[sdiy] Keyboard decoder and 74373

[Ingo Debus]

Karl Ekdahl wrote:
> Hi, i'm building a keyboard decoder and i want to
> latch the current key in a 74373 for use when the gate
> gets low. But i'm having trouble interfacing the
> 74373, i'm using a 4060 counter and thought that maybe
> it could be some difficulties using on 40- and 74-
> series chip? All ICs are driven by a +5v supply.

When you're using HC or HCT logic (i.e. 74HC373 or 74HCT737) there are 
no problems with interfacing with standard CMOS (40...) logic. Of 
course you must run them at 5v.

Ingo