TJA1049
High-speed CAN transceiver with Standby mode
Rev. 4 — 15 January 2015
Product data sheet
1. General description
The TJA1049 high-speed CAN transceiver provides an interface between a Controller
Area Network (CAN) protocol controller and the physical two-wire CAN bus. The
transceiver is designed for high-speed CAN applications in the automotive industry,
supplying the differential transmit and receive capability to (a microcontroller with) a CAN
protocol controller.
The TJA1049 belongs to the third generation of high-speed CAN transceivers from NXP
Semiconductors, offering significant improvements over first- and second-generation
devices such as the TJA1040. It offers improved ElectroMagnetic Compatibility (EMC)
and ElectroStatic Discharge (ESD) performance, and also features:
• Ideal passive behavior to the CAN bus when the supply voltage is off
• A very low-current Standby mode with bus wake-up capability
• TJA1049T/3 and TJA1049TK/3 can be interfaced directly to microcontrollers with
supply voltages from 3 V to 5 V
The TJA1049 implements the CAN physical layer as defined in the current ISO11898
standard (ISO11898-2:2003, ISO11898-5:2007). Pending the release of the updated
version of ISO11898-2 including CAN FD, additional timing parameters defining loop
delay symmetry are specified. This implementation enables reliable communication in the
CAN FD fast phase at data rates up to 2 Mbit/s.
These features make the TJA1049 an excellent choice for all types of HS-CAN networks,
in nodes that require a low-power mode with wake-up capability via the CAN bus.
2. Features and benefits
2.1 General
Fully ISO 11898-2:2003 and ISO 11898-5:2007 compliant
Loop delay symmetry timing enables reliable communication at data rates up to
2 Mbit/s in the CAN FD fast phase
Suitable for 12 V and 24 V systems
Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
VIO input on TJA1049T/3 and TJA1049TK/3 allows for direct interfacing with 3 V to 5 V
microcontrollers
SPLIT voltage output on TJA1049T and TJA1049TK for stabilizing recessive bus level
Both variants available in SO8 and HVSON8 packages
Leadless HVSON8 package (3.0 mm 3.0 mm) with improved Automated Optical
Inspection (AOI) capability
TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
AEC-Q100 qualified
Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)
compliant)
2.2 Low-power management
Very low-current Standby mode with host and bus wake-up capability
Functional behavior predictable under all supply conditions
Transceiver disengages from the bus when not powered up (zero load)
2.3 Protection
High ESD handling capability on the bus pins
Bus pins protected against transients in automotive environments
Transmit Data (TXD) dominant time-out function
Bus-dominant time-out function in Standby mode
Undervoltage detection on pins VCC and VIO
Thermally protected
3. Quick reference data
Table 1.
Quick reference data
Symbol
Parameter
Min
Typ
Max
Unit
VCC
supply voltage
4.75
-
5.25
V
VIO
supply voltage on pin VIO
2.8
-
5.5
V
Vuvd(VCC)
undervoltage detection voltage
on pin VCC
3.5
-
4.75
V
Vuvd(VIO)
undervoltage detection voltage
on pin VIO
1.3
2.0
2.7
V
ICC
supply current
Standby mode: TJA1049T, TJA1049TK
-
10
15
A
Standby mode: TJA1049T/3, TJA1049TK/3
-
-
5
A
Normal mode; bus recessive
2.5
5
7.5
mA
Normal mode; bus dominant
20
45
65
mA
Standby mode
5
-
14
A
IIO
Conditions
supply current on pin VIO
Vuvd(VIO)
undervoltage detection voltage
on pin VIO
Normal mode; bus recessive
15
80
200
A
Normal mode; bus dominant
-
350
1000
A
1.3
2.0
2.7
V
VESD
electrostatic discharge voltage
8
-
+8
kV
VCANH
voltage on pin CANH
58
-
+58
V
VCANL
voltage on pin CANL
58
-
+58
V
VSPLIT
voltage on pin SPLIT
58
-
+58
V
Tvj
virtual junction temperature
40
-
+150
C
TJA1049
Product data sheet
IEC 61000-4-2 at pins CANH and CANL
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
2 of 24
TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
4. Ordering information
Table 2.
Ordering information
Type number[1]
Package
Name
Description
Version
TJA1049T
SO8
plastic small outline package; 8 leads; body width 3.9 mm
SOT96-1
TJA1049TK
HVSON8
plastic thermal enhanced very thin small outline package; no leads;
8 terminals; body 3 3 0.85 mm
SOT782-1
TJA1049T/3
SO8
plastic small outline package; 8 leads; body width 3.9 mm
SOT96-1
TJA1049TK/3
HVSON8
plastic thermal enhanced very thin small outline package; no leads;
8 terminals; body 3 3 0.85 mm
SOT782-1
[1]
TJA1049T and TJA1049TK with SPLIT pin; TJA1049T/3 and TJA1049TK/3 with VIO pin.
TJA1049
Product data sheet
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3 of 24
TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
5. Block diagram
VIO
VCC
5
3
VCC
VIO
TXD
TJA1049
TEMPERATURE
PROTECTION
(1)
7
1
TIME-OUT
SLOPE
CONTROL
AND
DRIVER
MODE
CONTROL
SPLIT
6
CANH
CANL
VIO(1)
STB
RXD
8
5
SPLIT
MUX
AND
DRIVER
4
WAKE-UP
FILTER
2
015aaa164
GND
(1) In a transceiver with a SPLIT pin, the VIO input is internally connected to VCC.
Fig 1.
TJA1049
Product data sheet
Block diagram
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TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
6. Pinning information
6.1 Pinning
TJA1049
7-$7.
WHUPLQDO
LQGH[DUHD
TXD
1
8
STB
7;' GND
2
7
CANH
*1' 67%
&$1+
VCC
3
6
CANL
9&& &$1/
5;' 63/,7
RXD
4
5
SPLIT
DDD
7UDQVSDUHQWWRSYLHZ
015aaa166
a. TJA1049T: SO8 package
b. TJA1049TK: HVSON8 package
7-$7
7;'
WHUPLQDO
LQGH[DUHD
67%
7;' *1' 67%
&$1+
9&& &$1/
5;' 9,2
*1'
&$1+
9&&
&$1/
5;'
9,2
DDD
7UDQVSDUHQWWRSYLHZ
DDD
c. TJA1049T/3: SO8 package
Fig 2.
7-$7.
d. TJA1049TK/3: HVSON8 package
Pin configuration diagrams
6.2 Pin description
Table 3.
Pin description
Symbol
Pin
Description
TXD
1
transmit data input
GND
2[1]
ground supply
VCC
3
supply voltage
RXD
4
receive data output; reads out data from the bus lines
SPLIT
5
common-mode stabilization output; TJA1049T and TJA1049TK only
VIO
5
supply voltage for I/O level adapter; TJA1049T/3 and TJA1049TK/3 only
CANL
6
LOW-level CAN bus line
CANH
7
HIGH-level CAN bus line
STB
8
Standby mode control input
[1]
For enhanced thermal and electrical performance, the exposed center pad of the HVSON8 package should
be soldered to board ground.
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
5 of 24
TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
7. Functional description
The TJA1049 is a HS-CAN stand-alone transceiver with Standby mode. It combines the
functionality of the PCA82C250, PCA82C251 and TJA1040 transceivers with improved
EMC and ESD handling capability and quiescent current performance. Improved slope
control and high DC handling capability on the bus pins provide additional application
flexibility.
The TJA1049 is available in two versions, distinguished only by the function of pin 5:
• The TJA1049T and TJA1049TK are 100 % backwards compatible with the TJA1040
when operating with a 5 V microcontroller, and also cover existing PCA82C250 and
PCA82C251 applications
• The TJA1049T/3 and TJA1049TK/3 allow for direct interfacing to microcontrollers with
supply voltages down to 3 V
7.1 Operating modes
The TJA1049 supports two operating modes, Normal and Standby, which are selectable
via pin STB. See Table 4 for a description of the operating modes under normal supply
conditions.
Table 4.
Operating modes
Mode
Pin STB
Pin RXD
LOW
HIGH
Normal
LOW
bus dominant
bus recessive
Standby
HIGH
wake-up request
detected
no wake-up request
detected
7.1.1 Normal mode
A LOW level on pin STB selects Normal mode. In this mode, the transceiver can transmit
and receive data via the bus lines CANH and CANL (see Figure 1 for the block diagram).
The differential receiver converts the analog data on the bus lines into digital data which is
output on pin RXD. The slopes of the output signals on the bus lines are controlled
internally and are optimized in a way that guarantees the lowest possible EME.
7.1.2 Standby mode
A HIGH level on pin STB selects Standby mode. In Standby mode, the transceiver is not
able to transmit or correctly receive data via the bus lines. The transmitter and
Normal-mode receiver blocks are switched off to reduce supply current, and only a
low-power differential receiver monitors the bus lines for activity. The wake-up filter on the
output of the low-power receiver does not latch bus dominant states, but ensures that only
bus dominant and bus recessive states that persist longer than tfltr(wake)bus are reflected on
pin RXD.
In Standby mode, the bus lines are biased to ground to minimize the system supply
current. The low-power receiver is supplied by VIO, and is capable of detecting CAN bus
activity even if VIO is the only supply voltage available. When pin RXD goes LOW to signal
a wake-up request, a transition to Normal mode will not be triggered until STB is forced
LOW.
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
6 of 24
TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
7.2 Fail-safe features
7.2.1 TXD dominant time-out function
A ‘TXD dominant time-out’ timer is started when pin TXD is set LOW. If the LOW state on
pin TXD persists for longer than tto(dom)TXD, the transmitter is disabled, releasing the bus
lines to recessive state. This function prevents a hardware and/or software application
failure from driving the bus lines to a permanent dominant state (blocking all network
communications). The TXD dominant time-out timer is reset when pin TXD is set HIGH.
The TXD dominant time-out time also defines the minimum possible bit rate of 40 kbit/s.
7.2.2 Bus dominant time-out function
In Standby mode, a 'bus dominant time-out' timer is started when the CAN bus changes
from recessive to dominant state. If the dominant state on the bus persists for longer than
tto(dom)bus, the RXD pin is forced HIGH. This prevents a clamped dominant bus (due to a
bus short-circuit or a failure in one of the other nodes on the network) generating a
permanent wake-up request. The bus dominant time-out timer is reset when the CAN bus
changes from dominant to recessive state.
7.2.3 Internal biasing of TXD and STB input pins
Pins TXD and STB have internal pull-ups to VIO to ensure a safe, defined state in case
one (or both) of these pins is left floating. Pull-up currents flow in these pins in all states;
both pins should be held HIGH in Standby mode to minimize standby current.
7.2.4 Undervoltage detection on pins VCC and VIO
Should VCC drop below the VCC undervoltage detection level, Vuvd(VCC), the transceiver
will switch to Standby mode. The logic state of pin STB will be ignored until VCC has
recovered.
Should VIO drop below the VIO undervoltage detection level, Vuvd(VIO), the transceiver will
switch off and disengage from the bus (zero load) until VIO has recovered.
7.2.5 Overtemperature protection
The output drivers are protected against overtemperature conditions. If the virtual junction
temperature exceeds the shutdown junction temperature, Tj(sd), the output drivers will be
disabled until the virtual junction temperature falls below Tj(sd) and TXD becomes
recessive again. Including the TXD condition ensures that output driver oscillation due to
temperature drift is avoided.
7.3 SPLIT output pin and VIO supply pin
Two versions of the TJA1049 are available, only differing in the function of a single pin.
Pin 5 is either a SPLIT output pin or a VIO supply pin.
7.3.1 SPLIT pin
Using the SPLIT pin on the TJA1049T or TJA1049TK in conjunction with a split
termination network (see Figure 3 and Figure 6) can help to stabilize the recessive voltage
level on the bus. This will reduce EME in networks with DC leakage to ground (e.g. from
deactivated nodes with poor bus leakage performance). In Normal mode, pin SPLIT
delivers a DC output voltage of 0.5VCC. In Standby mode or when VCC is off, pin SPLIT is
floating.
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
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TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
VCC
TJA1049
CANH
60 Ω
R
VSPLIT = 0.5 VCC
in normal mode;
otherwise floating
SPLIT
60 Ω
R
CANL
GND
Fig 3.
015aaa167
Stabilization circuitry and application for version with SPLIT pin
7.3.2 VIO supply pin
Pin VIO on the TJA1049T/3 and TJA1049TK/3 should be connected to the microcontroller
supply voltage (see Figure 7). This will adjust the signal levels of pins TXD, RXD and STB
to the I/O levels of the microcontroller. Pin VIO also provides the internal supply voltage for
the low-power differential receiver of the transceiver. For applications running in
low-power mode, this allows the bus lines to be monitored for activity even if there is no
supply voltage on pin VCC.
For versions of the TJA1049 without a VIO pin, the VIO input is internally connected to VCC.
This sets the signal levels of pins TXD, RXD and STB to levels compatible with 5 V
microcontrollers.
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
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TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
8. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are referenced to GND.
Symbol Parameter
Conditions
Min
Max
Unit
58
+58
V
Vx
voltage on pin x
on pins CANH, CANL and SPLIT
Vtrt
transient voltage
on pins CANH and CANL
[1]
VESD
electrostatic discharge voltage
IEC 61000-4-2 (150 pF, 330 )
[2]
on any other pin
at pins CANH and CANL
Human Body Model (HBM); 100 pF, 1.5 k
at any other pin
at any pin
virtual junction temperature
Tstg
storage temperature
8
+8
kV
8
+8
kV
4
+4
kV
300
+300
V
750
+750
V
[5]
at corner pins
Tvj
V
V
[4]
at any pin
Charged Device Model (CDM); field Induced
charge; 4 pF
+7
+100
[3]
at pins CANH and CANL
Machine Model (MM); 200 pF, 0.75 H, 10
0.3
150
[6]
500
+500
V
40
+150
C
55
+150
C
[1]
Verified by an external test house to ensure pins CANH and CANL can withstand ISO 7637 part 3 automotive transient test pulses 1, 2a,
3a and 3b.
[2]
According to IEC TS 62228 (2007), Section 4.3; DIN EN 61000-4-2.
[3]
According to AEC-Q100-002.
[4]
According to AEC-Q100-003.
[5]
According to AEC-Q100-011 Rev-C1. The classification level is C4B.
[6]
In accordance with IEC 60747-1. An alternative definition of virtual junction temperature is: Tvj = Tamb + P Rth(vj-a), where Rth(vj-a) is a
fixed value to be used for the calculation of Tvj. The rating for Tvj limits the allowable combinations of power dissipation (P) and ambient
temperature (Tamb).
9. Thermal characteristics
Table 6.
Thermal characteristics
According to IEC 60747-1.
Symbol
Parameter
Rth(j-a)
thermal resistance from junction to ambient
TJA1049
Product data sheet
Conditions
Typ
Unit
SO8 package; in free air
145
K/W
HVSON8 package; in free air
50
K/W
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TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
10. Static characteristics
Table 7.
Static characteristics
Tvj = 40 C to +150 C; VCC = 4.75 V to 5.25 V; VIO = 2.8 V to 5.5 V[1]; RL = 60 unless specified otherwise; All voltages are
defined with respect to ground. Positive currents flow into the IC.[2]
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
4.75
-
5.25
V
TJA1049T or TJA1049TK;
includes IIO; VTXD = VIO
-
10
15
A
TJA1049T/3 or TJA1049TK/3
-
-
5
A
recessive; VTXD = VIO
2.5
5
7.5
mA
dominant; VTXD = 0 V
20
45
65
mA
3.5
-
4.75
V
2.8
-
5.5
V
5
-
14
A
recessive; VTXD = VIO
15
80
200
A
dominant; VTXD = 0 V
-
350
1000
A
1.3
2.0
2.7
V
0.7VIO
-
VIO +
0.3
V
0.3
-
0.3VIO
V
Supply; pin VCC
VCC
supply voltage
ICC
supply current
Standby mode
Normal mode
Vuvd(VCC)
undervoltage detection
voltage on pin VCC
I/O level adapter supply; pin VIO[1]
VIO
supply voltage on pin VIO
IIO
supply current on pin VIO
Standby mode; VTXD = VIO
Normal mode
Vuvd(VIO)
undervoltage detection
voltage on pin VIO
Standby mode control input; pin STB
[3]
VIH
HIGH-level input voltage
VIL
LOW-level input voltage
IIH
HIGH-level input current
VSTB = VIO
1
-
+1
A
IIL
LOW-level input current
VSTB = 0 V
15
-
1
A
0.7VIO
-
VIO +
0.3
V
0.3
-
0.3VIO
V
5
-
+5
A
260
150
30
A
-
5
10
pF
TJA1049T or TJA1049TK;
VRXD = VCC 0.4 V
8
3
1
mA
TJA1049T/3 or TJA1049TK/3;
VRXD = VIO 0.4 V
9
3
1
mA
VRXD = 0.4 V; bus dominant
1
-
12
mA
CAN transmit data input; pin TXD
[3]
VIH
HIGH-level input voltage
VIL
LOW-level input voltage
IIH
HIGH-level input current
VTXD = VIO
IIL
LOW-level input current
VTXD = 0 V
Ci
[4]
input capacitance
CAN receive data output; pin RXD
IOH
IOL
HIGH-level output current
LOW-level output current
TJA1049
Product data sheet
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© NXP N.V. 2015. All rights reserved.
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TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
Table 7.
Static characteristics …continued
Tvj = 40 C to +150 C; VCC = 4.75 V to 5.25 V; VIO = 2.8 V to 5.5 V[1]; RL = 60 unless specified otherwise; All voltages are
defined with respect to ground. Positive currents flow into the IC.[2]
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
pin CANH
2.75
3.5
4.5
V
pin CANL
0.5
1.5
2.25
V
Bus lines; pins CANH and CANL
VO(dom)
dominant output voltage
VTXD = 0 V; t < tto(dom)TXD
Vdom(TX)sym
transmitter dominant voltage Vdom(TX)sym = VCC VCANH VCANL
symmetry
400
-
+400
mV
VO(dif)bus
bus differential output
voltage
VTXD = 0 V; t < tto(dom)TXD
VCC = 4.75 V to 5.25 V
RL = 45 to 65
1.5
-
3
V
VTXD = VIO recessive; no load
50
-
+50
mV
VO(rec)
recessive output voltage
Normal mode; VTXD = VIO; no load
2
0.5VCC 3
V
0.1
-
+0.1
V
Standby mode; no load
Vth(RX)dif
Vcm(CAN) = 12 V to +12 V
differential receiver
threshold voltage
[5]
Normal mode
Standby mode
[6]
Vcm(CAN) = 12 V to +12 V
Normal mode
Vhys(RX)dif
differential receiver
hysteresis voltage
IO(sc)dom
dominant short-circuit output VTXD = 0 V; t < tto(dom)TXD; VCC = 5 V
current
pin CANH; VCANH = 0 V
pin CANL; VCANL = 5 V / 40 V
0.5
-
0.9
V
0.4
-
1.15
V
100
-
300
mV
100
70
40
mA
40
70
100
mA
IO(sc)rec
recessive short-circuit
output current
Normal mode; VTXD = VIO
VCANH = VCANL = 27 V to +32 V
5
-
+5
mA
IL
leakage current
VCC = VIO = 0 V;
VCANH = VCANL = 5 V
3
-
+3
A
Ri
input resistance
9
15
28
k
Ri
input resistance deviation
Ri(dif)
differential input resistance
Ci(cm)
common-mode input
capacitance
Ci(dif)
differential input capacitance
3
-
+3
%
19
30
52
k
[4]
-
-
20
pF
[4]
-
-
10
pF
between VCANH and VCANL
Common mode stabilization output, pin SPLIT; only relevant for TJA1049T and TJA1049TK
0.3VCC
VO
output voltage
Normal mode
ISPLIT = 500 A to +500 A
0.5VCC 0.7VCC
V
Normal mode; RL = 1 M
0.45VCC 0.5VCC 0.55VCC V
IL
leakage current
Standby mode
VSPLIT = 58 V to +58 V
5
-
+5
A
-
190
-
C
Temperature detection
Tj(sd)
[4]
shutdown junction
temperature
[1]
Only TJA1049T/3 and TJA1049TK/3 have a VIO pin; in TJA1049T and TJA1049TK, the VIO input is internally connected to VCC.
[2]
All parameters are guaranteed over the virtual junction temperature range by design. Factory testing uses correlated test conditions to
cover the specified temperature and power supply voltage range.
TJA1049
Product data sheet
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TJA1049
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High-speed CAN transceiver with Standby mode
[3]
Maximum value assumes VCC < VIO; if VCC > VIO, the maximum value will be VCC + 0.3 V.
[4]
Not tested in production; guaranteed by design.
[5]
Vcm(CAN) is the common mode voltage of CANH and CANL.
[6]
For TJA1049T/3 and TJA1049TK/3: values valid when VIO = 4.5 V to 5.5 V; when VIO = 2.8 V to 4.5 V, values valid when
Vcm(CAN) = 12 V to +12 V.
11. Dynamic characteristics
Table 8.
Dynamic characteristics
Tvj = 40 C to +150 C; VCC = 4.75 V to 5.25 V; VIO = 2.8 V to 5.5 V[1]; RL = 60 unless specified otherwise. All voltages are
defined with respect to ground. Positive currents flow into the IC.[2]
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Transceiver timing; pins CANH, CANL, TXD and RXD; see Figure 8 and Figure 4
td(TXD-busdom)
delay time from TXD to bus dominant
Normal mode
-
65
-
ns
td(TXD-busrec)
delay time from TXD to bus recessive
Normal mode
-
90
-
ns
td(busdom-RXD) delay time from bus dominant to RXD
Normal mode
-
60
-
ns
td(busrec-RXD)
delay time from bus recessive to RXD
Normal mode
-
65
-
ns
tPD(TXD-RXD)
propagation delay from TXD to RXD
versions with SPLIT pin
Normal mode
60
-
220
ns
versions with VIO pin
Normal mode
60
-
250
ns
[3]
tbit(RXD)
bit time on pin RXD
tbit(TXD) = 500 ns
400
-
550
ns
tto(dom)TXD
TXD dominant time-out time
VTXD = 0 V; Normal mode
0.3
2
5
ms
tto(dom)bus
bus dominant time-out time
Standby mode
0.3
2
5
ms
tfltr(wake)bus
bus wake-up filter time
version with SPLIT pin
Standby mode
0.5
1
3
s
versions with VIO pin
Standby mode
0.5
1.5
5
s
7
25
47
s
td(stb-norm)
standby to normal mode delay time
[1]
Only TJA1049T/3 and TJA1049TK/3 have a VIO pin; in the TJA1049T and TJA1049TK, the VIO input is internally connected to VCC.
[2]
All parameters are guaranteed over the virtual junction temperature range by design. Factory testing uses correlated test conditions to
cover the specified temperature and power supply voltage range.
[3]
See Figure 5.
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
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TJA1049
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High-speed CAN transceiver with Standby mode
HIGH
TXD
LOW
CANH
CANL
dominant
0.9 V
VO(dif)(bus)
0.5 V
recessive
HIGH
0.7VIO
RXD
0.3VIO
LOW
td(TXD-busrec)
td(TXD-busdom)
td(busrec-RXD)
td(busdom-RXD)
tPD(TXD-RXD)
Fig 4.
tPD(TXD-RXD)
015aaa025
CAN transceiver timing diagram
7;'
[WELW7;'
WELW7;'
5;'
WELW5;'
DDD
Fig 5.
TJA1049
Product data sheet
Loop delay symmetry timing diagram
All information provided in this document is subject to legal disclaimers.
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High-speed CAN transceiver with Standby mode
12. Application information
12.1 Application diagrams
5V
BAT
VCC
CANH
CANH
SPLIT
STB
Pyy
TJA1049
TXD
CANL
CANL
VDD
Pxx
RXD
MICROCONTROLLER
TX0
RX0
GND
GND
Fig 6.
015aaa168
Typical application with TJA1049T or TJA1049TK and a 5 V microcontroller.
%$7
9
,1+
9
9&&
9,2
67%
&$1+
&$1+
7-$7
7-$7.
&$1/
&$1/
7;'
5;'
9''
3[[
0,&52
&21752//(5
7;
5;
*1'
*1'
DDD
Switching off the 5 V supply in Standby mode (dotted line) is optional.
Fig 7.
Typical application with TJA1049T/3 or TJA1049TK/3 and a 3 V microcontroller.
12.2 Application hints
Further information on the application of the TJA1049 can be found in NXP application
hints AH1021 Application Hints - High-speed CAN transceiver TJA1049.
TJA1049
Product data sheet
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© NXP N.V. 2015. All rights reserved.
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TJA1049
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High-speed CAN transceiver with Standby mode
13. Test information
+5 V
47 μF
100 nF
VCC
TXD
CANH
TJA1049
SPLIT
RXD
GND
RL
100 pF
CANL
STB
15 pF
015aaa165
(1) For versions with a VIO pin (TJA1049T/3 and TJA1049TK/3), the VIO pin is connected to pin VCC.
Fig 8.
Timing test circuit for CAN transceiver
13.1 Quality information
This product has been qualified in accordance with the Automotive Electronics Council
(AEC) standard Q100 Rev-G - Failure mechanism based stress test qualification for
integrated circuits, and is suitable for use in automotive applications.
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
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High-speed CAN transceiver with Standby mode
14. Package outline
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TJA1049
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
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TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
+9621SODVWLFWKHUPDOHQKDQFHGYHU\WKLQVPDOORXWOLQHSDFNDJHQROHDGV
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TJA1049
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
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High-speed CAN transceiver with Standby mode
15. Handling information
All input and output pins are protected against ElectroStatic Discharge (ESD) under
normal handling. When handling ensure that the appropriate precautions are taken as
described in JESD625-A or equivalent standards.
16. 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”.
16.1 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.
16.2 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
16.3 Wave soldering
Key characteristics in wave soldering are:
TJA1049
Product data sheet
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High-speed CAN transceiver with Standby mode
• 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
16.4 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 11) 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 9 and 10
Table 9.
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 10.
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 11.
TJA1049
Product data sheet
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High-speed CAN transceiver with Standby mode
maximum peak temperature
= MSL limit, damage level
temperature
minimum peak temperature
= minimum soldering temperature
peak
temperature
time
001aac844
MSL: Moisture Sensitivity Level
Fig 11. Temperature profiles for large and small components
For further information on temperature profiles, refer to Application Note AN10365
“Surface mount reflow soldering description”.
17. Soldering of HVSON packages
Section 16 contains a brief introduction to the techniques most commonly used to solder
Surface Mounted Devices (SMD). A more detailed discussion on soldering HVSON
leadless package ICs can found in the following application notes:
• AN10365 “Surface mount reflow soldering description”
• AN10366 “HVQFN application information”
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
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High-speed CAN transceiver with Standby mode
18. Revision history
Table 11.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
TJA1049 v.4
20150115
Product data sheet
-
TJA1049 v.3
Modifications
•
•
•
•
•
•
•
•
•
•
Section 1: text revised (1st paragraph); paragraph added
Section 2.1: text revised (1st item), features added
Table 1: measurements conditions changed: VCANH, VCANL, VSPLIT
Table 3: Table note 1: text revised
Section 7.1.1: text revised
Table 5: measurements conditions changed: Vx, VESD; table note section revised
Table 8: parameter tbit(RXD) added; Table note 3 and Figure 5 added
Figure 8 moved to Section 13 “Test information”
Section 12.2 “Application hints”: added
Section 19.3: ‘Translations’ disclaimer added
TJA1049 v3
20130916
Product data sheet
-
TJA1049 v.2
TJA1049 v.2
20110323
Product data sheet
-
TJA1049 v.1
TJA1049 v.1
20100924
Product data sheet
-
-
TJA1049
Product data sheet
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High-speed CAN transceiver with Standby mode
19. Legal information
19.1 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.
19.2 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.
19.3 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.
TJA1049
Product data sheet
Suitability for use in automotive applications — This NXP
Semiconductors product has been qualified for use in automotive
applications. Unless otherwise agreed in writing, the product is 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.
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
22 of 24
TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
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.
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.
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.
19.4 Trademarks
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
20. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
TJA1049
Product data sheet
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Rev. 4 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
23 of 24
TJA1049
NXP Semiconductors
High-speed CAN transceiver with Standby mode
21. Contents
1
2
2.1
2.2
2.3
3
4
5
6
6.1
6.2
7
7.1
7.1.1
7.1.2
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.3
7.3.1
7.3.2
8
9
10
11
12
12.1
12.2
13
13.1
14
15
16
16.1
16.2
16.3
16.4
17
18
19
19.1
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Low-power management . . . . . . . . . . . . . . . . . 2
Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 6
Operating modes . . . . . . . . . . . . . . . . . . . . . . . 6
Normal mode . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Standby mode. . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fail-safe features . . . . . . . . . . . . . . . . . . . . . . . 7
TXD dominant time-out function . . . . . . . . . . . . 7
Bus dominant time-out function . . . . . . . . . . . . 7
Internal biasing of TXD and STB input pins . . . 7
Undervoltage detection on pins VCC and VIO . . 7
Overtemperature protection . . . . . . . . . . . . . . . 7
SPLIT output pin and VIO supply pin . . . . . . . . 7
SPLIT pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
VIO supply pin . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thermal characteristics . . . . . . . . . . . . . . . . . . 9
Static characteristics. . . . . . . . . . . . . . . . . . . . 10
Dynamic characteristics . . . . . . . . . . . . . . . . . 12
Application information. . . . . . . . . . . . . . . . . . 14
Application diagrams . . . . . . . . . . . . . . . . . . . 14
Application hints . . . . . . . . . . . . . . . . . . . . . . . 14
Test information . . . . . . . . . . . . . . . . . . . . . . . . 15
Quality information . . . . . . . . . . . . . . . . . . . . . 15
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 16
Handling information. . . . . . . . . . . . . . . . . . . . 18
Soldering of SMD packages . . . . . . . . . . . . . . 18
Introduction to soldering . . . . . . . . . . . . . . . . . 18
Wave and reflow soldering . . . . . . . . . . . . . . . 18
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 18
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 19
Soldering of HVSON packages. . . . . . . . . . . . 20
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 21
Legal information. . . . . . . . . . . . . . . . . . . . . . . 22
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 22
19.2
19.3
19.4
20
21
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact information . . . . . . . . . . . . . . . . . . . .
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22
22
23
23
24
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP N.V. 2015.
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: 15 January 2015
Document identifier: TJA1049