7 May
2012
7 May
'12
2:44 p.m.
On 05/07/2012 09:32 AM, Adam Sampson wrote:
David Riley<fraveydank at gmail.com> writes:
That is practically a reprint of the older by 25 years National Semi
notes on
CMOS and even older notes from RCA data back 30 years. I have both the
national and
RCA databooks from the era and yes it's there.
The older CD4000 series parts were unbuffered complementary MOS (thats
where
the C came from ) and the first 74Cxx parts were basically the same
parts in 74xx
standard pin outs.
FYI: RCA had a part that was raw uncommitted CMOS devices on die in a 12
pin package for
for special analog uses. Handy part.
All of a sudden we are talking about what I'd call not old but actually
antique tech!
Antique usually means greater than 25 years. FYI the oscillators using
CMOS gates
date back to the early 70s for extremely low power (for the era) time
keeping and
frequency synthesizer applications.
Allison
The 74HCU04 datasheet (the Philips/NXP one,
anyway) has an application
circuit for it as a "poor man's amp", running it as an inverting
amplifier.
Fairchild have an app note with further examples of this sort of
thing:
http://www.fairchildsemi.com/an/AN/AN-88.pdf
Of course, it's always possible to take a good idea too far:
http://www.p-albatross.net/kousaku-2003.htm