TJA1145AT/0Z

Drivers, Receivers, Transceivers Overview

The TJA1145AT/0Z 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 ISO 11898-2:2016 compliant partial networking with selective wake-up capabilities. The device operates on a battery supply voltage (VBAT) ranging from 4.5 V to 28 V and a VCC supply of 4.5 V to 5.5 V. It ensures reliable communication at data rates up to 5 Mbit/s during the CAN FD fast phase. In Sleep mode, current consumption is as low as 4 µA to 86 µA depending on temperature and voltage conditions.

Drivers, Receivers, Transceivers Feature Summary

• Supports autonomous bus biasing to minimize RF emissions and maintain bus stability in offline states.
• Features advanced ECU power management with very low-current Standby and Sleep modes.
• Includes robust protection against electrostatic discharge and short circuits on CAN bus pins.
• Provides SPI interface for configuration, control, and diagnostic status retrieval.

Drivers, Receivers, Transceivers Applications

• High-speed CAN networks in automotive ECUs requiring partial networking.
• Systems needing local and remote wake-up functionality via WAKE pin or CAN patterns.
• Applications demanding low power consumption while maintaining battery connection.

Drivers, Receivers, Transceivers Procurement Notes

Verify the package type matches the design requirements, as the TJA1145AT uses an SO14 plastic small outline package. Confirm that the specific ordering suffix corresponds to the desired variant, noting that standard versions differ from FD variants regarding CAN FD passive behavior. Ensure compatibility with the target microcontroller's I/O voltage levels before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component when ISO 11898-2:2016 compliance and partial networking are required. Consider the HVSON14 package if thermal performance and board space are critical constraints. Verify that the application benefits from the improved EMC performance compared to previous generations. Ensure the system can support the necessary SPI interface for full feature utilization.

Drivers, Receivers, Transceivers Part Context

The TJA1145AT/0Z belongs to the TJA1145A family of high-speed CAN transceivers. It is part of NXP's portfolio aimed at optimizing automotive network power management. This series integrates CAN physical layer functions with advanced power control features, distinguishing it from basic transceivers by offering selective wake-up and autonomous biasing capabilities.

Drivers, Receivers, Transceivers Replacement Considerations

The TJA1145A is not recommended for new designs; NXP recommends using the TJA1445 or TJA1465 instead. These newer models offer CAN FD or SIC capabilities with similar partial networking features. Check pinout and register compatibility if migrating from the TJA1145A to ensure seamless integration without hardware redesign.