Bought a 4GB USB stick today, and guess what...

Tony Duell ard at p850ug1.demon.co.uk
Sat Dec 1 15:58:19 CST 2007


> >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?

The 74HC4040 exists, and as expected it's a 12 bit ripple counter.

> 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


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