Quad LIN Commander Transceiver with LIN Commander Controller

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Block Diagram

SJA1124 Block Diagram

SJA1124 Block Diagram


General Features

  • Four LIN commander channels:
    • LIN commander controller
    • LIN transceiver
    • LIN commander termination consisting of a diode and a pull-up resistor.
  • Very low current consumption in Low-Power mode with wake-up via SPI or LIN
  • Option to control an external voltage regulator via the INHN output
  • Bus signal shaping optimized for baud rates up to 20 kBd
  • SPI for communicating with the microcontroller:
    • SPI used for configuration, control, diagnosis and LIN data transfer
    • Flexible SPI length from 3 bytes to 18 bytes
    • Output status pin signals SPI operational state
  • Interrupt output pin: interrupts can be configured individually
  • Facilitates synchronous LIN frame transmission across multiple SJA1124 devices
  • VIO input for direct interfacing with 3.3 V and 5 V microcontrollers

LIN Commander Controllers

  • Independent per LIN channel:
    • Baud rate
    • Operating mode
    • Status and interrupt
  • Complete LIN frame handling and transfer
  • One interrupt per LIN frame
  • Follower response timeout detection
  • Programmable break length
  • Automatic sync field generation
  • Programmable stop bit length
  • Hardware parity generation
  • Hardware or software checksum generation
  • Fault confinement
  • The fractional baud rate generator


  • Excellent ElectroMagnetic Immunity (EMI)
  • Very high ESD robustness: ±6 kV according to IEC61000-4-2 for pins LIN1 to LIN4 and BAT
  • The bus terminal and battery pin protected against transients in the automotive environment (ISO 7637)
  • LIN dominant timeout function
  • Thermal protection


  • LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A
  • ISO 17987-3:2016, ISO 17987-4:2016 (12 V LIN)
  • SAE J2602-1

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The SJA1124 is included in the 15-year program

Part numbers include: SJA1124AHG, SJA1124BHG.


Quick reference to our documentation types.

3 documents

Design Resources

Design Files


2 hardware offerings


1 software file

  • Middleware

    SJA1124 LIN TRCV Autosar 4.4 version

Note: For better experience, software downloads are recommended on desktop.


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