>I know that it is a "one-shot". What does that
>mean?
An external resistor and capacitor set a time constant. One-shots
produce output pulses, the width set by the time constant, in response
to certain changes in their inputs.
> The pinouts in the Chip Directory are
>no help.
"Well duh". Try a manufacturer's website, i.e. National Semiconductor's
Application Note #366, "Designer's Encyclopedia of One Shots", at
http://www.national.com/an/AN/AN-366.pdf
or Fairchild Semiconductor for the 74123 data sheet
http://www.fairchildsemi.com/pf/DM/DM74123.html
If you have a nearby university, you'll be able to find the 74123 in
just about any TTL databook from the last 25 years or so. While you're
there, you might find a copy of Horowitz and Hill's _The Art of Electronics_.
Note that the 74LS123 is incompatible, for many applications, with the
non-LS 74123. This is the boundary between analog and digital technology...
--
Tim Shoppa Email: shoppa_at_trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Received on Sat Jul 10 1999 - 16:50:34 BST