18 Dec
2005
18 Dec
'05
4:06 p.m.
On Sat, 17 Dec 2005 22:37:49 -0700
woodelf <bfranchuk at jetnet.ab.ca> wrote:
I downloaded some motorola application notes from
bitsavers.
Wow they sure had a lot of different types of TTL. I wonder
how only the 74xx became the only TTL used today?
74xx somehow became the only packing and numbering convention
used. There isn't any one single family of 74xx integrated
circuits. Manufacturers, for some reason, decided to shove the
various code letters between numbers for entirely different
silicon processes, i.e. 74Sxx 74ASxx 74Lxx 74LSxx 74Hxx ...
Has anybody ever tried to compile a list of ALL the various 74xx
logic gate families, with info about the silicon design/structure
of each?