Newsgroups: sci.electronics
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: A 74F74?
Message-ID: <1990Apr8.000826.16803@utzoo.uucp>
Organization: U of Toronto Zoology
References: <9561@sdcc6.ucsd.edu> <37746@mips.mips.COM>
Date: Sun, 8 Apr 90 00:08:26 GMT

In article <37746@mips.mips.COM> mark@mips.COM (Mark G. Johnson) writes:
>wiped 74H practically off the face of the earth.   74S is faster and
>lower power than 74H.  And now 74F is faster still.  Life marches on.

Actually, 74F is a Really Nice family.  Not only is it fast as blazes, it
tends to eat a lot less power than 74S, and is better-behaved in all kinds
of little ways.

Not least of its virtues is that since it came from Fairchild, it has
truly exemplary datasheets, which pin down both minimum and maximum times
and do so over the full temperature and voltage range, unlike most TTL
datasheets.  I assume this was a general Fairchild characteristic, since
the F100K ECL datasheets likewise made 10K datasheets look like toilet
paper by comparison.

And now they're part of National.  Sigh.
-- 
Apollo @ 8yrs: one small step.|     Henry Spencer at U of Toronto Zoology
Space station @ 8yrs:        .| uunet!attcan!utzoo!henry henry@zoo.toronto.edu