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Help Identifying Vintage Logic ICs
RetroHackShack:
I was recently lucky enough to find some old (early 70s) wire wrap boards loaded with interesting ICs. I am pretty sure these in particular are a series of logic chips, but I can't find any information on them. Does anyone recognize them?
Update: Here are the ones I have been able to confirm so far.
55001 = 7400
55002 = 7402
55003 = 7404
55005 = 7410
55007 = 7430
55008 = 7442
55010 = 7450
55011 = 7474
55019 = 74179
55023 = 73153
55024 = 74161
55028 = 74164
55029 = 7454
55032 = 7401
55034 = 7440
Benta:
Well, they're from Fairchild and seem to be aerospace parts.
schmitt trigger:
If you can't find any information, you might send them to user Noopy for some die pictures!
By the date code, could they be some ancient DTL or RTL logic?
EDIT; my previous assumption may be unlikely, as Fairchild's DTL family was the 930-series.
coppice:
Interesting. The sequential numbers make them seem like some kind of chip set, yet one stands out for its plastic package.
RetroHackShack:
The other chips on this particular board are 74 series logic, so I am assuming these are logic chips, too. If anyone is interested in some vintage gold ceramic IC porn here is a picture of one of the other boards that is full of Intel 1101 memory. 8)
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