TJA1042T/3/1J

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1. Describe

The TJA1042T/3/1J high-speed CAN transceiver provides an interface between a controller area network (CAN) protocol controller and a physical two-wire CAN bus. Specifically designed for high-speed CAN applications in the automotive industry, this transceiver provides differential transmit and receive capabilities for microcontrollers (with) CAN protocol controllers. The TJA1042 is part of NXP Semiconductors' third-generation high-speed CAN transceiver and offers 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:

    1. Ideal passive behavior of the CAN bus when the supply voltage is off

    2. Very low current standby mode with bus wake-up capability

    3. The TJA1042T/3 and TJA1042TK/3 can be directly connected to microcontrollers with a supply voltage of 3 V to 5 V

The TJA1042 implements the CAN physical layer as defined in ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5. This implementation enables reliable communication at data rates up to 5 Mbit/s in the fast phase of CAN FD. These features make the TJA1042 an excellent choice for all types of HS-CAN networks for nodes requiring low power modes with wake-up capability over the CAN bus.

2. Feature

    1. Compliant with ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5

    2. Guaranteed timing for CAN FD fast phase data rates up to 5 Mbit/s

    3. For 12 V and 24 V systems

    4. Low Electromagnetic Emissions (EME) and High Electromagnetic Immunity (EMI)

    5. VIO input on TJA1042T/3 and TJA1042TK/3 allows direct connection of 3 V to 5 V microcontroller

    6. SPLIT voltage output on TJA1042T for stabilizing recessive bus levels

    7. Available in SO8 and leadless HVSON8 packages (3.0 mm × 3.0 mm) Improved Automatic Optical Inspection (AOI) capabilities

    8. Dark green products (halogen free and Restriction of Hazardous Substances (RoHS) conform to)

    9. Compliant with AEC-Q100

3. Predictable and fail-safe behavior

    1. Very low current standby mode with host and bus wake-up capability

    2. Predictable functional behavior under all supply conditions

    3. Transceiver disconnects from bus when not powered (zero load)

    4. Transmit data (TXD) explicit timeout function

    5. Bus dominant timeout function in standby mode

    6. Brown-out detection on VCC and VIO pins

4. Protect

    1. High ESD handling capability on bus pins (±8 kV)

    2. High voltage robustness on CAN pins (±58 V)

    3. Protects bus pins from transients in automotive environments

    4. Thermal protection

5. Pin configuration

6. Pin Description