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SN74LVC2G17-Q1: Why is the difference between min value & max value of the positive-goning input threshold voltage of this buffer so large?

Jankel
Intellectual 731 points
Part Number: SN74LVC2G17-Q1

Why is the difference between min value & max value of the positive-goning input threshold voltage of this buffer so large?

As the following figure shows, the min value of positive-going threshold is even larger than max value of negative-going threshold.

  • 0
    TI__Guru* 97046 points
    Hello Jankel,
    These are the values that can be guaranteed across process and temperature changes for the device.

    Note that there is also a Hysteresis value (the next section down in your screenshot) that guarantees a minimum difference between VT+ and VT-. For example, if your positive-going threshold were as low as 1.9V, then the negative-going threshold has a maximum value of 1.9-0.6 = 1.3V.