Data Sheet

PCA9616
3-channel multipoint Fast-mode Plus differential I2C-bus
buffer with hot-swap logic
Rev. 2 — 10 March 2014
Product data sheet
1. General description
The PCA9616 is a Fast-mode Plus (Fm+) SMBus/I2C-bus buffer that extends the normal
single-ended SMBus/I2C-bus through electrically noisy environments using a differential
SMBus/I2C-bus (dI2C) physical layer, which is transparent to the SMBus/I2C-bus protocol
layer. It consists of three single-ended to differential driver channels for the SCL (serial
clock), SDA (serial data), and a third channel useful for INT or other signaling.
Remark: If the third channel is not used, the INT pin (pin 7 of the TSSOP16 package)
should not be left disconnected or ‘floating’ (it may generate incorrect bus signals due to
system noise entering this high-impedance node). Tie it to VSS.
The use of differential transmission lines between identical dI2C bus buffers removes
electrical noise and common-mode offsets that are present when signal lines must pass
between different voltage domains, are bundled with hostile signals, or run adjacent to
electrical noise sources, such as high energy power supplies and electric motors.
The SMBus/I2C-bus was conceived as a simple slow speed digital link for short runs,
typically on a single PCB or between adjacent PCBs with a common ground connection.
Applications that extend the bus length or run long cables require careful design to
preserve noise margin and reject interference.
The dI2C-bus buffers were designed to solve these problems and are ideally suited for
rugged high noise environments and/or longer cable applications, allow multiple slaves,
and operate at bus speeds up to 1 MHz clock rate. Cables can be extended to at least
three meters (3 m), or longer cable runs at lower clock speeds. The dI2C-bus buffers are
compatible with existing SMBus/I2C-bus devices and can drive Standard, Fast-mode, and
Fast-mode Plus devices on the single-ended side.
Signal direction is automatic, and requires no external control. To prevent bus latch up,
the standard SMBus/I2C-bus side of the bus buffer, the PCA9616 employs static offset,
care should be taken when connecting these to other SMBus/I2C-bus buffers that may not
operate with offset.
This device is a bridge between the normal 2-wire single-ended wired-OR SMBus/I2C-bus
and the 4-wire dI2C-bus.
Additional circuitry allows the PCA9616 to be used for ‘hot swap’ applications, where
systems are always on, but require insertion or removal of modules or cards without
disruption to existing signals.
The PCA9616 has two supply voltages, VDD(A) and VDD(B). VDD(A), the card side supply,
only serves as a reference and ranges from 0.8 V to 5.5 V. VDD(B), the line side supply,
serves as the majority supply for circuitry and ranges from 3.0 V to 5.5 V.
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
single-ended
I2C-bus
VDD(A)1
VDD(B)
VDD(B)
dI2C-bus
(differential I2C-bus,
1 of 3 lines shown)
VDD(B)
VDD(B)
VDD(A)2
SCL
SCL
SDA
PCA9616
INT
twisted-pair cable
PCA9616
SDA
INT
PIDET
PIDET
READY
READY
EN
EN
GND1
Fig 1.
single-ended
I2C-bus
GND2
aaa-009537
SMBus/I2C-bus translation to dI2C-bus and back to SMBus/I2C-bus
2. Features and benefits
 New dI2C-bus buffers offer improved resistance to system noise and ground offset
up to 1⁄2 of supply voltage
 Hot swap (allows insertion or removal of modules or card without disruption to bus
data)
 READY signal (PCA9616 output) indicates device is ready from a cold start
 EN signal (PCA9616 input) controls PCA9616 hot swap sequence
 Bus idle detect (PCA9616 internal function) waits for a bus idle condition before
connection is made
 3 channel dI2C (differential I2C-bus) to Fm+ single-ended buffer operating up to 1 MHz
with 30 mA SDA/SCL > 2.2 V, or 3 mA SDA/SCL < 2.4 V
 Compatible with I2C-bus Standard/Fast-mode and SMBus, Fast-mode Plus up to
1 MHz
 Active HIGH (internal pull-up resistor) Enable disables the device to high-impedance
state
 Single-ended I2C-bus on card side up to 540 pF >2.2 V and 400 pF <2.4 V
 Differential I2C-bus on cable side supporting multi-drop bus
 Maximum cable length: 3 m (approximately 10 feet) (longer at lower frequency)
 dI2C output: 1.5 V differential output with nominal terminals
 Differential line impedance (user defined): 100  nominal suggested
 Receive input sensitivity: 200 mV
 Hysteresis: 30 mV typical
 Input impedance: high-impedance (200 k typical)
 Receive input voltage range: 0.5 V to +5.5 V
 Lock-up free operation
 Supports arbitration and clock stretching across the dI2C-bus buffers
 Powered-off and powering-up high-impedance I2C-bus pins
 Operating supply voltage (VDD(A)) range of 0.8 V to 5.5 V with single-ended side 5.5 V
tolerant
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
2 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
 Differential I2C-bus operating supply voltage (VDD(B)) range of 3.0 V to 5.5 V with
5.5 V tolerant. Best operation is at 5 V.
 ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per
JESD22-C101
 Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
 Package offering: TSSOP16
3. Applications
 Any application with multiple power supplies and the potential for ground offsets up to
2.5 V
 Any application that requires long I2C-bus runs in electrically noisy environments
 Monitor remote temperature/leak detectors in harsh environment with interrupt back to
master
 Control of power supplies in high noise environment
 Transmission of I2C-bus between equipment cabinets
 Commercial lighting and industrial heating/cooling control
4. Ordering information
Table 1.
Ordering information
Type number
Topside
marking
Package
Name
Description
Version
PCA9616PW
PCA9616
TSSOP16
plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
SOT403-1
4.1 Ordering options
Table 2.
Ordering options
Type number
Orderable part
number
Package
Packing method
Minimum
order quantity
Temperature range
PCA9616PW
PCA9616PW,118
TSSOP16
Reel 13” Q1/T1
*standard mark SMD
2500
Tamb = 40 C to +85 C
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
3 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
5. Block diagram
PCA9616
connect
connect
DSCLP
SCL
DSCLM
DSDAP
SDA
DSDAM
VDD(A)
EN
READY
I2C-BUS
HOT SWAP LOGIC
connect
en
VDD(A)
VDD(B)
POWER-ON RESET,
PLUG-IN DETECTION
AND DEBOUNCING
PIDET
VDDA_SEL
DINTP
INT
DINTM
VSS
connect
connect
002aah589
Fig 2.
Block diagram (level 0)
DSCLP, DSDAP, DINTP
VDD
DSCLM, DSDAM, DINTM
002aag405
Fig 3.
PCA9616
Product data sheet
Differential output driver simplified circuit
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
4 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
6. Pinning information
6.1 Pinning
VDD(A)
1
16 VDD(B)
SDA
2
15 DSDAM
EN
3
14 DSDAP
SCL
4
PIDET
5
READY
6
11 DINTM
INT
7
10 DINTP
VSS
8
PCA9616PW
13 DSCLP
12 DSCLM
9
VDDA_SEL
002aah588
Fig 4.
Pin configuration for TSSOP16
6.2 Pin description
Table 3.
PCA9616
Product data sheet
Pin description
Symbol
Pin
Description
VDD(A)
1
I2C-bus side power supply (0.8 V to 5.5 V)
SDA
2
card side open-drain serial data input/output
EN
3
enable input (active HIGH); internal pull-up resistor to VDD(A)
SCL
4
card side open-drain serial clock input/output
PIDET
5
plug-in detection, open-drain output LOW to indicate that all hot-swap pins
have been steady and reliably plugged into the backplane
READY
6
open-drain output that goes HIGH when SDA and SCL are disconnected
from DSDA and DSCL, and pulls LOW when two sides are connected
INT
7
card side open-drain interrupt input/output
VSS
8
ground supply voltage (0 V)
VDDA_SEL
9
VDD(A) supply pin option input. Floating automatically selects threshold
based on VDD(A) magnitude. Recommend to be HIGH when VDD(A) > 2.2 V
and be LOW when VDD(A) < 2.4 V through a resistor.
DINTP
10
line side differential open-drain interrupt plus input/output
DINTM
11
line side differential open-drain interrupt minus input/output
DSCLM
12
line side differential open-drain clock minus input/output
DSCLP
13
line side differential open-drain clock plus input/output
DSDAP
14
line side differential open-drain data plus input/output
DSDAM
15
line side differential open-drain data minus input/output
VDD(B)
16
differential side power supply (3.0 V to 5.5 V)
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
5 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
7. Functional description
Refer to Figure 2.
The PCA9616 is used at each node of the dI2C-bus signal path, to provide conversion
from the dI2C-bus signal format to conventional I2C-bus/SMBus, allowing the connection
of existing I2C-bus/SMBus devices as slaves or the bus master. Because the signal
voltages on the I2C-bus/SMBus bus side may be different from the dI2C-bus side, there
are two power supply pins and a common ground. Static offset is employed by the
I2C-bus/SMBus side to prevent bus latch up. Signal direction is determined by the
I2C-bus/SMBus bus protocol, and does not require a direction signal, as these bus buffers
automatically set signal flow direction. An enable pin (EN) is provided to disable the bus
buffer, and is useful for fault finding, power-up sequencing, or reconfiguration of a large
bus system by isolating sections not needed at all times.
Construction of the differential transmission line is not device dependent. PCB traces,
open wiring, twisted pair cables or a combination of these may be used. Twisted pair
cables offer the best performance. A typical twisted pair transmission line cable has a
characteristic impedance of ‘about 100 ’ and must be terminated at both ends in 100 
to prevent unwanted signal reflections. Multiple nodes (each using a dI2C-bus buffer) may
be connected at any point along this transmission line, however, the stub length will
degrade the bus performance, and should therefore be minimized.
7.1 I2C-bus/SMBus side
The I2C-bus/SMBus side of the PCA9616 differential bus buffer is connected to other
I2C-bus/SMBus devices and requires pull-up resistors on each of the SCL and SDA
signals. The value of the resistor should be chosen based on the bus capacitance and
desired data speed, being careful not to overload the driver current rating of 3 mA for
Standard and Fast modes, 30 mA for Fast-mode Plus (Fm+). Note that at lower supply
voltages the driver will not deliver the higher current (see Table 5 “Static characteristics”).
The I2C-bus/SMBus side of the PCA9616 is powered from the VDD(A) supply pin.
7.2 dI2C-bus side differential pair
In previous I2C-bus/SMBus designs the nodes (Master and one or more Slaves) are
connected by wired-OR in combination with a single pull-up resistor. This simple
arrangement is not suited for long distances more than one meter (1 m) or about
three feet (3 ft), due to ringing and reflections on the un-terminated bus. The use of a
transmission line with correct termination eliminates this problem, and is further improved
by differential signaling used in the dI2C-bus scheme. Each node acts as both a driver and
a receiver to allow bidirectional signal flow, but not at the same time. Switching from
transmit to receive is done automatically. The dI2C-bus side of the PCA9616 is powered
from the VDD(B) supply pin.
The dI2C-bus is also biased to an idle state (D+ more positive than D) to be compatible
with the I2C-bus/SMBus wired-OR scheme, when not transmitting traffic (data). This
allows every node to receive broadcast messages from the Master, and return ACK/NACK
and data in response. Biasing is done with additional resistors, connected to VDD(B) and
VSS (the local ground), as shown in Figure 5. The transmission line is terminated in the
characteristic impedance of the cable, typically 100 . This is the value defined by three
resistors, the other two resistors providing the idle condition bias to the twisted pair.
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
6 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
DxxxP
DxxxP
DxxxM
DxxxM
twisted-pair cable
aaa-011061
Fig 5.
dI2C-bus terminations
7.2.1 Noise rejection
Impulse noise coupled into the I2C-bus/SMBus signals can prevent the I2C-bus/SMBus
bus from operating reliably. The hostile signals may appear on the SCL line, SDA line, or
both. Impulse noise may also enter the common ground connection, or be caused by
current in the ground path caused by DC power supplies, or other signals sharing the
common ground return path. This problem is removed by using a differential transmission
line, in place of the I2C-bus/SMBus signal path. The dI2C-bus receiver (at each dI2C-bus
node) subtracts the signals on the two differential lines (D+ and D), and eliminates any
common-mode noise that is coupled into the dI2C-bus. The receiver amplifies the signals
which are also attenuated by the bulk resistance of the transmission line cable
connection, and does not rely on a common ground connection at each node.
7.2.2 Rejection of ground offset voltage
Hostile signals interfere with the I2C-bus/SMBus bus through the common ground
connection between each node. Current in this ground path will cause an offset that may
cause false data or push the I2C-bus/SMBus signals outside of an acceptable range.
Unwanted ground offset can be caused by heavy DC current in the ground path, or
injection of ground current from AC signals, either of which may show up as false signals.
Because the dI2C-bus node’s receiver responds only to the difference between the two
dI2C-bus transmission lines, common-mode signals are ignored. There is no need to have
a ground connection between each of the nodes, which may be powered locally. Nodes
may also be powered by extra conductors (for VDD and ground) run with the dI2C-bus
signals. Voltage offsets caused by DC current in these additional wires will be ignored by
the dI2C-bus receiver, which subtracts the two differential signals (D+ and D).
7.2.3 Interrupt channel
The PCA9616 has a third channel identical to the SCL or SDA channel that can be used
as a side band for interrupt or reset.
If unused, the INT pin should be held LOW and the DINTM and DINTP are left ‘not
connected’.
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
7 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
7.3 EN pin
Enable input to connect the device into bus. When this pin is LOW, the device will never
connect to the bus, and disconnect the SCL/SDA from differential SCL/SDA, and READY
pin set HIGH. When EN is driven HIGH, and VDD(A) and VDD(B) are stable and dI2C-bus
side are with appropriate loads (indicated by PIDET goes LOW), the EN pin connects
SDA/SCL to differential SDA/SCL after a stop bit or bus idle has been detected on
differential line bus. EN pin should never change state during an I2C-bus/SMBus
operation because disabling during a bus operation will hang the bus and enabling part
way through a bus cycle could confuse the I2C-bus/SMBus parts being enabled. The EN
pin should only change state when the global bus and the buffer port are in an idle state to
prevent system failures.
7.4 PIDET pin
Plug-in status output. This open-drain N-channel MOSFET output pulls LOW when the
hot-swapped pins (differential SDA and SCL) have been steady and reliably plugged into
the bus when VDD(A) and VDD(B) are powered. Connect a pull-up resistor, typically 10 k,
from this pin to VDD(A). Leave open or tie to VSS if unused.
7.5 READY pin
Connection ready status output. This open-drain N-channel MOSFET output goes HIGH
when the input and output sides are disconnected. READY is pulled LOW when EN is
HIGH, PIDET is LOW, and a connection has been established between the input and
differential output. Connect a pull-up resistor, typically 10 k, from this pin to VDD(A).
Leave open or tie to VSS if unused.
7.6 VDDA_SEL pin
Enable input to select VDD(A) range. Tie to VDD(B) if VDD(A) is greater than 2.2 V and
constant VOL on SCL/SDA (0.52 V) is desired, and tie to VSS if VDD(A) is less than 2.4 V
and the ratio VOL (0.2  VDD(A)) is desired. Or leave open to let the device automatically
switch based on VDD(A) magnitude.
7.7 Hot swap and power-on reset
During a power-on sequence, an initialization circuit holds the PCA9616 in a disconnected
state, meaning all outputs — SDA, SCL and the differential pins DSCLP/DSCLM and
DSDAP/DSDAM — are in a high-impedance state. As the power supply rises (either
power-up or live insertion), the initialization circuit enters a state where the internal
references are stabilized and an internal timer is triggered. After 1 ms, power is applied to
the rest of the circuitry and the PCA9616 detects the status on the differential
DSCLP/DSCLM and DSDAP/DSDAM lines. When the differential lines are detected as
connected to a bus with valid termination, that is, both DSCLM/DSDAM < 0.9  VDD(B) and
DSCLP/DSDAP > 0.1  VDD(B), another timer is triggered. At the end of 10 ms, hot-swap
logic (Figure 2) is enabled and the EN pin can detect a Stop Bit and Bus Idle condition.
However, there is still no connection between SDA and DSDAP/DSDAM or between SCL
and DSCLP/DSCLM. A successful EN pin sequence must occur for actual connection.
When the EN pin is set HIGH and the DSDAP and DSCLP pins have been HIGH for the
bus idle time or when both the SCL and SDA pins are HIGH and a STOP condition has
been seen on the differential bus (DSDAP/DSDAM and DSCLP/DSCLM pins), a
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
8 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
connection is established between the differential and the single-ended buses. Whenever
disconnected status is detected or the device is un-powered, the PCA9616 will disconnect
the single-ended to differential buses, and the hot swap sequence will repeat again before
the PCA9616 connects SDA to DSDAP/DSDAM and SCL to DSCLP/DSCLM.
Remark: Start-up process is the same for both PCA9616PW and PCA9615DP, except
that PIDET and READY signals are only available in 16-pin package.
VDD(A), VDD(B)
~11 ms
ten for power-on
and stabilization
~1 ms
pwon
~10 ms
plug-in debouncing time
PIDET
only when EN goes HIGH
and PIDET inputs go LOW
will the bus idle/stop detector
start functioning
EN
SCL/SDA,
DSCL/DSDA
tidle
tstop
READY = pwon && PIDET && EN &&
(set by bus idle or stop)
002aah591
For PCA9616, the READY time is at least 11 ms (1 ms for power ready, 10 ms for
plug-in debouncing delay), which means the device can only be in operation after 11 ms
with VDD(A), VDD(B) ON and a bus idle/stop detected.
Fig 6.
PCA9616
Product data sheet
Hot swap related timings
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
9 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
8. Application design-in information
8.1 I2C-bus
As with the standard I2C-bus system, pull-up resistors are required to provide the logic
HIGH levels on the single-ended buffered bus (standard open-drain configuration of the
I2C-bus). The size of these pull-up resistors depends on the system. The device is
designed to work with Standard-mode, Fast-mode and Fast-mode Plus I2C-bus devices in
addition to SMBus devices. Standard-mode and Fast-mode I2C-bus and SMBus devices
only specify 3 mA output drive; this limits the termination current to 3 mA in a generic
I2C-bus system where Standard-mode devices and multiple masters are possible.
When only Fast-mode Plus devices are used, then higher termination currents can be
used due to their 30 mA sink capability. The sink capability varies from 3 mA at 0.8 V to
30 mA at 5.5 V with the cut-off between 30 mA and 3 mA at 2.3 V.
8.2 Differential I2C-bus application
See Figure 7 through Figure 9.
The simple application (Figure 7) shows an existing SMBus/I2C-bus being extended over
a section of dI2C-bus transmission line, containing a dedicated twisted pair for SCL and
SDA. At one end of the transmission line a resistor network (R1-R2-R1) terminates the
twisted pair cable and biases D+ positive with respect to D. An identical resistor network
at the other end of the transmission line terminates the twisted pair cable. DC power for
each end of the transmission line and the VDD(B) of each PCA9616 bus buffer can be from
separate and isolated power supplies, or use the same supply and ground run in separate
wires along the same path as the dI2C-bus signal twisted pairs.
Telecom category 5 (‘CAT 5’) data cable is well suited for this task, but loose wires may
also be used, with a reduction in performance. Assuming VDD(B) is 5 V, and using CAT 5
cable, R2 is 120 , and R1 is 600 . The parallel combination yields a termination of
100  at each end of the twisted pairs.
Either side of the dI2C-bus buffer pair is connected to standard SMBus/I2C buses, which
require their own pull-up resistors to VDD(A) of the PCA9616 bus buffers. VDD(A) and VDD(B)
can be the same supply, however, making them different voltages enables the PCA9616
bus buffers to level translate between the SMBus/I2C-bus and dI2C-bus sections of the
bus, or to have different supply voltages and level translate at either end of the dI2C-bus
and SMBus/I2C-bus system.
For example, the left-hand bus master (and local slave) may operate on a 3.3 V supply
and SMBus/I2C-bus while the dI2C-bus transmission lines are at 5 V, and the right-hand
slave is operated from a different 3.3 V supply and SMBus/I2C-bus, or even a different bus
voltage other than 3.3 V.
Depending upon the timing from the system master, clock toggle rates can vary from
10 kHz for the SMBus (or less for SMBus/I2C-bus protocol) up to 100 kHz (Standard
mode), 400 kHz (Fast mode), or up to 1 MHz (Fast-mode Plus).
The bus path is bidirectional. Assume that the left side SMBus/I2C-bus becomes active. A
START condition (SDA goes LOW while SDA is HIGH) is sent. This upsets the idle
condition on the dI2C-bus section of the bus, because D+ was more positive than D and
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
10 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
now they are reversed. The right side bus buffer sees the differential lines change polarity
and in turn pulls SDA LOW on the SMBus/I2C-bus side of the bus buffer, transmitting the
START condition to the slave on that section of the SMBus/I2C-bus.
If the data clocked out by the left side master contains a valid address of the right side
slave, that slave responds by pulling SDA LOW on the ninth clock. This condition is
transmitted across the dI2C-bus section that has now changed flow direction, and
received by the left side bus buffer (again, D+ was more positive than D and now they
are reversed).
This sequence continues until the master sends the STOP condition (SCL HIGH while
SDA goes HIGH), placing the active slave (on the right side) back to idle. When idle, the
normal SMBus/I2C-bus (both left and right sections) are pulled up by their respective
pull-ups. In turn, the dI2C-bus section of the bus rests with D+ more positive than D.
The idle condition can be changed by any node on either SMBus/I2C-bus section or an
additional dI2C-bus node, if present, on the dI2C-bus section of the system. This allows
the existing SMBus/I2C-bus protocol to operate transparently over a mix of SMBus/I2C
and dI2C bus segments.
Due to the SMBus/I2C-bus handshake protocol (ACK/NACK on the ninth clock pulse), the
direction of the SMBus/I2C-bus is reversed often. The ‘time of flight’ for the signals to pass
through each bus buffer and for the target slave to respond defines the maximum speed of
the bus, regardless of how fast the clock toggles. The dI2C-bus section of the bus requires
two additional PCA9616 bus buffers, further delaying the SMBus/I2C-bus traffic. If the
dI2C-bus transmission line section is made longer, the bus will operate much slower,
regardless of the clock toggle speed.
It is not necessary to have a ground connection between each end of the dI2C section of
the bus. The dI2C-bus receiver responds to reversal of the polarity of the D+ and D
signals, and ignores the common-mode voltage that may be present.
Ideally, the common-mode voltage is the same at each end of the twisted pairs, and no
current flows along the twisted pair when the bus is idle, because the D+ and D dI2C-bus
drivers are both high-impedance, the bus is biased by R1-R2-R1 at each end. If the
common-mode voltage is not 0 V, current will flow along the twisted pair, returning through
the common ground or common power supply connection if present.
If both ends of the twisted pair are powered by the same VDD(B) supply and one end is
remote, there will be a common-mode offset between them. This is ignored by the
dI2C-bus receivers, which only respond to the difference between D+ and D.
However, a large common-mode offset voltage will force the D+ and D signals out of the
range of the receiver, and data will be lost. The PCA9616 bus buffers use standard ESD
protection networks to protect the external pins, and therefore should not be biased above
or below the VDD(B) and VSS pins respectively. This limits the common-mode range to
approximately 0.5  VDD(B).
DC resistance of the transmission line will attenuate the signals, more so over longer
distances. The loss of signal amplitude is made up by the gain of the dI2C-bus receiver.
There is a limit to how long the dI2C-bus section can be made, as it is necessary for the
driver to overcome the bias on the transmission line, in order to signal a polarity change
(D+ and D reversal) at the receiver end.
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
11 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
VDD(B)1
VDD(B)2
(optional)
R1
R1
R2
R2
R1
R1
DSCLP
DSCLM
SDA
MASTER
VDD(A)2
R1
R1
R2
R2
R1
R1
DSDAP
PCA9616
SCL
PCA9616
VDD(A)1
DSDAM
SLAVE
SCL
SDA
SLAVE
R1
R1
R2
R2
MASTER
DINTP
INT
INT
DINTM
R1
R1
(optional)
VSS1
CARD
VSS2
CARD
002aag411
Remark: For clarity, DSDAP and DSDAM are flipped from actual device pinout.
Fig 7.
Typical application for PCA9616
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
12 of 32
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx
NXP Semiconductors
PCA9616
Product data sheet
termination
VDD(B)
VDD(B)
VDD(B)
R1
R1
R2
R2
DSCLP
DSCLM
VDD(A)
MASTER
VDD(A)
VDD(B)
R1
R1
R2
R2
R1
R1
DSDAP
DSDAM
SLAVE
VDD(B)
R1
R1
R2
R2
SLAVE
MASTER
DINTP
INT
DINTM
R1
R1
VSS
optional
VDD
CARD
CARD
VSS
VDD
VSS
VDD(A)
VDD(A)
PCA9616
MASTER
CARD
SLAVE
MASTER
CARD
002aag412
Remark: For clarity, DSDAP and DSDAM are flipped from actual device pinout.
Fig 8.
PCA9616 application diagram; VDD and VSS are routed through the cable
PCA9616
13 of 32
© NXP Semiconductors N.V. 2014. All rights reserved.
SLAVE
PCA9616
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
Rev. 2 — 10 March 2014
All information provided in this document is subject to legal disclaimers.
SDA
R1
PCA9616
SCL
PCA9616
R1
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx
NXP Semiconductors
PCA9616
Product data sheet
VDD(B)
VDD(A)
VDD(A)
PCA9616
SLAVE
SLAVE
MASTER
CARD
MASTER
CARD
VDD(B)
DSCLP
VDD(A)
DSCLM
SDA
MASTER
SLAVE
PCA9616
SCL
DSDAP
DSDAM
DINTP
INT
DINTM
VDD(A)
CARD
VSS
VDD(A)
VDD(A)
PCA9616
PCA9616
SLAVE
SLAVE
SLAVE
MASTER
CARD
CARD
MASTER
MASTER
CARD
002aag413
Remark: For clarity, DSDAP and DSDAM are flipped from actual device pinout.
Fig 9.
PCA9616 application diagram; VDD and VSS are not routed through the cable
PCA9616
14 of 32
© NXP Semiconductors N.V. 2014. All rights reserved.
PCA9616
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
Rev. 2 — 10 March 2014
All information provided in this document is subject to legal disclaimers.
PCA9616
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
Backplane connector
3.3 V
5V
VDD(A)
VDD(B)
PIDET
EN
READY
DSCL
SCL
DSDA
SDA
MASTER
VSS
Differential terminations
are always on backplane.
Card with master.
The master can issue the EN after PIDET goes LOW.
VDD(A)
VDD(B)
PIDET
EN
READY
DSCL
SCL
DSDA
SDA
SLAVE
VSS
Card without master.
002aah590
Fig 10. Hot swap application
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
15 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
aaa-009538
Fig 11. Differential bus waveform
9th clock pulse
acknowledge
SCL
VOL of PCA9616 (from slave)
SDA
002aah616
VOL of master
Fig 12. Single-ended bus waveform (master side of bus)
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
16 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
9. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VDD(B)
supply voltage port B
differential bus; 3.0 V to 5.5 V
0.5
+6
V
VDD(A)
supply voltage port A
single-ended bus; 0.8 V to 5.5 V
VO(dif)
differential output voltage
I2C-bus
A side, or enable (EN)
0.5
+6
V
0.5
+6
V
0.5
+6
V
-
80
mA
Vbus
bus voltage
voltage on
II/O
input/output current
SDA, SCL, INT, Dxxxx pins
-
20
mA
IDD(B)
supply current port B
-
160
mA
Ptot
total power dissipation
-
100
mW
Tstg
storage temperature
55
+125
C
Tamb
ambient temperature
Tj
junction temperature
PIDET, READY pins
PCA9616
Product data sheet
operating in free air
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
40
+85
C
-
125
C
© NXP Semiconductors N.V. 2014. All rights reserved.
17 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
10. Static characteristics
Table 5.
Static characteristics
VDD(B) = 3.0 V to 5.5 V; VSS = 0 V; Tamb = 40 C to +85 C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supplies
VDD(B)
supply voltage port B
differential bus
VDD(A)
supply voltage port A
single-ended bus
[1]
IDD(VDDA) supply current on
pin VDD(A)
3.0
-
5.5
V
0.8
-
5.5
V
-
-
16
A
IDDH(B)
port B HIGH-level supply
current
3-channel; both channels HIGH;
VDD(B) = 5.5 V;
INT = SDAn = SCLn = VDD(A) = 5.5 V
-
1.2
2.0
mA
IDDL(B)
port B LOW-level supply
current
3-channel; both channels LOW;
VDD(B) = 5.5 V; SDA and SCL = VSS;
differential I/Os open
-
1.2
2.0
mA
driving termination; 3 channels
-
95
136
mA
Input and output SDA and SCL and INT
VIH
HIGH-level input voltage
VIL
LOW-level input voltage
0.7VDD(A) -
5.5
V
VDDA_SEL = 1 and VDD(A) > 2.2 V
0.5
-
+0.4
V
VDDA_SEL = 0 and VDD(A) < 2.4 V
0.5
-
+0.1VDD(A) V
II = 18 mA
1.5
-
0
V
VIK
input clamping voltage
ILI
input leakage current
VI = VDD(A)
-
-
2
A
IIL
LOW-level input current
VI = 0.2 V for VDD(A) > 1.8 V;
VI = 0.1 V for VDD(A) < 1.8 V
-
-
12
A
VOL
LOW-level output voltage
IOL = 200 A or 30 mA
(VDD(A) > 2.2 V and VDDA_SEL = 1)
0.47
0.52
0.6
V
IOL = 200 A or 3 mA
(VDD(A) < 2.4 V and VDDA_SEL = 0)
-
0.2VDD(A)
0.3VDD(A)
IOL = 200 A or 30 mA
(VDD(A) > 2.2 V and
VDDA_SEL = 1)
-
-
90
IOL = 200 A or 3 mA
(VDD(A) < 2.4 V and
VDDA_SEL = 0)
-
0.05VDD(A) 0.1VDD(A)
VOLVIL
difference between
LOW-level output and
LOW-level input voltage
guaranteed by design
mV
ILOH
HIGH-level output leakage VO = VDD(A)
current
-
-
±2
A
Cio
input/output capacitance
-
7
10
pF
PCA9616
Product data sheet
VI = VDD(A) or 0 V;
disabled or VDD(A) = 0 V
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
18 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
Table 5.
Static characteristics …continued
VDD(B) = 3.0 V to 5.5 V; VSS = 0 V; Tamb = 40 C to +85 C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
0
-
VDD(B)
V
DSCLP, DSCLM, DSDAP, DSDAM
pins
-
-
40
A
DINTP, DINTM pins
-
-
1
A
DSCLP, DSCLM, DSDAP, DSDAM
pins
-
-
40
A
DINTP, DINTM pins
-
-
1
A
Input and output DSDAP/DSDAM and DSCLP/DSCLM and DINTP/DINTM
Vcm
common-mode voltage
ILI
input leakage current
LOW-level input current
IIL
VI = VDD(B)
VI = 0.2 V
RPU
pull-up resistance
internal pull-up resistor on DSCLM
and DSDAM connected to VDD(B) rail
-
200
-
k
Rpd
pull-down resistance
internal pull-down resistor on DSCLP
and DSDAP connected to VSS rail
-
200
-
k
Vth(dif)
differential receiver
threshold voltage
0 V  Vcm  VDD(B)
200
-
+200
mV
VI(hys)
hysteresis of input voltage receiver; 0 V  Vcm  VDD(B)
-
30
-
mV
Vo(dif)(p-p) peak-to-peak differential
output voltage
input/output capacitance
Cio
single-ended input LOW
no load
VDD(B)
-
-
V
RL = 54  at VDD(B) = 5 V
5.0
1.5
1.0
V
-
7
10
pF
V
VI = VDD(B) or 0 V;
disabled or VDD(B) = 0 V
Input EN
VIH
HIGH-level input voltage
0.7VDD(A) -
5.5
VIL
LOW-level input voltage
0.5
-
+0.3VDD(A) V
ILI
input leakage current
1
-
+1
A
IIL(EN)
LOW-level input current on VI = 0.2 V, EN; VDD(A) = 5.5 V
pin EN
-
20
54
A
Ci
input capacitance
VI = VDD(A)
-
6
10
pF
RPU
pull-up resistance
internal pull-up resistor connected to
VDD(A) rail
-
300
-
k
VI = VDD(B)
Output PIDET and READY
VOL
LOW-level output voltage
IOL = 3 mA; VDD(B) = 3.0 V
0.5
-
+0.4
V
IL
leakage current
READY and PIDET OFF;
VDD(A) = VPIDET/VREADY = 5.5 V
-
-
2
A
V
Input VDDA_SEL
VIH
HIGH-level input voltage
0.7VDD(B) -
5.5
VIL
LOW-level input voltage
0.5
-
+0.3VDD(B) V
ILI
input leakage current
-
-
1
[1]
VDD(B) = 5.5 V;
VI = 0 V for VDD(A) = 1.8 V, or
VI = VDD(B) for VDD(A) = 5.5 V
A
Single-ended bus supply voltage. Recommend VDDA_SEL = 0 for VDD(A) = 0.8 V to 2.4 V, and VDDA_SEL = 1 for VDD(A) = 2.2 V to
5.5 V. If left floating, the best selection is automatically picked based on magnitude of VDD(A).
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
19 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
11. Dynamic characteristics
Table 6.
Dynamic characteristics
VDD = 2.7 V to 5.5 V; VSS = 0 V; Tamb = 40 C to +85 C; unless otherwise specified.[1][2]
Symbol
Parameter
Conditions
tPLH
LOW to HIGH propagation delay
tPLH2
LOW to HIGH propagation delay 2 single-ended side to differential side;
Figure 15
tPHL
HIGH to LOW propagation delay
single-ended side to differential side;
Figure 13
SRr
rising slew rate
differential side; Figure 13
falling slew rate
SRf
single-ended side to differential side;
Figure 15
[4]
[5]
Min
Typ[3]
Max
Unit
140
120
-
ns
-
-
100
ns
-
-
120
ns
-
-
1
V/ns
differential side; Figure 13
[5]
-
-
1
V/ns
-
-
150
ns
-
-
150
ns
-
-
0.1
V/ns
tPLH
LOW to HIGH propagation delay
differential side to single-ended side;
Figure 14
[6]
tPHL
HIGH to LOW propagation delay
differential side to single-ended side;
Figure 14
[6]
SRf
falling slew rate
single-ended side; Figure 14
[7]
tdis
disable time
EN LOW to disable
-
-
200
ns
tidle
idle time
READY active after bus idle
-
100
-
s
tstop
stop time
READY active after bus stop
-
-
1
s
tdeb(bus)
bus debounce time
5
-
15
ms
[1]
Times are specified with loads of 1.35 k pull-up resistance and 50 pF load capacitance on the A side, and 50  termination network
resistance and 50 pF load capacitance on the B side. Different load resistance and capacitance will alter the RC time constant, thereby
changing the propagation delay and transition times.
[2]
Pull-up voltages are VDD(A) on the A side and termination network on the B side.
[3]
Typical values were measured with VDD(A) = 3.3 V at Tamb = 25 C, unless otherwise noted.
[4]
The tPLH delay data from B side to A side is measured at 0 V differential on the B side to 0.5VDD(A) on the A side.
[5]
Typical value measured with VDD(A) = 3.3 V at Tamb = 25 C.
[6]
The proportional delay data from A side to B side is measured at 0.5VDD(A) on the A side to 0 V on the B side.
[7]
The enable pin (EN) should only change state when the global bus and the repeater port are in an idle state.
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
20 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
11.1 AC waveforms
VDD(A)
input
0.5VDD(A)
0.5VDD(A)
tPHL
tPLH
80 %
output
0V
20 %
0V
20 %
tTHL
input
0.1 V
80 %
0.3 V
differential
voltage
−2.5 V
0V
0V
tPHL
tPLH
80 %
output
0.5VDD(A) 0.5VDD(A)
20 %
20 %
tTLH
tTHL
002aag416
0.3 V
differential
voltage
−0.3 V
80 %
VDD(A)
tTLH
002aag417
VDD(A) = 3.0 V.
VDD(A) = 3.0 V.
SRf = 0.6  (Vhigh  Vlow) / tTHL
SRf = 0.6 ´ VDD(A) / tTHL
SRr = 0.6  (Vhigh  Vlow) / tTLH
Fig 13. Propagation delay and transition times;
single-ended side to differential side
Fig 14. Propagation delay and transition times;
differential side to single-ended side
tPLH
0.5VDD(A)
input
SDA, SCL
0.5 V
0.3 V
output
DSCLP/DSCLM,
DSDAP/DSDAM
0V
tPLH2
−2.5 V
002aag418
Fig 15. Propagation delay
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
21 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
12. Test information
VDD(B)
VDD(A)
VDD(B)
VDD(A)
I2C-BUS
LEVEL SHIFTER
PULSE
GENERATOR
VI
DUT
300 Ω
VO
P
M
60 Ω
DIFFERENTIAL
PROBE
RT
300 Ω
002aag419
RL = load resistor; 1.35 k on single-ended side.
RT = termination resistance should be equal to Zo of pulse generators.
Fig 16. Test circuit for differential outputs
VDD(A)
VDD(A)
VDD(B)
DIFFERENTIAL
RT
P
DUT
M
RL
VO
CL
002aag420
RL = load resistor; 1.35 k on single-ended side.
CL = load capacitance includes jig and probe capacitance; 50 pF.
RT = termination resistance should be equal to Zo of pulse generators.
Fig 17. Test circuit for open-drain output
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
22 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
13. Package outline
76623SODVWLFWKLQVKULQNVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP
'
627
(
$
;
F
\
+(
Y 0 $
=
4
$
SLQLQGH[
$
$
$
ș
/S
/
H
GHWDLO;
Z 0
ES
PP
VFDOH
',0(16,216PPDUHWKHRULJLQDOGLPHQVLRQV
81,7
$
PD[
$
$
$
ES
F
'
(
H
+(
/
/S
4
Y
Z
\
=
ș
PP
R
R
1RWHV
3ODVWLFRUPHWDOSURWUXVLRQVRIPPPD[LPXPSHUVLGHDUHQRWLQFOXGHG
3ODVWLFLQWHUOHDGSURWUXVLRQVRIPPPD[LPXPSHUVLGHDUHQRWLQFOXGHG
287/,1(
9(56,21
627
5()(5(1&(6
,(&
-('(&
-(,7$
(8523($1
352-(&7,21
,668('$7(
02
Fig 18. Package outline SOT403-1 (TSSOP16)
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
23 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
14. Soldering of SMD packages
This text provides a very brief insight into a complex technology. A more in-depth account
of soldering ICs can be found in Application Note AN10365 “Surface mount reflow
soldering description”.
14.1 Introduction to soldering
Soldering is one of the most common methods through which packages are attached to
Printed Circuit Boards (PCBs), to form electrical circuits. The soldered joint provides both
the mechanical and the electrical connection. There is no single soldering method that is
ideal for all IC packages. Wave soldering is often preferred when through-hole and
Surface Mount Devices (SMDs) are mixed on one printed wiring board; however, it is not
suitable for fine pitch SMDs. Reflow soldering is ideal for the small pitches and high
densities that come with increased miniaturization.
14.2 Wave and reflow soldering
Wave soldering is a joining technology in which the joints are made by solder coming from
a standing wave of liquid solder. The wave soldering process is suitable for the following:
• Through-hole components
• Leaded or leadless SMDs, which are glued to the surface of the printed circuit board
Not all SMDs can be wave soldered. Packages with solder balls, and some leadless
packages which have solder lands underneath the body, cannot be wave soldered. Also,
leaded SMDs with leads having a pitch smaller than ~0.6 mm cannot be wave soldered,
due to an increased probability of bridging.
The reflow soldering process involves applying solder paste to a board, followed by
component placement and exposure to a temperature profile. Leaded packages,
packages with solder balls, and leadless packages are all reflow solderable.
Key characteristics in both wave and reflow soldering are:
•
•
•
•
•
•
Board specifications, including the board finish, solder masks and vias
Package footprints, including solder thieves and orientation
The moisture sensitivity level of the packages
Package placement
Inspection and repair
Lead-free soldering versus SnPb soldering
14.3 Wave soldering
Key characteristics in wave soldering are:
• Process issues, such as application of adhesive and flux, clinching of leads, board
transport, the solder wave parameters, and the time during which components are
exposed to the wave
• Solder bath specifications, including temperature and impurities
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
24 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
14.4 Reflow soldering
Key characteristics in reflow soldering are:
• Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to
higher minimum peak temperatures (see Figure 19) than a SnPb process, thus
reducing the process window
• Solder paste printing issues including smearing, release, and adjusting the process
window for a mix of large and small components on one board
• Reflow temperature profile; this profile includes preheat, reflow (in which the board is
heated to the peak temperature) and cooling down. It is imperative that the peak
temperature is high enough for the solder to make reliable solder joints (a solder paste
characteristic). In addition, the peak temperature must be low enough that the
packages and/or boards are not damaged. The peak temperature of the package
depends on package thickness and volume and is classified in accordance with
Table 7 and 8
Table 7.
SnPb eutectic process (from J-STD-020D)
Package thickness (mm)
Package reflow temperature (C)
Volume (mm3)
< 350
 350
< 2.5
235
220
 2.5
220
220
Table 8.
Lead-free process (from J-STD-020D)
Package thickness (mm)
Package reflow temperature (C)
Volume (mm3)
< 350
350 to 2000
> 2000
< 1.6
260
260
260
1.6 to 2.5
260
250
245
> 2.5
250
245
245
Moisture sensitivity precautions, as indicated on the packing, must be respected at all
times.
Studies have shown that small packages reach higher temperatures during reflow
soldering, see Figure 19.
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
25 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
temperature
maximum peak temperature
= MSL limit, damage level
minimum peak temperature
= minimum soldering temperature
peak
temperature
time
001aac844
MSL: Moisture Sensitivity Level
Fig 19. Temperature profiles for large and small components
For further information on temperature profiles, refer to Application Note AN10365
“Surface mount reflow soldering description”.
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
26 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
15. Soldering: PCB footprints
)RRWSULQWLQIRUPDWLRQIRUUHIORZVROGHULQJRI76623SDFNDJH
627
+[
*[
3
+\
*\
%\
$\
&
'[
'
3
*HQHULFIRRWSULQWSDWWHUQ
5HIHUWRWKHSDFNDJHRXWOLQHGUDZLQJIRUDFWXDOOD\RXW
VROGHUODQG
RFFXSLHGDUHD
',0(16,216LQPP
3
3
$\
%\
&
'
'
*[
*\
+[
+\
VRWBIU
Fig 20. PCB footprint for SOT403-1 (TSSOP16); reflow soldering
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
27 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
16. Abbreviations
Table 9.
Abbreviations
Acronym
Description
CDM
Charged-Device Model
dI2C-bus
differential Inter-Integrated Circuit bus
ESD
ElectroStatic Discharge
HBM
Human Body Model
I2C-bus
Inter-Integrated Circuit bus
I/O
Input/Output
LED
Light Emitting Diode
SMBus
System Management Bus
17. Revision history
Table 10.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
PCA9616 v.2
20140310
Product data sheet
-
PCA9616 v.1
Modifications:
•
•
Inserted the word “multipoint” in descriptive title of this data sheet
Section 1 “General description”:
– added “Remark” paragraph
– eighth paragraph re-written
•
Figure 1 “SMBus/I2C-bus translation to dI2C-bus and back to SMBus/I2C-bus” updated: added EN,
PIDET and RESET pins
•
Section 2 “Features and benefits”:
– added (new) first bullet item
– seventh bullet item changed from “and Fast-mode Plus at 1 MHz” to “and SMBus, Fast-mode
Plus up to 1 MHz”
•
Section 2 “Features and benefits”, tenth bullet item:
– second sub-bullet changed from “3 V differential output (unloaded: ~5 V, loaded: ~1.5 V)”
to “1.5 V differential output with nominal terminals”
– sixth sub-bullet changed from “(1 M typical)” to “(200 k typical)”
•
•
•
Figure 2 “Block diagram (level 0)” updated (added transistor on signal PIDET)
Figure 3 “Differential output driver simplified circuit” updated (corrected transistor types)
Table 3 “Pin description”:
– updated description for VDD(A) (pin 1)
– updated description for EN (pin 3)
– description for VDDA_SEL (pin 9) changed from “Floating is not information of VDD(A) range.
Recommend to be HIGH when VDD(A) > 2.3 V and be LOW when VDD(A) < 2.3 V through a
resistor.” to “Floating automatically selects threshold based on VDD(A) magnitude. Recommend to
be HIGH when VDD(A) > 2.2 V and be LOW when VDD(A) < 2.4 V through a resistor.”
•
•
•
PCA9616
Product data sheet
Figure 5 “dI2C-bus terminations” corrected: from “DxxxN” to “DxxxM” (2 places)
Added (new) Section 7.2.3 “Interrupt channel”
Section 7.3 “EN pin”: first paragraph re-written
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
28 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
Table 10.
Revision history …continued
Document ID
Modifications:
(continued)
Release date
•
Data sheet status
Change notice
Supersedes
Section 8.2 “Differential I2C-bus application”:
– second paragraph, second sentence changed from “(R1, R2, R3)” to “(R1-R2-R1)”
– third paragraph, second sentence changed from “R1 and R3 are 600 ” to “and R1 is 600 ”
– 13th paragraph, first sentence changed from “R1, R2 and R3” to “R1-R2-R1”
– Figure 7 “Typical application for PCA9616”: corrected pin names; added ‘Remark’; “R3” changed
to “R1”; added dashed line to indicate optional connection
•
Figure 8 “PCA9616 application diagram; VDD and VSS are routed through the cable”:
corrected pin names; corrected resistor label from “R3” to “R1”; added ‘Remark’
•
Figure 9 “PCA9616 application diagram; VDD and VSS are not routed through the cable”:
corrected pin names; added ‘Remark’
•
Table 4 “Limiting values”:
– VDD(A): combined voltage ranges to one Condition
– deleted characteristic “IDD, supply current”
– added characteristic “II/O, input/output current”
•
Table 5 “Static characteristics”, sub-section “Supplies”:
– IDDH(B) Typ value changed from “0.9 mA” to “1.2 mA”
– IDDL(B) (condition ‘3-channel; both channels LOW; VDD(B) = 5.5 V; SDA and SCL = VSS;
differential I/Os open’), Typ value changed from “1.5 mA” to “1.2 mA”
– IDDL(B) (condition ‘3-channel; both channels LOW; VDD(B) = 5.5 V; SDA and SCL = VSS;
differential I/Os open’), Max value changed from “3.0 mA” to “2.0 mA”
– IDDL(B) (condition ‘driving termination; 3 channels’), Typ value changed from “105 mA” to “95 mA”
•
Table 5 “Static characteristics”, sub-section “Input and output SDA and SCL and INT”:
– deleted characteristic “CL, load capacitance”
– ILI Condition changed from “VI = 5.5 V” to “VI = VDD(A)”
– ILOH: Condition changed from “VO = 5.5 V” to “VO = VDD(A)”;
Max value changed from “2 A” to “2 A”
– Cio: merged Conditions; Max value changed from “-” to “10 pF”
•
Table 5 “Static characteristics”, sub-section “Input and output DSDAP/DSDAM and DSCLP/DSCLM
and DINTP/DINTM”:
– Vcm Max value changed from “5.5 V” to “VDD(B)”
– ILI: Condition changed from “VI = 5.5 V” to “VI = VDD(B)”
– IIL: Condition changed from “SDA, SCL; VI = 0.2 V”
to “VI = 0.2 V for VDD(A) > 1.8 V; VI = 0.1 V for VDD(A) < 1.8 V”
– Vth(dif): Condition changed from “0 V  Vcm  5.5 V” to “0 V  Vcm  VDD(B)”
– VI(hys): Condition changed from “receiver; 0 V  Vcm  5.5 V” to “receiver; 0 V  Vcm  VDD(B)”;
Min value changed from “<tbd>” to “-”; Typ value changed from “<tbd>” to “30 mV”;
Max value changed from “<tbd>” to “-”
– Cio, merged Conditions; Max value changed from “-” to “10 pF”
•
Table 5 “Static characteristics”, sub-section “Input EN”:
– IIL(EN) Typ value changed from “10 A” to “20 A”
– Cio: Max value changed from “-” to “10 pF”
PCA9616 v.1
PCA9616
Product data sheet
•
Table 5 “Static characteristics”, sub-section “Input VDDA_SEL”: ILI Conditions changed
from “VDD(B) = 5.5 V; VI = 0 V for VDD(A) < 1.8 V, or VI = VDD(B) for VDD(A) > 2.5 V”
to “VDD(B) = 5.5 V; VI = 0 V for VDD(A) = 1.8 V, or VI = VDD(B) for VDD(A) = 5.5 V”
•
Table 5 “Static characteristics”, Table note [1] re-written
20131002
Preliminary data sheet
-
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
29 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
18. Legal information
18.1 Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
18.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
18.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. NXP Semiconductors takes no
responsibility for the content in this document if provided by an information
source outside of NXP Semiconductors.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
PCA9616
Product data sheet
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors and its suppliers accept no liability for
inclusion and/or use of NXP Semiconductors products in such equipment or
applications and therefore such inclusion and/or use is at the customer’s own
risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — NXP Semiconductors
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nxp.com/profile/terms, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. NXP Semiconductors hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of NXP Semiconductors products by customer.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
30 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. NXP
Semiconductors accepts no liability for inclusion and/or use of
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without NXP Semiconductors’ warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies NXP Semiconductors for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond NXP Semiconductors’
standard warranty and NXP Semiconductors’ product specifications.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
I2C-bus — logo is a trademark of NXP Semiconductors N.V.
19. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
PCA9616
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 10 March 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
31 of 32
PCA9616
NXP Semiconductors
3-channel multipoint Fm+ dI2C-bus buffer with hot-swap logic
20. Contents
1
2
3
4
4.1
5
6
6.1
6.2
7
7.1
7.2
7.2.1
7.2.2
7.2.3
7.3
7.4
7.5
7.6
7.7
8
8.1
8.2
9
10
11
11.1
12
13
14
14.1
14.2
14.3
14.4
15
16
17
18
18.1
18.2
18.3
18.4
19
20
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 6
I2C-bus/SMBus side . . . . . . . . . . . . . . . . . . . . . 6
dI2C-bus side differential pair . . . . . . . . . . . . . . 6
Noise rejection . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rejection of ground offset voltage . . . . . . . . . . 7
Interrupt channel. . . . . . . . . . . . . . . . . . . . . . . . 7
EN pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PIDET pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
READY pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
VDDA_SEL pin . . . . . . . . . . . . . . . . . . . . . . . . . 8
Hot swap and power-on reset. . . . . . . . . . . . . . 8
Application design-in information . . . . . . . . . 10
I2C-bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Differential I2C-bus application . . . . . . . . . . . . 10
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 17
Static characteristics. . . . . . . . . . . . . . . . . . . . 18
Dynamic characteristics . . . . . . . . . . . . . . . . . 20
AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . 21
Test information . . . . . . . . . . . . . . . . . . . . . . . . 22
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 23
Soldering of SMD packages . . . . . . . . . . . . . . 24
Introduction to soldering . . . . . . . . . . . . . . . . . 24
Wave and reflow soldering . . . . . . . . . . . . . . . 24
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 24
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 25
Soldering: PCB footprints. . . . . . . . . . . . . . . . 27
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 28
Legal information. . . . . . . . . . . . . . . . . . . . . . . 30
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 30
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Contact information. . . . . . . . . . . . . . . . . . . . . 31
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP Semiconductors N.V. 2014.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 10 March 2014
Document identifier: PCA9616
Similar pages