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Schmitt trigger that can operate at negative VCC

Danilo A.
Mastermind 27600 points

Hi Team,

Our customer is looking for a schmitt trigger that can operate at negative VCC specifically at -2.7V. I have checked our product lines but it seems we don't have such device. Do we have one?

Regards,

Danilo

  • 0
    Guru 300860 points

    For logic devices, the convention is to call the most negative voltage GND.

    What are the available power supplies, and what are the voltages of the input and output?

  • 0
    TI__Guru 55665 points

    Hi Danilo,

    Could you please elaborate on your requirement?
    Did you mean to ask for a Schmitt trigger / buffer that operates with VCC = -2.7V while GND = 0V? I do not believe there are any Schmitt triggers or buffers that accept negative voltage at VCC with respect to GND. In other words, VCC can be at -2.7V when GND = -6V or something similar. This makes the voltage at VCC positive with respect to GND.

    It is also important to note that the input to these Schmitt trigger or buffer coming from other digital I/Os also needs to be negative. Hence, like Clemens mentioned, please do let us know what are the available power supplies, and what are the input and output voltages be like? Thanks.


    Regards,
    Koteshwar Rao