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Article #6377

Re: Why are 8 bit TTL binary counters so hard to find???

#6377
From: Jon Sreekanth
Date: Sat, 15 Aug 1992 16:34
28 lines
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In article <1992Aug14.033406.19291@julian.uwo.ca> wlsmith@valve.heart.rri.uwo.ca (Wayne Smith) writes:


   In article <JON_SREE.92Aug13214342@world.std.com> jon_sree@world.std.com (Jon Sreekanth) writes:

   >Why is it important to get an 8 bit counter in one package, as 
   >opposed to tying two 4-bit counters together ? 

   I already have a prototype made of 4 independant 16 bit counters, and
   working with 4 bit counters (74F161) are a pain.

   What I really would like is 4 addressable independant 16 bit counters 
   running off a single clock (no load register needed) with a common
...

I guess it's one of those things that falls through the cracks. It's
too big and too specialized for a 74xx series part. A PLD may be 
expensive or slow or consume too much power. A low end gate array might
be over-kill. Oh, well. In a production setting, even a handful of
74xx series glue chips can be fairly closely packed, using surface mount
parts and using both sides of the board. Directly bonding the die onto
the PC board is also becoming more popular. 

/ Jon Sreekanth

Assabet Valley Microsystems, Inc.           |  Fax and PC products
5 Walden St #3, Cambridge, MA 02140         |  (617) 876-8019
jon_sree@world.std.com                      |
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Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!world!jon_sree
References: <1992Aug13.212738.26715@julian.uwo.ca> <JON_SREE.92Aug13214342@world.std.com> <1992Aug14.033406.19291@julian.uwo.ca>

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Newsgroups: sci.electronics
Path: arc1-ca.pugleaf.net!sparky!uunet!decwrl!world!jon_sree
From: jon_sree@world.std.com (Jon Sreekanth)
Subject: Re: Why are 8 bit TTL binary counters so hard to find???
In-Reply-To: wlsmith@valve.heart.rri.uwo.ca's message of Fri, 14 Aug 1992 03:34:06 GMT
Message-ID: <JON_SREE.92Aug15113446@world.std.com>
Sender: jon_sree@world.std.com (Jon Sreekanth)
Organization: The World
References: <1992Aug13.212738.26715@julian.uwo.ca> <JON_SREE.92Aug13214342@world.std.com>
 <1992Aug14.033406.19291@julian.uwo.ca>
Distribution: na
Date: Sat, 15 Aug 1992 16:34:46 GMT
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