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Filter Times for Test Pulses

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    Last Modified: September 6, 2017

    Use the following equations to calculate the minimum debounce filter times for test pulses based on output loading.

    Table 1. Minimum Debounce Filter Times
    Output Loading Test Pulse Width ≤ 16,384 µs Test Pulse Width ≥ 16,500 µs
    Very Light Debounce filter timetest pulse width + 23 µs Debounce filter timetest pulse width + 147 µs
    Light
    Medium
    Heavy Debounce filter timetest pulse width + 271 µs

    You must confine the maximum debounce filter time for the following configurations to ensure that the debounce filter will not filter out the remaining high time of the input period. Use the following equations to calculate the maximum debounce filter times for test pulses based on output loading.

    Table 2. Miaximum Debounce Filter Times
    Output Loading Test Pulse Width ≤ 16,384 µs Test Pulse Width ≥ 16,500 µs
    Very Light Debounce filter time < test pulse period - Test pulse width - 23 µs Debounce filter time < test pulse period - test pulse width - 147 µs
    Light
    Medium
    Heavy Debounce filter time < test pulse period - test pulse width - 271 µs

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