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Hello,
On the customer system, input signal toggle during Vcc=0V.
Is this condition acceptable?
Does output stay in 0V when input toggles with 0V and 3.3V during Vcc=0V?
Best regards, Katsu
This is allowed; see [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)?
When VCC = 0 V, the outputs are not 0 V but high impedance; see [FAQ] What does 'partial power down' or 'Ioff' mean in the datasheet?