17 Dec
2010
17 Dec
'10
7:13 p.m.
They are interesting, but no more than weird numbers
on semicustom
devices. Motorola does the same thing, with their SC series of parts
(not MC or XC)..
I tend to come in on this side too, these funny series are
Effectively TI-supplied "house numbers".
They may be different than stock SN7400 TTL or whatever DTL in minor or
Major ways but that was an agreement between the customer and TI.
I've seen the innards of DTL and TTL based calculators, and to think that
They would work with rejects or floor sweepings is unreasonable. If
Anything I would think that the house-numbered part would have some specs tightened
And others loosened to produce something most manufacturable. And isn't
That the reason for house numbers to begin with? (e.g. not purely obfuscation)
Tim.