1 Dec
2007
1 Dec
'07
2:52 p.m.
Subject: Re: Bought a 4GB USB stick today, and guess what...
From: ard at p850ug1.demon.co.uk (Tony Duell)
Date: Sat, 01 Dec 2007 21:58:19 +0000 (GMT)
To: cctalk at classiccmp.org
None of my data books list a 74HC4004 either. Does it even exist?
I have data but in 1973 it was already replaced by 4024 a 7 stage
binary counter.
And of
course a 4040 from Intel is a 4-bit microprocessor, from RCA it's
a 12 bit CMOS counter. I can never rememebr what the 4004 is in the
4000-eries CMOS, it's sufficiently rare that none of the data books I
have to hand list it.
ur kiddin. Just prefix 74{c, hc, hct} and the 4xxx number and you
get it's function and pinout.
The 74HC4040 exists, and as expected it's a 12 bit ripple counter.
That and the 4060 (14stge counter) are still widely used.
However for us
who kept those old and valuable manuals like Signetics
8xxx series and the RCA databook series (my 1973 set was some 8 books)
I do have data for RCA 4xxx and a lot of other oddities.
I haev never thrown out a databook. Darn it, I've got an Ericson databook
for Dekatrons and Trochotroncs, etc. And a valve databook from the 1940s
that has printed on almost every page 'Supply of this device cannot be
guaranteed due to the current situatio' (that is, of course, WW2). -tony
2 Dec
2 Dec
2:19 p.m.
And of course a
4040 from Intel is a 4-bit microprocessor, from RCA it's
a 12 bit CMOS counter. I can never rememebr what the 4004 is in the
4000-eries CMOS, it's sufficiently rare that none of the data books I
have to hand list it.
ur kiddin. Just prefix 74{c, hc, hct} and the 4xxx number and you
get it's function and pinout. Whats scary is that I have old databooks to support
the old parts
I HAVE and use.
So do I. Valves, CRTs, DTL chips, and so on.... I even keep old component
catalogues so if I find some part marked with, say, an RS components
stock number I can look it up and find the specs.
-tony
3 Dec
3 Dec
1:20 a.m.
New subject: Whence the CMOS 4004 / was Re: Bought a 4GB USB stick today, and guess what...
Tony Duell wrote:
I have data but in 1973 it was already replaced by 4024 a 7 stage
binary counter.
YEs, the 4004 exited, but I susepct the 74HC(T)4004 never did. So trying
to look it up doesn't help...
FWIW, the 1972 RCA COS/MOS databook, which is pretty early for the 4000 CMOS
series, does not present data pages for a 4004 (nor a 4003 or 4005), nor are
they listed in the numerical index.
However, there is an application note "COS/MOS MSI Counter and Register Design
and Applications" (no date) which discusses the 4004 (CD4004A) "7-stage
ripple-carry binary counter" extensively.
>And of course a 4040 from Intel is a 4-bit
microprocessor, from RCA it's
>a 12 bit CMOS counter. I can never rememebr what the 4004 is in the
>4000-eries CMOS, it's sufficiently rare that none of the data books I
>have to hand list it.
ur kiddin. Just prefix 74{c, hc, hct} and the 4xxx number and you
get it's function and pinout.
None of my data books list a 74HC4004 either. Does it even exist?
6229
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ajp166＠bellatlantic.net -
ard＠p850ug1.demon.co.uk -
hilpert＠cs.ubc.ca