On Mon, 12 Dec 2011 09:42:14 -0800
Chris Albertson <[email protected]> wrote:
> Thanks. The findchips.com suggestion was good. Seems the "74AC"
> part really is not available but there is a "CD74ACxxx" part that
> looks good.
The CD at the front just means it's from TI instead someone else.
The parts are the same.
> The problem is, the PCB is already made so it is hard to adapt the
> design to other parts. If I were designing from scratch I'd only
> select parts that were stocked in high volume by most distributers
Not really. Using SMD parts instead of DIL is easy to do. They have
the same pinout, just half the size. So a little bit of glue, a few
wires and a steady hand are all that is needed to fit one of those in.
Alternatively, there are break out boards from SOP/SSOP/SOIC to DIL
(but they cost more than it's worth)
Attila Kinali
--
Why does it take years to find the answers to
the questions one should have asked long ago?
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