[Test-Equipment] MC8309P

[Stewart Bryant]

A friend and I are trying to repair an old HP counter (HP 5345A). One of
its
faults is a failed HP 1820-0610 , which has the commercial equivalent
MC8309P.
Does anyone on this list know a reasonably priced source of MC8309P?.

Alternatively, I understand that this is a TTL part of some description,
and I
was wondering if it could be functionally replaced with one or more
modern
faster parts. However I do not have a data sheet, and cannot find one on
the
web. Does anyone on the list know where I can find a datasheet?

Many thanks

Stewart