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SN65HVD1050: can't stable communication with 15 nodes

Part Number: SN65HVD1050

hello TI,

      We meet SN65HVD1050 can't stable communication with 15 nodes in one bus ,  Try to drop rate from 1Mbps to 500kbps, it still can't stable communication.

we see iso11898 standard , the maxim nodes is 30, we want to know what's root cause will lower this nodes, could you provide your suggest?

  • Hi Lina,

    Is communication working with a lower number of nodes? What about at lower rates? Are you able to observe the CANH, CANL, and RXD signals of a failing node on an oscilloscope when the communication issue occurs? That may help us to better understand the root cause.

    How are all the nodes connected together? I.e., is it a linear topology (each node daisy chained to the next one), star topology (each node connecting to a common point), etc.? How is termination implemented? And, what component are placed on the CAN lines at each node (resistors, capacitors, etc.)?

    Regards,
    Max