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TCAN1162-Q1: CAN Transceiver bit timing

Gerald
Genius 9580 points
Part Number: TCAN1162-Q1
Other Parts Discussed in Thread: TCAN1042V-Q1, TCAN1043A-Q1, TCAN1044AV-Q1

Hi Experts,

May I ask if you can help to tell me if the following CAN IC devices with PN's TCAN1162DMTRQ1, TCAN1042VDRBRQ1 and TCAN1043ADMTRQ1 (for 500kbps operating conditions) will meet bit timing requirement of minimum 1994 ns, nominal 2000 ns, max 2006 ns (that is +/- 0.3% of nominal including aging)?

Please help confirm. Thank you.

Best regards,
Gerald

  • +1
    TI__Mastermind 25165 points

    Gerald,

    The TCAN1162-Q1, TCAN1042V-Q1, and TCAN1043A-Q1 do not have integrated controllers. The oscillator timing is a consideration of the controller, not the transceiver. That being said, there are timing characteristics of the transceiver itself, though based on your question I'm not sure this is what you're asking about.

    Historically for a question like this I see it in the context of the TXD signal. On the RXD signal, the receiving controllers resynchronize on the recessive-to-dominant edges, which the transceiver passes along without protocol knowledge.

    If you're asking about transceiver symmetry, devices like this usually do not guarantee symmetry as tight as 6 ns. Usually symmetry is a few nanoseconds higher than that.

    Also, please use TCAN1044AV-Q1 instead of TCAN1042V-Q1. TCAN1044AV-Q1 is the newer 8-pin CAN component that goes in TCAN1042V-Q1 applications.

    Best,

    Danny