11 Dec
2007
11 Dec
'07
10:48 a.m.
On Sun, 9 Dec 2007, Brent Hilpert wrote:
Well, that makes sense to some degree, the 740 numbers
conceivably following
on the 730 RTL numbers, but I have never seen or heard as you suggest.
It sounds a little more like a convolution of TI's developments. The
1965 catalog (which appears to be a full-line catalog) declares the 5400
series as new, it includes earlier/older IC series, and makes no mention of
either 740 or 7400 numbers or series. The implication from this catalog is
that TI went to the 4-digit numbers with the original and initial release
of the 5400 series. All the mentioned 5400 numbers end in 0.
It seems that I was wrong with the three-digit 74 series. Ok, I will
simply list all TI digital IC series that I have found in two old data
books:
1. American Miniature and Microminiature Electronic Assemblies Data Annual
(1963-64)
Series 51 RCTL logic: SN510, SN511, SN512 and SN513. (and that's it...)
2. Semiconductor Integrated Circuits (Texas Instruments, August 1965)
Series 51 and 51R RCTL:
Three-digit numbers, newer parts have four-digits, e.g.
SN510, SN5101
SN511, SN5111, SN5112, SN5113
Series 53 and 73 Modified-DTL:
This is were TI seems to have introduced the four-digit numbers, e.g.
SN530 / SN7300
SN531 / SN7310
Apparently there was no three-digit 73 series, but a SN530 and SN7300
are identical parts (except for the temperature range)
Minuteman series DTL (e.g. SN337A, SN341A, SN359A)
Series 54 and 74 TTL:
Has always had four-digit numbers (SN5400, SN7400)
Series 70 ECL (SN7000, SN7001)
Series 1500 and 1580 DTL
Series 1700 RTL
Christian