Article View: sci.electronics
Article #17200Re: active high TTL decoders?
From: Colin Kelley
Date: Thu, 22 Jan 1987 02:28
Date: Thu, 22 Jan 1987 02:28
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Thanks to everyone who was kind enough to help out. The suggestions I received
fell into four categories:
1. phil@amdcad.UUCP (Phil Ngai): USE A PAL!
I guess I should have mentioned in my posting that I'm a student, and I need
this IC for a senior project. I actually had to get the EE Dept. here to
order an EPROM burner! I guess they'll have a PAL programmer in about 25
years. Maybe AMD has a school-donation program?
2. phred!loreng (Loren Gahnberg): 74HCT238
I don't have any data books here that list this IC, but I see JDR (the mail-
order place where I usually get this stuff) carries them for $1.49. Not
bad at all...
3. reichel@cookie.dec.com, kvvax4!truls (Truls Ellefsen),
herzog@leadsv.LEADS.LMSC.COM (Jordan Herzog), kontron!andyt (Andy Thornton):
74F538 or 25LS2538
These sound like pretty snazzy chips, with enables and tri-states and an
output polarity selection pin. Dave Miller mentions a price of $4.15/ea, but
I see that JDR carries the 25LS2538 for $3.74/ea, as compared with $.39 for
the plain old 74138...
4. LOTS of people: 74259
This is a neat solution because I've already got a couple spare. It's a
little slower than the others, but that's not problem. BTW it goes for $1.29.
Thanks again for all your help. I apologize if I wasn't able to respond to
your suggestions individually...
-Colin Kelley ..{cbmvax,pyrnj,psuvax1,bpa}!vu-vlsi!colin
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rutgers!cbmvax!vu-vlsi!colin From: colin@vu-vlsi.UUCP (Colin Kelley) Newsgroups: sci.electronics Subject: Re: active high TTL decoders? Message-ID: <577@vu-vlsi.UUCP> Date: Wed, 21-Jan-87 21:28:25 EST Article-I.D.: vu-vlsi.577 Posted: Wed Jan 21 21:28:25 1987 Date-Received: Thu, 22-Jan-87 20:37:21 EST References: <571@vu-vlsi.UUCP> Reply-To: colin@vu-vlsi.UUCP (Colin Kelley) Organization: Villanova Univ. EE Dept. Lines: 31 Summary: Summary of responses