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Article #6219Re: Why are 8 bit TTL binary counters so hard to find???
From: Joel Kolstad
Date: Fri, 14 Aug 1992 04:18
Date: Fri, 14 Aug 1992 04:18
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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 ? Here's a good reason: 'Cuz I want to be able to preset it to some number. Recently I needed 2 12 bit counters (16 would have been even better, but 12 sufficied)... and, of course, nobody makes a double 4-bit (or single 8-bit) pressettable counter. Yes, I know this would need >20 pins, but that's OK -- there are already 22 pin .3" parts out there! You're right that a PAL/GAL/etc. would work, but I ended up using 6 74LS161s instead... 6*.40=2.40 is much cheaper than 3*(>$2)! ---Joel Kolstad
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!usc!wupost!darwin.sura.net!mips!news.cs.indiana.edu!umn.edu!doug.cae.wisc.edu!kolstad From: kolstad@cae.wisc.edu (Joel Kolstad) Subject: Re: Why are 8 bit TTL binary counters so hard to find??? Organization: U of Wisconsin-Madison College of Engineering Distribution: na Date: 13 Aug 92 23:18:32 CDT Message-ID: <1992Aug13.231832.29191@doug.cae.wisc.edu> References: <1992Aug13.212738.26715@julian.uwo.ca> <JON_SREE.92Aug13214342@world.std.com> Lines: 16