[sdiy] tony clark's 8 step envelope

[ASSI]

On Monday 12 April 2004 19:44, Tony Clark wrote:
>    Well I would have liked to, but unfortunately certain special
> function chips weren't available in SMT form (can you believe
> that?!).

You don't seem to have schematics on your site, but from the sound of 
the description this would be the perfect excuse to use a GAL or PLD 
instead of whatever-series gates.

> Also, from a longevity standpoint, I'm willing to bet that
> the 74 series sticks around a bit longer than the CD4K series
> (considering that only 2 mfgs make CD4K and one only makes 19 chips
> in that series).

Huh? Fairchild, On, Philips, TI and ST are all still manufacturing 
CD4000 series parts and most of it in SO packages as well. Farnell for 
one have a pretty good selection on these...

BTW, I like your "everything has to be VC" stance on things very much. 
:-)


Achim.
-- 
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