Hello Dear All,
I would like to expand the IO with using 74HC573. I have some doubt regarding the input part (U1). What will happen on Q0-Q7 if the U1-pin1 (/OE) is goes Hi and the BUS data will affected after the /OE = H? AD0-AD7 BUS might control for other device.
In the datasheet said if /OE=H, LE=L then the output is Z (High Impedance Off-state). What does it mean High Impedance Off-state? and it doesn't mention /OE=H, LE=H condition. I wonder will Q0-Q7 is open circuit while /OE=H.
Hopefully can received your advice.
Thank you,..