TJA1044
High-speed CAN transceiver with Standby mode
Rev. 6 — 24 August 2017
Product data sheet
1. General description
The TJA1044 is part of the Mantis family of high-speed CAN transceivers. It 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, providing the differential transmit and receive capability to (a
microcontroller with) a CAN protocol controller.
The TJA1044 offers a feature set optimized for 12 V automotive applications, with
significant improvements over NXP's first- and second-generation CAN transceivers, such
as the TJA1040 and TJA1042, and excellent ElectroMagnetic Compatibility (EMC)
performance. Additionally, the TJA1044 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
•
Excellent EMC performance at speeds up to 500 kbit/s, even without a common mode
choke
•
TJA1044GT/3 and TJA1044GTK/3 can be interfaced directly to microcontrollers with
supply voltages from 3 V to 5 V
These features make the TJA1044 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.
The TJA1044 implements the CAN physical layer as defined in ISO 11898-2:2016 and
SAE J2284-1 to SAE J2284-5. The TJA1044T is specified for data rates up to 1 Mbit/s.
Additional timing parameters defining loop delay symmetry are specified for the other
variants. This implementation enables reliable communication in the CAN FD fast phase
at data rates up to 5 Mbit/s.
2. Features and benefits
2.1 General
Fully ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant
Very low-current Standby mode with host and bus wake-up capability
Optimized for use in 12 V automotive systems
EMC performance satisfies 'Hardware Requirements for LIN, CAN and FlexRay
Interfaces in Automotive Applications’, Version 1.3, May 2012.
AEC-Q100 qualified
Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)
compliant)
NXP Semiconductors
TJA1044
High-speed CAN transceiver with Standby mode
V
IO
input on TJA1044x/3 variants allows for direct interfacing with 3 V to 5 V
microcontrollers. Variants without a V
IO
pin can interface with 3.3 V and 5 V-supplied
microcontrollers, provided the microcontroller I/Os are 5 V tolerant.
Both V
IO
and non-V
IO
variants are available in SO8 and leadless HVSON8 (3.0
mm
3.0 mm) packages; HVSON8 with improved Automated Optical Inspection (AOI)
capability.
2.2 Predictable and fail-safe behavior
Functional behavior predictable under all supply conditions
Transceiver disengages from bus when not powered (zero load)
Transmit Data (TXD) and bus dominant time-out functions
Internal biasing of TXD and STB input pins
2.3 Protection
High ESD handling capability on the bus pins (8 kV IEC and HBM)
Bus pins protected against transients in automotive environments
Undervoltage detection on pins V
CC
and V
IO
Thermally protected
2.4 TJA1044 CAN FD (applicable to all product variants except TJA1044T)
Timing guaranteed for CAN FD data rates up to 5 Mbit/s
Improved TXD to RXD propagation delay of 210 ns
TJA1044
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2017. All rights reserved.
Product data sheet
Rev. 6 — 24 August 2017
2 of 27
NXP Semiconductors
TJA1044
High-speed CAN transceiver with Standby mode
3. Quick reference data
Table 1.
Symbol
V
CC
I
CC
Quick reference data
Parameter
supply voltage
supply current
Standby mode; variants without a V
IO
pin
Standby mode; variants with a V
IO
pin
Normal mode; bus recessive
Normal mode; bus dominant
V
uvd(stb)(VCC)
V
uvd(swoff)(VCC)
V
IO
I
IO
standby undervoltage detection
voltage on pin V
CC
switch-off undervoltage
detection voltage on pin V
CC
supply voltage on pin V
IO
supply current on pin V
IO
Standby mode
Normal mode; bus recessive
Normal mode; bus dominant
V
uvd(swoff)(VIO)
V
ESD
V
CANH
V
CANL
T
vj
switch-off undervoltage
detection voltage on pin V
IO
electrostatic discharge voltage
voltage on pin CANH
voltage on pin CANL
virtual junction temperature
IEC 61000-4-2 at pins CANH and CANL
limiting value according to IEC60134
limiting value according to IEC60134
valid for variants without a V
IO
pin
Conditions
Min
4.75
-
-
2
20
3.5
1.3
2.95
-
10
-
2.4
8
42
42
40
Typ
-
10
-
5
45
4
2.4
-
10
80
350
2.6
-
-
-
-
Max
5.25
15
5
10
70
4.3
3.4
5.25
16.5
200
1000
2.8
+8
+42
+42
+150
Unit
V
A
A
mA
mA
V
V
V
A
A
A
V
kV
V
V
C
4. Ordering information
Table 2.
Ordering information
Package
Name
TJA1044T
TJA1044GT
TJA1044GT/3
TJA1044GTK
TJA1044GTK/3
[1]
Type number
[1]
Description
plastic small outline package; 8 leads; body width 3.9 mm
Version
SOT96-1
SO8
HVSON8
plastic thermal enhanced very thin small outline package; no leads;
8 terminals; body 3
3
0.85 mm
SOT782-1
TJA1044GT/3 and TJA1044GTK/3 with V
IO
pin; all variants other than TJA1044T support CAN FD.
TJA1044
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2017. All rights reserved.
Product data sheet
Rev. 6 — 24 August 2017
3 of 27
NXP Semiconductors
TJA1044
High-speed CAN transceiver with Standby mode
5. Block diagram
(1) V
IO
= V
CC
in non-V
IO
product variants.
Fig 1.
Block diagram
TJA1044
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2017. All rights reserved.
Product data sheet
Rev. 6 — 24 August 2017
4 of 27
NXP Semiconductors
TJA1044
High-speed CAN transceiver with Standby mode
6. Pinning information
6.1 Pinning
a. SO8
b. SO8 with V
IO
c. HVSON8
Fig 2.
Pin configuration diagrams
d. HVSON8 with V
IO
6.2 Pin description
Table 3.
Symbol
TXD
GND
[1]
V
CC
RXD
n.c.
V
IO
CANL
CANH
STB
[1]
Pin description
Pin
1
2
3
4
5
5
6
7
8
Description
transmit data input
ground supply
supply voltage
receive data output; reads out data from the bus lines
not connected; TJA1044T, TJA1044GT and TJA1044GTK only
supply voltage for I/O level adapter; TJA1044x/3 variants only
LOW-level CAN bus line
HIGH-level CAN bus line
Standby mode control input
HVSON8 package die supply ground is connected to both the GND pin and the exposed center pad. The
GND pin must be soldered to board ground. For enhanced thermal and electrical performance, it is
recommended that the exposed center pad also be soldered to board ground.
TJA1044
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2017. All rights reserved.
Product data sheet
Rev. 6 — 24 August 2017
5 of 27
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