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SN74LVC1G373: Input Voltages Above Vcc

James Colotti
Prodigy 90 points
Part Number: SN74LVC1G373

Hello,

On the SN74LVC1G373, the datasheet indicates that the output can be driven with a negative voltage provided that the current is limited to 50 mA.

What about for voltages above Vcc?

If a level was presented to the output that was greater than Vcc, would the same 50 mA limit apply?

Thanks,

Jim

  • 0
    TI__Genius 16450 points

    Hi Jim,

    I'd like to specify that the device can have a negative voltage on the input provided that the current is limited to 50mA, which is the rating for the negative clamp diode (exceeding this rating will probably burn out the diode and short the input to ground). The output is not guaranteed to be appropriately "driven" by this voltage, all the rating states is that the device will not be immediately damaged.

    An input voltage above VCC + 0.5V is liable to immediately damage the input FETs. There is no positive clamp diode on this device for ESD protection so current does not come into play.

    Best,

    Malcolm