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TJA1042

TJA1042

NXP Semiconductors
NXP high-speed CAN transceiver family member often used in automotive networks.
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Overview

The NXP TJA1042 is a high-speed CAN transceiver designed to provide an interface between a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. It is fully compliant with ISO 11898-2:2003 and ISO 11898-5:2007 standards, making it suitable for a wide range of automotive and industrial applications. This transceiver features a very low-current Standby mode and bus wake-up capability, optimizing power consumption.

Why Choose This Part

The TJA1042 offers excellent bus signal integrity, low electromagnetic emission (EME), and high electromagnetic immunity (EMI), ensuring robust communication in harsh environments. Its low-current Standby mode with bus wake-up capability reduces power consumption, especially beneficial for battery-powered or always-on systems. The option for direct interfacing with 3V to 5V microcontrollers via the Vio input (on specific variants) simplifies system design.

Applications

Automotive Body Control Modules
Enabling reliable CAN communication between various electronic control units (ECUs) in vehicle body electronics, such as door modules, lighting systems, and comfort functions.
Powertrain Systems
Interfacing CAN controllers in engine management systems, transmission control units, and battery management systems for electric vehicles, where high data rates and robust communication are critical.
Advanced Driver-Assistance Systems (ADAS)
Facilitating communication in ADAS applications like radar, camera, and sensor fusion modules, benefiting from its reliable performance up to 2 Mbit/s CAN FD fast phase data rates.
Industrial Control Networks
Providing robust and reliable CAN bus connectivity in factory automation, building automation, and other industrial control systems that require high immunity to electromagnetic interference.
Commercial Vehicle Networks
Implementing CAN communication in 24 V commercial vehicles, including trucks and buses, leveraging its suitability for both 12 V and 24 V systems.

Key Specifications

Type Transceiver
Duplex Half
Protocol CANbus
Data Rate 5Mbps
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Voltage - Supply 4.5V ~ 5.5V
Receiver Hysteresis 120 mV
Operating Temperature -40degC ~ 150degC
Supplier Device Package 8-SO
Number of Drivers/Receivers 1/1

Getting Started

To get started with the TJA1042, engineers can integrate it into a custom PCB design alongside a CAN controller-equipped microcontroller. Evaluate its performance using standard CAN development kits or microcontroller development boards that feature CAN communication interfaces. NXP provides comprehensive datasheets and application notes that detail connection diagrams, power supply recommendations, and thermal considerations.

Also Consider

SN65HVD230 TITexas Instruments - This is a 3.3V CAN transceiver from Texas Instruments, suitable for systems requiring lower supply voltages and offering good performance in industrial applications.
MCP2551 MCHPMicrochip Technology - The MCP2551 is a widely used high-speed CAN transceiver that provides a cost-effective solution for various CAN network designs.

Categories

Automotive > ADAS & Autonomous Driving
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