TJA1042T/1J

Drivers, Receivers, Transceivers Overview

The TJA1042T/1J is a high-speed CAN transceiver designed for automotive applications, providing an interface between the CAN protocol controller and the physical two-wire bus. It supports data rates up to 5 Mbit/s in the CAN FD fast phase and complies with ISO 11898-2:2016 standards. The device operates on a VCC supply voltage of 4.5 V to 5.5 V and features a very low-current Standby mode (typical 10 μA) with bus wake-up capability. Pin 5 functions as a SPLIT output for recessive bus level stabilization. It includes overtemperature protection, undervoltage detection, and ±8 kV ESD handling.

Drivers, Receivers, Transceivers Feature Summary

• Implements the CAN physical layer defined in ISO 11898-2:2016 and SAE J2284 standards.
• Features ideal passive behavior to the CAN bus when the supply voltage is off.
• Includes a SPLIT pin output to stabilize the recessive bus level in normal mode.
• Provides fail-safe behavior including TXD dominant time-out and undervoltage detection.

Drivers, Receivers, Transceivers Applications

• High-speed CAN networks in automotive industry nodes requiring low-power modes.
• Nodes requiring wake-up capability via the CAN bus.
• Systems needing stable recessive bus levels with DC leakage to ground.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix '1J' against the manufacturer's current documentation to confirm package type and tape/reel specifications. Ensure the design utilizes the SPLIT pin configuration rather than the VIO variant. Confirm compliance with RoHS and AEC-Q100 requirements for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this variant specifically for its SPLIT pin functionality required for bus stabilization. Use variants with a VIO pin only if interfacing directly with microcontrollers operating at 3.3 V. Ensure the system design accommodates the SO8 package dimensions and thermal characteristics specified for free air conditions.

Drivers, Receivers, Transceivers Part Context

The TJA1042 belongs to NXP Semiconductors' third generation of high-speed CAN transceivers. It offers significant improvements in EMC and ESD performance compared to first- and second-generation devices like the TJA1040. The TJA1042T/1J is part of the standard TJA1042 family distinguished by its specific pin 5 configuration.

Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include other TJA1042 variants such as TJA1042BT or TJA1042CT, provided they match the required pin 5 function (SPLIT vs VIO). Verify that any substitute maintains the same SO8 package and electrical parameters.