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SN74AHC1G00: Will the output at high when Vcc drops?

David Huang
Intellectual 2285 points
Part Number: SN74AHC1G00

Hi

I'm using the 2 input NAND of SN74AHC1G00 with 3.3V of Vcc.

The input A is powered by a pull-up resistor to 3.3V while the input B is connected directly to 3.3V.

What I want to know is that if Vcc slowly drops from 3.3V, will the output be at high?

My understanding from the datasheet is that since VIH=Vcc×0.7, the output will not be high when Vcc drops, is that correct?

Thanks

David H.