[Free] Old Data Books (Australia)
bfranchuk at jetnet.ab.ca
Wed Sep 5 22:51:37 CDT 2007
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.
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.
More information about the cctalk