11 Apr
2008
11 Apr
'08
9:40 a.m.
Because Motorola was already using 4000 series numbers
for their TTL,
when they added CD4000 equivalent CMOS parts to their product line,
they added a leading one, making it the MC14000 series.
Ah! I'd recently been going through my "miscellaneous ICs" collection,
after getting an few hundred dollars in chips from Digikey as a refill,
as it were, of my stock of logic. I'd come to a kind of suspicion that
MC14xxx could be looked up by stripping the MC1, but it was just a
suspicion, and I think I have a few MC4xxx parts as well.
I'm glad to have that straightened out. Thank you.
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