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Chip dating (photo inside)

(1/1)

001:
Hi!

TI chip marked as
0
4
0

Is it 40 week of 1980?
 

amyk:
Pictures please...

DaJMasta:
(photo inside) *no photo*  ;D


In any case, a picture would help us, but maybe this would help as well: TI appnote szza020c

floobydust:
I've never seen vertical text for marking date codes on a PDIP. TI databook RC4558 was a new die in 1990, I think the RC4558Y. The IC goes back to 1976. Anything on the underbelly i.e. Malaysia.

001:

--- Quote from: floobydust on October 05, 2019, 07:33:51 pm ---I've never seen vertical text for marking date codes on a PDIP. TI databook RC4558 was a new die in 1990, I think the RC4558Y. The IC goes back to 1976. Anything on the underbelly i.e. Malaysia.

--- End quote ---

Yea
Malaysia TI

Vertical numbers like this

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