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Schmitt trigger input with cmos level

Discussion in 'Microcontrollers' started by elecLear78, Jul 5, 2017.

  1. elecLear78

    elecLear78 Member

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    i do not understand what does schmitt trigger input with cmos level. what exactly is this? Please advise.
     

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  2. Wp100

    Wp100 Active Member

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  3. crutschow

    crutschow Well-Known Member Most Helpful Member

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    CMOS logic level is nominally 1/2 the supply voltage.
    Schmitt trigger means the logic level going high is greater than the logic level going low.
    This minimizes circuit oscillations if the logic level transition is slow or multiple triggers if there's a small amount of noise on the signal.
     

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