[sdiy] CMOS chip questions

[David G. Dixon]

> well i meant in a situation where you are trying to replace 74 TTL with a
> higher voltage CMOS compatible TTL.
> 
> i suppose i should just learn to design with actual 5 volt 74LS

I think the most convenient way to go when mixing digital and analog is
simply to add a 5V supply to the board for digital IC's with 78L05.  Then
you can use whatever digital IC's are best for a given application, and you
don't need a stand-alone 5V supply.

Of course, the gurus may beg to differ.  I'd be interested in hearing the
arguments against this notion.