15V 7400 logic family??

Synthaholic AKA sPEW chordman at flash.net
Fri Mar 28 00:17:24 CET 1997

On Thu, 27 Mar 1997 08:40:37 -0800, you wrote:

>I'm designing a nice and simple 2 channel sequencer and, of course, I'd
>like to make it small and easy to build.  Naturally I'm drawn to using CMOS
>digital ICs because 1) they allow supply voltage of 15V and 2) they consume
>next-to-nothing power under static conditions.  So I looked over the CMOS
>CD4000 family and found the functionality was kind of light compared to the
>classic TTL 7400 family.  
Perhaps a little lighter with respect to more hardcore computer
related binary stuff, but there are other devices that are *perfect*
for analog signal handling, such as analog multiplexors and
transmission gates.  Perhaps you could let us know what kind of
devices TTL offers that you'd like to emulate in CMOS.  Very often, a
simple combination of basic elements will yield what is desired.  And
as you say, power consumption is next to nothing, so a small increase
in package count will not seriously affect power supply design.

>Does anybody know if there is a 15V CMOS digital logic family with TTL
>74XXX functional compatibility?  
>>From what I've learned, the 74C00 family will work but its' offerings set
>is kind of small compared to the 74LS00 family.  And I think the 74HC00
>family only runs up to 6V (is this right?).  Are there others that I
>haven't considered?
>John Speth (johns at oei.com)
>Object Engineering, Inc.
>Vancouver, WA

- Scott Gravenhorst (Synthaholic)     www.concentric.net/~chordman

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