4 Mar
2002
4 Mar
'02
2:48 a.m.
On Sun, 3 Mar 2002, William Donzelli wrote:
I have a weird TTL here - a brand I have never seen.
It is marked
FJH121/7410N witha 6920 datecode, and the logo is a diamond with an
"A" inside. Japanese, perhaps? I have seen that logo before...
Ideas?
Fujitsu? Hitachi? A good cross reference book should show who made 'FJH'
parts. Somehow I doubt they were making 7400 series logic chips in 1969,
so the 6920 number must be an in-house date code of some sort.
-Toth