ONSEMI NCV7342D10R2G

NCV7342
High Speed Low Power CAN
Transceiver
Description
The NCV7342 CAN transceiver is the interface between a
controller area network (CAN) protocol controller and the physical
bus and may be used in both 12 V and 24 V systems. The transceiver
provides differential transmit capability to the bus and differential
receive capability to the CAN controller.
The NCV7342 is an addition to the CAN high−speed transceiver
family complementing NCV734x CAN stand−alone transceivers and
previous generations such as AMIS42665, AMIS3066x, etc.
Due to the wide common−mode voltage range of the receiver inputs
and other design features, the NCV7342 is able to reach outstanding
levels of electromagnetic susceptibility (EMS). Similarly, extremely
low electromagnetic emission (EME) is achieved by the excellent
matching of the output signals.
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MARKING
DIAGRAM
8
8
SOIC−8
CASE 751AZ
• Compatible with the ISO 11898−2, ISO 11898−5 Standards
• High Speed (up to 1 Mbps)
• VIO Pin on NCV7342−3 Version Allowing Direct Interfacing with
•
•
•
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
Typical Applications
• Automotive
• Industrial Networks
December, 2013 − Rev. 1
8
1
TxD
GND
VCC
STB
2
3
7
CANH
6
5
4
RxD
CANL
VSPLIT
NCV7342D10R2G
(Top View)
1
8
2
7
TxD
GND
VCC
Quality
© Semiconductor Components Industries, LLC, 2013
PIN ASSIGNMENT
STB
3
NV7342−3
ALYWG
G
•
•
(Note: Microdot may be in either location)
NV7342−0
ALYWG
G
•
•
•
•
•
•
•
1
NV7342−x= Specific Device Code
x = 0 or 3
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
Features
3 V to 5 V Microcontrollers
VSPLIT Pin on NCV7342−0 Version for Bus Common Mode
Stabilization
Very Low Current Consumption in Standby Mode with Wake−up via
the Bus
Excellent Electromagnetic Susceptibility (EMS) Level Over Full
Frequency Range. Very Low Electromagnetic Emissions (EME) Low
EME Also Without Common Mode (CM) Choke
Bus Pins Protected Against >15 kV System ESD Pulses
Transmit Data (TxD) Dominant Time−out Function
Bus Dominant Time−out function in Standby Mode
Under All Supply Condition the Chip Behaves Predictably
No Disturbance of the Bus Lines with an Unpowered Node
Thermal Protection
Bus Pins Protected Against Transients in an Automotive
Environment
Bus Pins Short Circuit Proof to Supply Voltage and Ground
These are Pb−Free Devices
NV7342−x
ALYW G
G
1
6
5
4
RxD
CANH
CANL
VIO
NCV7342D13R2G
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
1
Publication Order Number:
NCV7342/D
NCV7342
Table 1. KEY TECHNICAL CHARACTERISTICS AND OPERATING RANGES
Symbol
VCC
VUVDVCC
Min
Max
Unit
Power supply voltage
Parameter
Conditions
4.5
5.5
V
Undervoltage detection voltage on pin
VCC (NCV7342−3 only)
3.5
4.5
V
ICC
Supply current
Dominant; VTxD = 0 V
Recessive; VTxD = VIO
75
10
mA
ICCS
Supply current in standby mode
including VIO current
TJ v 100°C, (Note 1)
15
mA
VCANH
DC voltage at pin CANH
0 < VCC < 5.5 V; no time limit
−50
+50
V
VCANL
DC voltage at pin CANL
0 < VCC < 5.5 V; no time limit
−50
+50
V
DC voltage between CANH and CANL
pin
0 < VCC < 5.5 V
−50
+50
V
Electrostatic discharge voltage
IEC 61000−4−2 at pins CANH
and CANL
−15
15
kV
VO(dif)(bus_dom)
Differential bus output voltage in
dominant state
45 W < RLT < 65 W
1.5
3
V
CM−range
Input common−mode range for
comparator
Guaranteed differential receiver
threshold and leakage current
−35
+35
V
Cload
Load capacitance on IC outputs
15
pF
tpd0
Propagation delay TxD to RxD
(NCV7342−0 version)
See Figure 8
50
230
ns
tpd3
Propagation delay TxD to RxD
(NCV7342−3 version)
See Figure 8
50
230
ns
−40
150
°C
VCANH,L
VESD
TJ
Junction temperature
1. Not tested in production. Guaranteed by design and prototype evaluation.
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2
NCV7342
BLOCK DIAGRAMS
VCC
3
VCC
NCV7342−0
7
Thermal
Shutdown
1
TxD
VCC
Timer
5
VCC
8
STB
VSPLIT
VSPLIT
Mode &
Driver
Wake−up
Control
6
CANL
Control
4
RxD
Wake−up
Filter
GND
CANH
COMP
2
COMP
RB 20121109
Figure 1. NCV7342−0 Block Diagram
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3
NCV7342
VIO
VCC
3
5
VIO
NCV7342−3
7
Thermal
Shutdown
1
TxD
CANH
Timer
VIO
8
STB
Mode &
Driver
Wake−up
Control
6
Control
4
RxD
Wake−up
Filter
GND
COMP
2
COMP
RB 20121109
Figure 2. NCV7342−3 Block Diagram
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4
CANL
NCV7342
TYPICAL APPLICATION
VBAT
5V−reg
3V−reg
VIO
VIO
VCC
3
5
7
STB
CANH
8
Micro
CLT = 4.7 nF CAN
BUS
NCV7342−3
RxD
Controller
RLT = 60 W
4
TxD
6
1
CANL
RLT = 60 W
2
GND
GND
RB20120816
Figure 3. Application Diagram NCV7342−3
VBAT
IN
5V−reg
OUT
VCC
VCC
STB
RxD
8
7
NCV7342−0
Micro
Controller
3
4
TxD
1
RB20120816
5
6
RLT = 60 W
CANH
CANL
RLT = 60 W
2
GND
CLT = 4.7 nF
VSPLIT
GND
Figure 4. Application Diagram NCV7342−0
Table 2. PIN FUNCTION DESCRIPTION
Pin
Name
1
TxD
Description
Transmit data input; Low input Ù dominant driver; internal pull−up current
2
GND
Ground
3
VCC
Supply voltage
4
RxD
Receive data output; dominant transmitter Ù Low output
5
5
VIO
VSPLIT
Input/Output pins supply voltage. On NCV7342−3 only
Common−mode stabilization output. On NCV7342−0 only
6
CANL
Low−level CAN bus line (Low in dominant mode)
7
CANH
High−level CAN bus line (High in dominant mode)
8
STB
Standby mode control input
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5
CAN
BUS
NCV7342
FUNCTIONAL DESCRIPTION
NCV7342 has two versions which differ from each other
only by function of pin 5.
NCV7342−0: Pin 5 is common mode stabilization output
VSPLIT. (see Figure 4) This version is full replacement of
NCV7340.
monitors the bus lines for CAN bus activity. The bus lines
are terminated to ground and supply current is reduced to a
minimum, typically 10 mA. When a wake−up request is
detected by the low−power differential receiver, the signal
is first filtered and then verified as a valid wake signal after
a time period of tdwakerd. The RxD pin is driven Low by the
transceiver to inform the controller of the wake−up request.
NCV7342−3: Pin 5 is VIO pin, which is supply pin for
transceiver digital inputs/output (supplying pins TxD, RxD,
STB) The VIO pin should be connected to microcontroller
supply pin. By using VIO supply pin shared with
microcontroller, the I/O levels between microcontroller and
transceiver are properly adjusted. This adjustment allows
communication between 3 V microcontroller and the
transceiver. (See Figure 3)
VIO Supply Pin
The VIO pin (available only on NCV7342−3 version)
should be connected to microcontroller supply pin. By using
VIO supply pin shared with microcontroller the I/O levels
between microcontroller and transceiver are properly
adjusted. See Figure 3. Pin VIO also provides the internal
supply voltage for low−power differential receiver of the
transceiver. This allows detection of wake−up request even
when there is no supply voltage on Pin VCC.
Operating Modes
NCV7342 provides two modes of operation as illustrated
in Table 3. These modes are selectable through pin STB.
Split Circuit
The VSPLIT pin (available on NCV7342−0 version) is
operational only in normal mode. In standby mode this pin
is floating. The VSPLIT can be connected as shown in
Figure 4 or, if it’s not used, can be left floating. Its purpose
is to provide a stabilized DC voltage of 0.5 · VCC to the bus
reducing possible steps in the common−mode signal,
therefore reducing EME. These unwanted steps could be
caused by an unpowered node on the network with excessive
leakage current from the bus that shifts the recessive voltage
from its nominal 0.5 · VCC voltage.
Table 3. OPERATING MODES
Pin RxD
Pin
STB
Mode
Low
Normal
Bus dominant
Bus recessive
High
Standby
Wake−up
request
detected
No wake−up
request detected
Low
High
Normal Mode
In normal mode, the transceiver is able to communicate
via the bus lines. The signals are transmitted and received to
the CAN controller via the pins TxD and RxD. The slopes
on the bus lines outputs are optimized to give extremely low
EME.
Wake−up
When a valid wake−up (dominant state longer than tWake)
is received during the standby mode, the RxD pin is driven
Low after tdwakerd. The wake−up detection is not latched:
RxD returns to High state after tdwakedr when the bus signal
is released back to recessive – see Figure 5.
Standby Mode
In standby mode both the transmitter and receiver are
disabled and a very low−power differential receiver
>tWake
<tWake
CANH
CANL
STB
RxD
tdwakerd
normal
standby
tdwakedr
RB20130219
Figure 5. NCV7342 Wake−up behavior
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6
time
NCV7342
Over−temperature Detection
state. If the dominant state on the bus is kept for longer time
than tdom(bus), the RxD pin is released to High level. The
timer is reset when CAN bus changes from dominant to
recessive state. This feature prevents generating permanent
wake−up request by the bus clamped to the dominant level.
A thermal protection circuit protects the IC from damage
by switching off the transmitter if the junction temperature
exceeds a value of approximately 180°C. Because the
transmitter dissipates most of the power, the power
dissipation and temperature of the IC is reduced. All other
IC functions continue to operate. The transmitter off−state
resets when the temperature decreases below the shutdown
threshold and pin TxD goes High. The thermal protection
circuit is particularly needed in case of a bus line failure.
Fail Safe Features
A current−limiting circuit protects the transmitter output
stage from damage caused by an accidental short circuit to
either positive or negative supply voltage, although power
dissipation increases during this fault condition.
VCC supply dropping below VUVDVCC undervoltage
level will force transceiver to switch into the standby mode.
The logic level on pin STB will be ignored as long as
undervoltage condition is not recovered. (NCV7342−3
version only)
VIO supply dropping below VUVDVIO undervoltage
detection level will cause the transceiver to disengage from
the bus (no bus loading) until the VIO voltage recovers.
(NCV7342−3 version only)
The pins CANH and CANL are protected against
automotive electrical transients (according to ISO 7637; see
Figure 6). Pins TxD and STB are pulled High internally
should the input become disconnected. Pins TxD, STB and
RxD will be floating, preventing reverse supply should the
VCC supply be removed.
TxD Dominant Time−out Function
A TxD dominant time−out timer circuit prevents the bus
lines being driven to a permanent dominant state (blocking
all network communication), if pin TxD is forced
permanently Low by a hardware and/or software application
failure. The timer is triggered by a negative edge on pin TxD.
If the duration of the low−level on pin TxD exceeds the
internal timer value tdom(TxD), the transmitter is disabled,
driving the bus into a recessive state. The timer is reset by a
positive edge on pin TxD.
This TxD dominant time−out time (tdom(TxD)) limits the
minimum possible bit rate to 8 kbps.
Bus Dominant Time−out Function
Bus dominant time−out timer is started in the standby
mode when CAN bus changes from recessive to dominant
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7
NCV7342
ELECTRICAL CHARACTERISTICS
Definitions
All voltages are referenced to GND (pin 2). Positive currents flow into the IC. Sinking current means the current is flowing
into the pin; sourcing current means the current is flowing out of the pin.
Table 4. ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Conditions
Min
Max
Unit
VSUP
Supply voltage VCC, VIO
−0.3
6
V
VCANH
DC voltage at pin CANH
0 < VCC < 5.5 V; no time limit
−50
50
V
VCANL
DC voltage at pin CANL
0 < VCC < 5.5 V; no time limit
−50
50
V
DC voltage at pin CANH and CANL during load dump
condition
0 < VCC < 5.5 V; less than
one second
−
58
V
DC voltage at VSPLIT pin (On NCV7342−0 version only)
0 < VCC < 5.5 V; no time limit
−50
50
V
−0.3
6
V
−4
4
kV
−750
750
V
VCANH,Lmax
VSPLIT
VIO
DC voltage at pin TxD, RxD, STB
Vesd
Electrostatic discharge voltage at all pins according to
EIA−JESD22
Note 2
Standardized charged device model ESD pulses
according to ESD−STM5.3.1−1999
Vschaff
Latch−up
Electrostatic discharge voltage at CANH,CANL, VSPLIT
pins according to EIA−JESD22
Note 2
−8
8
kV
Electrostatic discharge voltage at CANH, CANL pins
According to IEC 61000−4−2
Note 3
−15
15
kV
Transient voltage at CANH, CANL pins, See Figure 6
Note 4
−150
100
V
Static latch−up at all pins
Note 5
150
mA
Tstg
Storage temperature
−55
+150
°C
Tamb
Ambient temperature
−40
+125
°C
Maximum junction temperature
−40
+170
°C
TJ
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
2. Standardized human body model electrostatic discharge (ESD) pulses in accordance to EIA−JESD22. Equivalent to discharging a 100 pF
capacitor through a 1.5 kW resistor.
3. System human body model electrostatic discharge (ESD) pulses. Equivalent to discharging a 150 pF capacitor through a 330 W resistor
referenced to GND. Verified by external test house
4. Pulses 1, 2a,3a and 3b according to ISO 7637 part 3. Verification by external test house.
5. Static latch−up immunity: Static latch−up protection level when tested according to EIA/JESD78.
Table 5. THERMAL CHARACTERISTICS
Symbol
Parameter
Conditions
Value
Unit
RqJA_1
Thermal Resistance Junction−to−Air, 1S0P PCB (Note 6)
Free air
125
K/W
RqJA_2
Thermal Resistance Junction−to−Air, 2S2P PCB (Note 7)
Free air
75
K/W
6. Test board according to EIA/JEDEC Standard JESD51−3, signal layer with 10% trace coverage.
7. Test board according to EIA/JEDEC Standard JESD51−7, signal layers with 10% trace coverage.
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8
NCV7342
Table 6. CHARACTERISTICS
VCC = 4.5 V to 5.5 V; VIO = 2.8V to 5.5 V (Note 8); TJ = −40 to +150°C; RLT = 60 W unless specified otherwise. On chip versions without
VIO pin reference voltage for all digital inputs and outputs is VCC instead of VIO.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
50
6.8
75
10
mA
8
15
mA
17
mA
3.5
4.5
V
6
V
SUPPLY (Pin VCC)
Supply current
Dominant; VTxD = 0 V
Recessive; VTxD = VIO
ICCS0
Supply current in standby mode
for NCV7342−0
TJ v 100°C (Note 9)
ICCS3
Supply current in standby mode
for NCV7342−3 including current
into VIO
TJ v 100°C (Note 9)
ICC
VCC
Undervoltage detection voltage on
VCC pin (NCV7342−3 only)
TRANSMITTER DATA INPUT (Pin TxD)
VIH
High−level input voltage
Output recessive
2.0
VIL
Low−level input voltage
Output dominant
−0.3
0.8
V
IIH
High−level input current
VTxD = VIO
−5
0
5
mA
IIL
Low−level input current
VTxD = 0V
−385
−200
−45
mA
Ci
Input capacitance
Not tested
5
10
pF
TRANSMITTER MODE SELECT (Pin STB)
VIH
High−level input voltage
Standby mode
2.0
VIO+0.3
(Note 10)
V
VIL
Low−level input voltage
Normal mode
−0.3
0.8
V
IIH
High−level input current
VSTB = VIO
−5
0
5
mA
IIL
Low−level input current
VSTB = 0 V
−10
−4
−1
mA
Ci
Input capacitance
Not tested
5
10
pF
RECEIVER DATA OUTPUT (Pin RxD)
IOH
High−level output current
Normal mode
VRxD = VIO – 0.4 V
−1.2
−0.4
−0.1
mA
IOL
Low−level output current
VRxD = 0.4 V
1.5
6
12
mA
VOH
High−level output voltage
Standby mode
IRxD = −100 mA
VIO –
1.1
VIO
–0.7
VIO – 0.4
V
BUS LINES (Pins CANH and CANL)
Vo(reces) (norm)
Recessive bus voltage
on pins CANH and CANL
VTxD = VIO; no load; normal
mode
2.0
2.5
3.0
V
Vo(reces) (stby)
Recessive bus voltage
on pins CANH and CANL
VTxD = VIO; no load; standby
mode
−100
0
100
mV
Io(reces) (CANH)
Recessive output current at pin
CANH
−30 V < VCANH< 35 V;
0 V < VCC < 5.5 V
−2.5
2.5
mA
Io(reces) (CANL)
Recessive output current at pin
CANL
−30 V < VCANL < 35 V;
0 V <VCC < 5.5 V
−2.5
2.5
mA
ILI(CANH)
Input leakage current to pin CANH
−10
0
10
mA
ILI(CANL)
Input leakage current to pin CANL
0W < R(VCC to GND) < 1 MW
0W < R(VIO to GND) < 1 MW
VCANL = VCANH = 5 V (Note 8)
−10
0
10
mA
VTxD = 0 V
3.0
3.6
4.25
V
Vo(dom) (CANH)
Dominant output voltage at pin
CANH
8. Only version NCV7342−3 has VIO supply pin. In NCV7342−0 this supply is provided from VCC pin.
9. Not tested in production. Guaranteed by design and prototype evaluation.
10. In case VIO > VCC, the limit is VIO + 0.3 V
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NCV7342
Table 6. CHARACTERISTICS
VCC = 4.5 V to 5.5 V; VIO = 2.8V to 5.5 V (Note 8); TJ = −40 to +150°C; RLT = 60 W unless specified otherwise. On chip versions without
VIO pin reference voltage for all digital inputs and outputs is VCC instead of VIO.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
BUS LINES (Pins CANH and CANL)
Vo(dom) (CANL)
Dominant output voltage at pin
CANL
VTxD = 0 V
0.5
1.4
1.75
V
Vo(dif) (bus_dom)
Differential bus output voltage
(VCANH − VCANL)
VTxD = 0 V; dominant;
45 W < RLT < 65 W
1.5
2.25
3.0
V
Vo(dif) (bus_rec)
Differential bus output voltage
(VCANH − VCANL)
VTxD = VIO; recessive;
no load
−120
0
50
mV
Vo(sym) (bus_dom)
Bus output voltage symmetry
VCANH + VCANL
VTxD = 0 V
0.9
1.1
VCC
Io(sc) (CANH)
Short circuit output current at pin
CANH
VCANH = 0 V; VTxD = 0 V
−90
−70
−40
mA
Io(sc) (CANL)
Short circuit output current at pin
CANL
VCANL = 36 V; VTxD = 0 V
40
70
100
mA
Differential receiver threshold
voltage
−12 V < VCANL < 12 V;
−12 V < VCANH < 12 V;
VCC = 4.75 V to 5.25 V
0.5
0.7
0.9
V
Differential receiver threshold
voltage for high common−mode
−30 V < VCANL < 35 V;
−30 V < VCANH < 35 V;
VCC = 4.75 V to 5.25 V
0.40
0.7
1.0
V
Differential receiver threshold
voltage in standby mode
−12 V < VCANL < 12 V;
−12 V < VCANH < 12 V;
VCC = 4.5 V to 5.5 V
0.4
0.8
1.15
V
Vi(dif) (th)
Vihcm(dif) (th)
Vi(dif) (th)_STDBY
Ri(cm) (CANH)
Common−mode input resistance
at pin CANH
15
26
37
kW
Ri(cm) (CANL)
Common−mode input resistance
at pin CANL
15
26
37
kW
Ri(cm) (m)
Matching between pin CANH and
pin CANL common mode input
resistance
−0.8
0
0.8
%
25
50
75
kW
Ri(dif)
VCANH = VCANL
Differential input resistance
Ci(CANH)
Input capacitance at pin CANH
VTxD = VIO; not tested
7.5
20
pF
Ci(CANL)
Input capacitance at pin CANL
VTxD = VIO; not tested
7.5
20
pF
Differential input capacitance
VTxD = VIO ; not tested
3.75
10
pF
Ci(dif)
COMMON−MODE STABILIZATION (Pin VSPLIT) Only for NCV7342−0 version
VSPLIT
Reference output voltage at pin
VSPLIT
Normal mode;
−500 mA < ISPLIT < 500 mA
0.3
0.7
VCC
VSPLITo
Reference output voltage at pin
VSPLIT
RloadVsplit > 1 MW
0.45
0.55
VCC
ISPLIT(i)
VSPLIT leakage current
Standby mode
−5
5
mA
ISPLIT(lim)
VSPLIT limitation current
Normal mode
1.3
5
mA
2.8
5.5
V
14
mA
VIO SUPPLY VOLTAGE (Pin VIO) Only for NCV7342−3 version
VIO
Supply voltage on pin VIO
IIOS
Supply current on pin VIO
Standby mode
IIONM
Supply current on pin VIO
Normal mode
Dominant; VTxD = 0 V
Recessive; VTxD = VIO
0.30
0.29
8. Only version NCV7342−3 has VIO supply pin. In NCV7342−0 this supply is provided from VCC pin.
9. Not tested in production. Guaranteed by design and prototype evaluation.
10. In case VIO > VCC, the limit is VIO + 0.3 V
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10
0.70
0.44
1.10
0.68
mA
NCV7342
Table 6. CHARACTERISTICS
VCC = 4.5 V to 5.5 V; VIO = 2.8V to 5.5 V (Note 8); TJ = −40 to +150°C; RLT = 60 W unless specified otherwise. On chip versions without
VIO pin reference voltage for all digital inputs and outputs is VCC instead of VIO.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
2.7
V
200
°C
VIO SUPPLY VOLTAGE (Pin VIO) Only for NCV7342−3 version
VUVDVIO
Undervoltage detection voltage on
VIO pin
1.3
THERMAL SHUTDOWN
TJ(SD)
Shutdown junction temperature
junction temperature rising
160
180
TIMING CHARACTERISTICS (See Figure 7 and 8)
td(TxD−BUSon)
Delay TxD to bus active
Ci = 100 pF between CANH to
CANL
60
ns
td(TxD−BUSoff)
Delay TxD to bus inactive
Ci = 100 pF between CANH to
CANL
30
ns
td(BUSon−RxD)
Delay bus active to RxD
CRxD = 15 pF
60
ns
td(BUSoff−RxD)
Delay bus inactive to RxD
CRxD = 15 pF
70
ns
tpd_dr
Propagation delay TxD to RxD
dominant to recessive transition
Ci = 100 pF between CANH to
CANL, CRxD = 15 pF
50
100
230
ns
tpd_rd
Propagation delay TxD to RxD
recessive to dominant transition
Ci = 100 pF between CANH to
CANL, CRxD = 15 pF
50
120
230
ns
td(stb−nm)
Delay standby mode to normal
mode
47
ms
tWake
Dominant time for wake−up via
bus
0.5
5
ms
tdwakerd
Delay to flag wake event
(recessive to dominant transitions)
See Figure 5
Valid bus wake−up event,
CRxD = 15 pF
1
10
ms
tdwakedr
Delay to flag end of wake event
(dominant to recessive transition)
See Figure 5
Valid bus wake−up event,
CRxD = 15 pF
0.5
5
ms
tdom(TxD)
TxD dominant time for time out
VTxD = 0 V
1.3
3
ms
tdom(bus)
Bus dominant time out
Standby mode
1.3
3
ms
8. Only version NCV7342−3 has VIO supply pin. In NCV7342−0 this supply is provided from VCC pin.
9. Not tested in production. Guaranteed by design and prototype evaluation.
10. In case VIO > VCC, the limit is VIO + 0.3 V
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NCV7342
MEASUREMENT SET−UPS AND DEFINITIONS
+5 V
100 nF
VIO
VCC
3
5
CANH
7
TxD
1 nF
NCV7342
1
RxD
Transient
Generator
1 nF
4
6
15 pF
CANL
2
8
RB20121608
GND
STB
Figure 6. Test Circuit for Automotive Transients
+5 V
100 nF
VIO
47 uF
VCC
5
3
CANH
7
1
RxD
RL
4
6
CANL
2
8
15 pF
100 pF
NCV7342
TxD
STB
RB20120816
GND
Figure 7. Test Circuit for Timing Characteristics
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12
NCV7342
recessive
TxD
recessive
dominant
50%
50%
CANH
CANL
0.9 V
Vi(dif) = VCANH − VCANL
0.5 V
0.3 x VCC*
RxD
td(TxD−BUSon)
0.7 x VCC*
td(TxD−BUSoff)
td(BUSon−RxD)
tpd_rd
tpd_dr
*On NCV7342−3 VCC is replaced by VIO
td(BUSoff−RxD)
RB20130429
Figure 8. Transceiver Timing Diagram
DEVICE ORDERING INFORMATION
Part Number
Description
NCV7342D10R2G
High Speed CAN Transceiver
with Standby and VSPLIT pin
NCV7342D13R2G
High Speed CAN Transceiver
with Standby and VIO pin
(available in 2014)
Package
Shipping†
SOIC 150 8 GREEN (Matte Sn,
JEDEC MS−012)
(Pb−Free)
3000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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13
NCV7342
PACKAGE DIMENSIONS
SOIC 8
CASE 751AZ
ISSUE O
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14
NCV7342
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NCV7342/D