Article input voltage levels are recommended?

Question

What input voltage levels are recommended?

Answer

The ADuM144X family contains Schmitt trigger input buffers, which provide
hysteresis for noise rejection. During an input transition a Schmitt trigger
will introduce a small shoot-through current while the input is near the
mid-supply level. In devices with higher average power dissipation this is not
noticeable, but in ultra-low power parts like the ADuM144X it can be large
compared to the average supply current. It is recommended that the inputs be
driven with 0.5 V of VDD and GND to achieve the lowest power dissipation.

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