« previous next »
Pages: [1]   Go Down

Author Topic: Chip dating (photo inside)  (Read 747 times)

0 Members and 1 Guest are viewing this topic.

Offline 001Topic starter

  • Super Contributor
  • ***
  • Posts: 1170
  • Country: aq
Chip dating (photo inside)
« on: October 05, 2019, 09:59:54 am »
Hi!

TI chip marked as
0
4
0

Is it 40 week of 1980?
 
« Last Edit: October 05, 2019, 05:35:54 pm by 001 »
Logged
 

Offline amyk

  • Super Contributor
  • ***
  • Posts: 8400
Re: Chip dating (photo inside)
« Reply #1 on: October 05, 2019, 07:15:23 pm »
Pictures please...
Logged
 

Online DaJMasta

  • Super Contributor
  • ***
  • Posts: 2352
  • Country: us
    • medpants.com
Re: Chip dating (photo inside)
« Reply #2 on: October 05, 2019, 07:21:37 pm »
(photo inside) *no photo*  ;D


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

Offline floobydust

  • Super Contributor
  • ***
  • Posts: 7435
  • Country: ca
Re: Chip dating (photo inside)
« Reply #3 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.
Logged
 

Offline 001Topic starter

  • Super Contributor
  • ***
  • Posts: 1170
  • Country: aq
Re: Chip dating (photo inside)
« Reply #4 on: October 05, 2019, 07:55:36 pm »
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.

Yea
Malaysia TI

Vertical numbers like this

Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee