Will the ADUM144X run at 1.8V? I know it is only specified to 2.5Vmin but will it work at 1.8V for for low data rates (<200k)?
The quick answer is no.
There can be unreliable operation at supply voltages below the minimum, especially at high temperature. You may not see it on the bench unless you know what to look for, so we can't support operation at those voltages.
Sorry the news is not better.
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