In the datasheet, under the "Power-Down Sequence" section, it says:
"The ADV7842 supplies can be deasserted simultaneously as long as a higher rated supply does not go below a lower rated supply."
Is there risk of damage if a higher-rated supply only momentarily drops below a lower-rated supply during shut-off? We plan on letting them all shut-off at once (when the main system power is shut off), but it will not be controlled, so it's possible for there to be quick spikes.
For sure, we are following the recommended power-*up* sequence. Just not controlling the power-*down* sequence.