Cmos Latch Octal

Arthur Harrison theremin1 at worldnet.att.net
Sat Nov 14 07:23:56 CET 1998


The 7400 TTL parts are becoming expensive and scarce.
(So are DIP packages, and those damn "SOP," "TSSOP,"
and similarly microscopic parts are no good for my aging eyes!)

If you wanna do new designs, I strongly suggest HCMOS.
You can get free HCMOS data books from Texas Instruments,
among other manufacturers.  You can't get free TTL books from
TI anymore, though, since that stuff is so "mature."

Note:  The HCMOS parts have relatively fast edges, and can
cause some noise problems in mixed (analog/digital)
systems.

The 4000 CMOS series, fortunately, is still alive and
well, and perhaps Motorola will still send out free data books.

There is a classic "TTL Cookbook" by Don Lancaster.  It is listed by
Amazon at:
http://www.amazon.com/exec/obidos/ASIN/0672210355/qid%3D911013615/002-181899
5-0462042

Lancaster's pages are at:
http://www.tinaja.com/index.html

-Art


-----Original Message-----
From: JWBarlow at aol.com <JWBarlow at aol.com>
To: owner-synth-diy at mailhost.bpa.nl <owner-synth-diy at mailhost.bpa.nl>;
synth-diy at mailhost.bpa.nl <synth-diy at mailhost.bpa.nl>
Date: Friday, November 13, 1998 6:57 PM
Subject: Re: RE: Cmos Latch Octal


>
>In a message dated 11/13/98 10:19:15 AM, johns at oei.com wrote:
>
>>Can somebody run down a quick brief list of all the 74xyz attributes (like
>>
>>power supply range and draw, fanout, input requirements)?
>>
>
>OR, does a 74xyz "Cookbook" exist which I (and others) should know about?
It
>could be quite handy for DIY.
>
>JB
>




More information about the Synth-diy mailing list