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TCAN1042-Q1: CAN bus connection

user4979989
Intellectual 2800 points
Part Number: TCAN1042-Q1
Other Parts Discussed in Thread: TCAN1043

Hi Sir,

May I know if we connect TCAN1042 and TCAN1043 CAN bus together, but 1042 is 5V, 1043 is 8V, is there any issue?

Thank you.

  • +1
    TI__Guru 53575 points

    Hi User,

    To confirm, you are using 8V for the Vsup supply of TCAN1043 correct? Both CAN transceivers will also need a 5V supply for the Vcc input. This Vcc supply is what is used to drive the CAN bus. It is ok if the Vcc supplies are slightly different or have a mild ground offset. The Vsup supply for TCAN1043 is primarily used to power the low-power receiver while the device is in sleep mode. The CAN driver is not supplied by Vsup. 

    Let me know if you have any more questions.

    Regards,
    Eric Schott