Cgs synth

The difference is whether the letters are a suffix or not. The in 74HC14
indicates the type of chip, not the type of package. If letters are in the
middle of a part number, they are important. At the end they can refer to
the package, the quality and so on, where as in the middle it is actually
part of the device identifier.

7414 - plain old TTL
74C14 CMOS
74HC14 High speed CMOS
74HCT14 High speed "TTL complient" CMOS (i.e. runs of exactly 5V)

Ken

>well the reason I ask about the letters is because I used to build
>little B.E.A.M. robots. For those, I needed the exact letter to be
>correct. for example, one time I needed some 74hc14s. My local
>electronics store said "well, we've got the 7414.. those should work
>fine" I bought a bunch of them, tried them out, and no luck. They
>did NOT work. Ordered some of the 74hc14's and they worked fine.
>
>I just dont want to run into similar issues, only w/ a tun of IC's
>that ive ordered online already, then have to wait a week before I can
>start my project again.
>
>In that particular case I think it was because the HC's could process
>the signals faster.. something like that
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>The CGS Modular Synth home page: http://www.cgs.synth.net/
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>Yahoo! Groups Links
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_______________________________________________________________________
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>