5V and early ICs / was Re: TRADIC

[Roy J. Tellason]

On Sunday 09 December 2007 05:58, Christian Corti wrote:
> There are earlier ones. As you might know, the SN74xx family started with
> the SN740, SN741 etc. (only three digits!). After TI expanded this family
> they went over to four digit part numbers and just appended a zero to the
> already available parts. Thus the SN740 became the SN7400, the SN741 the
> SN7410 and so on. I have a TI databook somewhere that has the old part
> numbers.

That's the first I've ever heard that one,  which explains the somewhat 
puzzling number sequences,  and how they got that way...

-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin