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SN74AUP1G126 Input Hysteresis

Inderjit Bains
Expert 2745 points
Other Parts Discussed in Thread: SN74AUP1G126

The datasheet mentions that the SN74AUP1G126 has input hysteresis.  However, no values are given, unlike the 74AUP1G17.  What are the min-max values for 1.2V, 1.8V, and 3.3V?

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    TI__Mastermind 46480 points

    All AUP devices have schmitt trigger action. Not the same as a true schmitt trigger that will have no input rise and fall limits and have the hyst speced in the datasheet.

    Schmitt trigger action means there will be some hysteresis. usually about 50mv but it is not specd or tested. They will have a rise and fall spec for their inputs that will be more relaxed than a regular input but not as relaxed as a true schmitt trigger.

    The AUp1G17 is a true schmitt trigger while AUP1G126 is not.