Article View: sci.electronics
Article #17186Re: active high TTL decoders?
From: reichel
Date: Tue, 20 Jan 1987 21:28
Date: Tue, 20 Jan 1987 21:28
26 lines
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1420 bytes
---------------------Reply to mail dated 19-JAN-1987 02:26---------------------
>I'm looking for a 1-of-8 decoder (like the 74138) but with active high
>outputs. I've looked through several TTL data books, but I haven't been
>able to find one.
>....
>Is an active high decoder really all that uncommon, or was I just unlucky
>in my selection of data books to check?
>
>Thanks!
>
> -Colin Kelley ..{cbmvax,pyrnj,psuvax1,bpa}!vu-vlsi!colin
After looking through several data books, the only 1-of-8 decoder
I could find that may be of interest was a 74F538 in the Fairchild
FAST logic series. This may be overkill as it has 3-State outputs,
a polarity control to determine whether the outputs are active HIGH
or active LOW, and three enable inputs for expansion to larger
decoders. Also it is a 20-pin package. Hope this helps!
John Reichel
Digital Equipment Corp.
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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!mit-eddie!genrad!decvax!decwrl!cookie.dec.com!reichel From: reichel@cookie.dec.com Newsgroups: sci.electronics Subject: Re: active high TTL decoders? Message-ID: <7695@decwrl.DEC.COM> Date: Tue, 20-Jan-87 16:28:53 EST Article-I.D.: decwrl.7695 Posted: Tue Jan 20 16:28:53 1987 Date-Received: Wed, 21-Jan-87 03:45:53 EST Sender: daemon@decwrl.DEC.COM Organization: Digital Equipment Corporation Lines: 26