6 Sep
2007
6 Sep
'07
4:51 a.m.
Tony Duell wrote:
Don;'t you mean 7483 here? The 7486 is a quad XOR
gate, pinout similar to
the 8400, and with corner supply pins.
Yes I did. Don't ask why I thinking 86?
The 74283 is a 4-bit adder with a more sane pinout
(and corner supply pins).
And faster too I think. I was looking at some old TTL
databooks (bitsavers)
and noticed it was two two bit adders glued into the same package. That was
lots of transistors back then.
The ones I come acorss most often are the 7490, 7492, 7493 counters.
I don't
see them often, a TTL digital clock (with nixes) comes to mind
using them that may have been some early 70's magazine.
-tony
Odd how the old stuff is coming back for projects. You don't see
I built a PeeCee project from scratch using ... , just "I added blinking
lights to my case" as todays project.
Ben alias woodelf.