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TLIN1021A-Q1: compatible with ISO 14230 / K-line

O'Mellin
Expert 6065 points
Part Number: TLIN1021A-Q1
Other Parts Discussed in Thread: TLIN1027-Q1

Team, Can you please advise if the TLIN1021A is compliant with ISO14230 / K-line <10kbps like the TJA1021 seems to be ?

olivier

  • 0
    TI__Guru 74252 points

    Olivier,

    No LIN transceiver can be totally compliant to the K-Line specification, for several reason, but the main being the internal pull-up resistance. For K-Line specification, the internal pull-up termination at each node is required to be 100k, while for LIN it is required to be 20k to 60k. From a system-level perspective, a LIN transceiver would still work because the 100k requirement for K-Line is meant to satisfy the overall K-bus impedance, but a LIN transceiver will never pass compliance for a K-Line transceiver. This is true for the TLIN1021A-Q1 as well as the TJA1021

    A LIN transceiver can be compatible with K-Line applications though, and the TLIN1027-Q1 in TI's portfolio is indeed compatible with K-Line applications. This is because the TLIN1027-Q1 allows data rates down to DC without asserting any fault condition. 

    Please let me know if you have any other questions.

    Regards,