TJA1042 High-Speed CAN Transceiver

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For security on TJA1042, TJA1044, TJA1049, go to Secure CAN TJA1152, for higher data rates on these devices, go to CAN SIC TJA1462.

The TJA1042 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, providing the differential transmit and receive capability to (a microcontroller with) a CAN protocol controller.

The TJA1042 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.

The TJA1042 offers improved electromagnetic compatibility (EMC) and electrostatic discharge (ESD) performance, it 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, and variants with a VIO pin can be interfaced directly with microcontrollers with supply voltages from 3.3 V to 5 V.

The TJA1042 implements the CAN physical layer as defined in ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s. The TJA1042B and TJA1042C feature shorter propagation delay, supporting larger network topologies.

Data Sheet

Product Details

Block Diagram

TJA1042

Get diagram PDF

Features

General Features

Fully ISO 11898-2:2016, SAE J2284-1 to SAE J2284-5 and SAE J1939-14 compliant
Timing guaranteed for data rates up to 5 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), according to proposed EMC Standards IEC 62228-3 and SAE J2962-2
Variants with a VIO pin allow for direct interfacing with 3.3 V to 5 V microcontrollers
Shorter propagation delay on the TJA1042B and TJA1042C variants supports larger network topologies
SPLIT voltage output on TJA1042T and TJA1042CT for stabilizing the recessive bus level
Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)
AEC-Q100 qualified

Predictable and Fail-Safe Behavior

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 loads)
Transmit Data (TXD) dominant time-out function
Bus-dominant time-out function in Standby mode
Undervoltage detection on pins V_CC and V_IO

Protection

High ESD handling capability on the bus pins (±8 kV)
High voltage robustness on CAN pins (±58 V)
Bus pins protected against transients in automotive environments
Thermally protected

Product Longevity Program

These products are included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The TJA1042B and TJA1042C are included in the 15-year program

Part numbers include: TJA1042BT, TJA1042CT, TJA1042T, TJA1042TK.

Comparison Table

Part Number	New Generation Recommendation
TJA1042T,112	TJA1044GT/1Z
TJA1042T,118	TJA1044GT/1Z
TJA1042T/1J	TJA1044GT/1Z
TJA1042T/3,112	TJA1044GT/3Z
TJA1042T/3,118	TJA1044GT/3Z
TJA1042T/3/1J	TJA1044GT/3Z
TJA1042T/3/CM,118	TJA1044GT/3Z
TJA1042T/CM,118	TJA1044GT/1Z
TJA1042TK/3,118	TJA1044GTK/3Z
TJA1042TK/3/1J	TJA1044GTK/3Z

Buy/Parametrics

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