Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!sun!amdcad!pepsi!phil
From: phil@pepsi.amd.com (Phil Ngai)
Newsgroups: sci.electronics
Subject: Re: A 74F74?
Message-ID: <29798@amdcad.AMD.COM>
Date: 9 Apr 90 19:56:21 GMT
References: <9561@sdcc6.ucsd.edu> <37746@mips.mips.COM> <1990Apr8.000826.16803@utzoo.uucp> <1990Apr8.061809.6501@ns.network.com>
Sender: news@amdcad.AMD.COM
Reply-To: phil@pepsi.AMD.COM (Phil Ngai)
Organization: Advanced Micro Devices, Inc. Sunnyvale CA
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In article <1990Apr8.061809.6501@ns.network.com> logajan@ns.network.com (John Logajan) writes:
|We don't use a lot of line termination, but I have
|seen enough cases where it is sometimes advisable (hint, if the line is
|...
|The new kid on the block is 74FCT and 74FC (F.A.C.T.) which are almost as
|fast as 74F, but are really CMOS based familes (with 74FCT being voltage
|level compatible with TTL.)  Naturally their power requirements are less
|still than 74F.

I haven't used 74FC but I have used 74AC parts and in my experience,
the 74AC parts are much worse than any other TTL compatible parts,
including the F series, in requiring line termination.

Are FC parts better? What is the difference between FC and AC?

--
Phil Ngai, phil@amd.com		{uunet,decwrl,ucbvax}!amdcad!phil
The War on Drugs is the modern day Inquisition.