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SN65LVDS31: Termination question on unused buffers

Art Del Castillo1
Prodigy 205 points
Part Number: SN65LVDS31
Other Parts Discussed in Thread: SN55LVDS31

Tool/software:

To Whom it may concern:

  Can you please advice on how to properly terminate unused buffers on a SN55LVDS31, SN65LVDT33D (differential transmitter/receiver, respectively) devices?

Thank you!

Art

  • 0
    TI__Guru* 77101 points

    Hi Art,

    Unused output pins can be left floating like the Y/Z pins on the SN55LVDS31. The Input A pins have an internal pull down resistor on the SN55LVDS31 so they are already biased low. This means you can leave it floating.

    For SN65LVDT33D The A/B input signals have a fail safe feature so you can just leave those pins floating as well. Output Y pins can be left floating.

    -Bobby