NXP USA Inc. TJA1051T/3/1J

TJA1051T/3/1J High-Speed CAN Transceiver Half 8-SO

The TJA1051T/3/1J from NXP Semiconductors is a high-speed CAN (Controller Area Network) transceiver that serves as the critical interface between a CAN protocol controller and the physical differential bus lines in industrial and automotive applications.   This device is fully compliant with the ISO 11898-2 standard, ensuring robust and reliable communication in electrically harsh environments.   It is designed to provide excellent EMC (Electromagnetic Compatibility) and ESD (Electrostatic Discharge) performance, making it a cornerstone for building robust network nodes in automotive body control modules, industrial automation systems, and other networked machinery requiring real-time data exchange.

Key Electrical Characteristics

The TJA1051T excels in its electrical robustness and performance.   It supports a wide common-mode voltage range of -12V to +12V, allowing it to handle significant ground shifts and noise interference typical in automotive environments.   The device features very low electromagnetic emissions and high immunity to electromagnetic interference (EMI), alongside high ESD protection of up to 8 kV (IEC 61000-4-2).   It operates at data rates up to 1 Mbaud and includes key protection features such as overtemperature protection, undervoltage detection on both VCC and the bus pins, and a passive behavior when unpowered, ensuring it does not load down the bus.

Application Scenarios

The primary application of the TJA1051T/3/1J is within automotive networks, including CAN-based body control modules (e.g., for windows, seats, lighting), gateway modules, and comfort systems.   It is equally critical in industrial automation for connecting PLCs, sensors, and actuators on a robust network, as well as in medical equipment, elevator control, and building automation where reliable serial communication is essential.   Its robustness makes it the go-to solution for any application requiring a dependable physical layer for a CAN bus system that must operate reliably despite severe electrical noise and challenging conditions.

Alternative CAN Bus Interface IC Part

● SN65HVD251: A 3.3V CAN transceiver from Texas Instruments offering similar functionality for low-power microcontroller-based systems.

● MCP2551: A high-speed CAN transceiver from Microchip Technology providing a standalone physical layer interface compatible with the CAN protocol.

● ATA6561: An advanced CAN transceiver from Microchip offering very low power consumption and a silent mode for diagnostic purposes.

● TCAN332: A classic CAN transceiver from TI with fault protection features, suitable for a broad range of industrial applications.