How I build a marshall 6100 footswitch?

[Renegadrian]

Hi everyone, a friend of mine just purchased a Marshall 6100 amp, and asked me to build him a proper footswitch. It should be easy, 3 mom fs, and a couple of uncommon (for me) chips that aren't easy to find (I see aliexpress has some, both smd or th but delivery time is...ali-no-express)

Do you think these chips can be replaced? do you know what chips would fit for the job? it's hc574 and hc86, as in this SCHEM HERE.

[PRR]

Try 74HC574.

DigiKey is showing a thousand+ in-hand at a buck a pop.
https://www.digikey.com/en/products/detail/texas-instruments/CD74HC574E/475946

Also try the base number 74574, because I don't see any reason this job needs HC series CMOS, high speed pedal??

[Renegadrian]

Yeah the chip itself is buck a pop, while the shipping (18 euros from germany) is f-u-c-k a pop!!! no way!!!

better try find them locally, even if overpriced I'd get them with no waiting time.