74HC221

[PHILL]

Hi Carl ! Can I use 74HC123 ? Thanks!

[Carl-NC]

I'm gonna guess, and say 'yes'. The pinout & truth tables are identical, the only difference is the 74HC123 is retriggerable. I think that's fine, as long as the input is not double-pulsed before the output goes low, which should never happen. I probably have a '123 to try it out.

- Carl

[PHILL]

Thanks Carl! I will take two ,123.

[PHILL]

74HC221

Thanks Carl! I will take two ,123.