For TPS2111A, if D1 is not driven by a logic gate and is pulled down and connected to a power supply, would that cause a problem? The datasheet doesn’t specify whether they’re Schmitt trigger inputs.
regards
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The D lines may be connected to GND or IN1 either directly or through a resistor.
I don't think they are schmitt trigger input although they have a hysteresis between off and on thresholds.
They are still cmos and ttl compatible.