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SN55LVDS32, SN65LVDS32

Dan LaChance
Expert 1770 points


Is it OK to apply inputs to these RS-422 receivers when the power is off?  I think this is termed as cold sparing in the datasheet.

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    TI__Intellectual 1910 points

    Dan,

    You are correct about cold sparing. In cold sparing, voltage may be applied to an I/O before and during power up. When the device is powered off, Vcc must be clamped to ground and the I/O voltages applied must be within the specified operating conditions in the datasheet.

    Regards,

    Gui