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SN65HVD232: Could SN65HVD232 been used for 5V power rails?

Gabriel Xu
Intellectual 2145 points
Part Number: SN65HVD232
Other Parts Discussed in Thread: TCAN1057-Q1

Hi Team

Customer legacy project used SN65HVD232 with 5V power rails. They found this device is not for 5V power rail until recently.

But the circuit work well in the past and no failure are reported. They want to double check with product line whether have risk to damage the device with 5V power rail?

For new design they are considering TCAN1057. I want to know are TCAN1057 PIN8 (silent pin) left float will enter silide mode am I right?

  • 0
    Guru 317750 points

    The absolute maximum ratings allow 5 V, so the device will not be damaged.
    The recommended operating conditions do not allow 5 V, so the electrical characteristics are not guranteed.

    The TCAN1057-Q1's S pin has an integrated pull-up, so leaveing it open will result in it being high, and the transceiver going into silent mode.

  • 0 in reply to Clemens Ladisch
    TI__Guru 74322 points

    Gabriel,

    What Clemens said is correct, working outside of the recommended operating conditions does not mean the device will be damaged, but none of the datasheet parameters are guaranteed at that point.

    And yes, leaving pin 8 on TCAN1057-Q1 floating will place it in a high state due to the internal pull-up. It will then be placed in silent mode.

    Please let us know if you have any other questions.

    Regards,

    Eric Hackett