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TLIN1021A-Q1: 220pf on LIN bus

Chuqiang Wen
Expert 5825 points
Part Number: TLIN1021A-Q1

Hi Expert, 

May I know the reason why we recommend 220pF on LIN bus as a commander? While 1nf is recommended from other supplier's 1021 commander. 

Thanks!

Ethan Wen

  • +1
    TI__Mastermind 26806 points

    Ethan,

    For rare cases it depends on the application, but 220 pF will always be acceptable for international standards. International standard ISO 17987-4 requires nominally 220 pF on each node, regardless of whether it is a commander or responder node. However, SAE J2602-1 does allow up to about 2.5 nF on only the commander node. Aside from that, placing 1 nF on the nodes would be a violation of the LIN spec.

    In both standards, 220 pF is acceptable for every node.

    Best,

    Danny