TJA1042T

CAN/TJA1042T

Overview

The TJA1042 high-speed CAN transceiver provides an interface between a Controller Area Network CAN protocol controller and the physical two-wire CAN bus. The transceiver is designed for high-speed CAN applications in the automotive industry, providing the differential transmit and receive capability to a microcontroller with a CAN protocol controller.

The TJA1042 belongs to the third generation of high-speed CAN transceivers from Semiconductors, offering significant improvements over first- and second-generation devices such as the TJA1040. It offers improved ElectroMagnetic Compatibility EMC and ElectroStatic Discharge ESD performance, and also features:

* Ideal passive behavior to the CAN bus when the supply voltage is off

* A very low-current Standby mode with bus wake-up capability

* /3 and TJA1042TK/3 can be interfaced directly to microcontrollers with supply voltages from 3 V to 5 V

The TJA1042 implements the CAN physical layer as defined in the current ISO11898 standard ISO11898-2:2003, ISO11898-5:2007 and the pending updated version of ISO 11898-2:2016. Pending the release of the updated version of ISO11898-2:2016 including CAN FD and SAE J2284-4/5, additional timing parameters defining loop delay symmetry are specified. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s.

These features make the TJA1042 an excellent choice for all types of HS-CAN networks, in nodes that require a low-power mode with wake-up capability via the CAN bus.

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## Features

### General

* Fully ISO 11898-2:2003 and ISO 11898-5:2007 compliant

* Timing guaranteed for data rates up to 5 Mbit/s in the CAN FD fast phase

* Suitable for 12 V and 24 V systems

* Low ElectroMagnetic Emission EME and high ElectroMagnetic Immunity EMI

* VIO input on TJA1042T/3 and TJA1042TK/3 allows for direct interfacing with 3 V to 5 V microcontrollers

* SPLIT voltage output on TJA1042T for stabilizing the recessive bus level

* Available in SO8 package and leadless HVSON8 package 3.0 mm × 3.0 mm with improved Automated Optical Inspection AOI capability

* Dark green product halogen free and Restriction of Hazardous Substances RoHS compliant

* AEC-Q100 qualified

### Predictable and fail-safe behavior

* Very low-current Standby mode with host and bus wake-up capability

* Functional behavior predictable under all supply conditions

* Transceiver disengages from the bus when not powered up zero load

* Transmit Data TXD dominant time-out function

* Bus-dominant time-out function in Standby mode

* Undervoltage detection on pins VCC and VIO

### Protections

* High ESD handling capability on the bus pins ±8 kV

* High voltage robustness on CAN pins ±58 V

* Bus pins protected against transients in automotive environments

* Thermally protected

## Features