TJA1042T/3/1J

Drivers, Receivers, Transceivers Overview

The TJA1042T/3/1J is a high-speed CAN transceiver designed for automotive applications, providing an interface between a microcontroller and the physical two-wire CAN bus. It supports data rates up to 5 Mbit/s in the CAN FD fast phase and complies with ISO 11898-2:2016 and SAE J2284 standards. The device operates on a VCC supply voltage of 4.5 V to 5.5 V and features a VIO pin for direct interfacing with 3.3 V to 5 V microcontrollers. Key electrical parameters include a typical standby current of 5 μA, normal mode recessive current of 5 mA, and dominant current of 45 mA. It offers ±8 kV ESD protection and withstands ±58 V on bus pins.

Drivers, Receivers, Transceivers Feature Summary

• Supports reliable communication at data rates up to 5 Mbit/s in the CAN FD fast phase
• Features very low-current Standby mode with host and bus wake-up capability
• Provides ideal passive behavior to the CAN bus when the supply voltage is off
• Includes TXD dominant time-out and bus-dominant time-out functions for fail-safe operation

Drivers, Receivers, Transceivers Applications

• High-speed CAN networks requiring low-power modes with wake-up capability
• Automotive systems operating on 12 V and 24 V architectures
• Nodes interfacing directly with 3.3 V or 5 V microcontrollers via the VIO pin

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and pin configuration. Ensure compatibility with system voltage requirements, particularly regarding the VIO pin connection for 3.3 V logic levels. Confirm that the component meets AEC-Q100 qualification standards required for automotive integration.

Drivers, Receivers, Transceivers Selection Notes

Select this variant when direct interfacing with 3.3 V to 5 V microcontrollers is required without external level shifting. The presence of the VIO pin distinguishes it from non-VIO variants where the input/output levels are fixed to 5 V. Consider the SOIC-8 package for standard surface-mount assembly needs.

Drivers, Receivers, Transceivers Part Context

The TJA1042 belongs to NXP Semiconductors' third generation of high-speed CAN transceivers. It succeeds earlier generations like the TJA1040 by offering improved electromagnetic compatibility (EMC) and electrostatic discharge (ESD) performance. This iteration specifically targets modern automotive networks demanding higher data rates and lower power consumption.

Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements within the same family include TJA1042BT and TJA1042CT. Note that these variants differ in pin 5 functionality; TJA1042T/3/1J uses a VIO pin, whereas TJA1042CT utilizes a SPLIT pin for common-mode stabilization.