72XX, 73XX, and 74XX logic boards - test-drb@ccmp.vtda.org

14 Jul 2006

Tom Uban wrote:
...
  I have a friend who is cleaning out his basement and
has
 some boards which have a number of 72XX, 73XX, and 74XX
 parts on them. I'm not familiar with the 72 and 73, but
 I'm guessing they are unobtainium at this point. 
Most likely they are date codes, especially if "XX" is never greater
than 52 :-).

There are some signetics and TI and NatSemi line driver/receiver parts
with 72xx and 73xx part numbers, though.

Tim.