Engineer
Guest
Mon Mar 08, 2010 9:17 pm
Hi, all.
In a recently acquired pile of vintage junk (well not all junk, some
good pieces!) I found a stick of 12 vintage IC's. They are all 14 pin
DIP's marked "274 E16 L309". Does anyone know what these are? A
google search came up with nothing relevant.
Thanks for all replies,
Cheers,
Roger
PS. address shown is fake for anti-spam, please use analogdino at(ta-
boy) rogers dot(ty-as-they) com(e), suitably decoded.
PPS. I hope this is not a double post - tried yesterday but found no
sign of it on the NG.
N_Cook
Guest
Tue Mar 09, 2010 1:44 pm
Engineer <junk2007_at_rogers.com> wrote in message
news:7aa755ca-ff8b-4a6a-bd84-7b52387dac33_at_t41g2000yqt.googlegroups.com...
Quote:
Hi, all.
In a recently acquired pile of vintage junk (well not all junk, some
good pieces!) I found a stick of 12 vintage IC's. They are all 14 pin
DIP's marked "274 E16 L309". Does anyone know what these are? A
google search came up with nothing relevant.
Thanks for all replies,
Cheers,
Roger
PS. address shown is fake for anti-spam, please use analogdino at(ta-
boy) rogers dot(ty-as-they) com(e), suitably decoded.
PPS. I hope this is not a double post - tried yesterday but found no
sign of it on the NG.
What is the likely date ?
Early plotter type angular chalky print or later
printed in one line or transverse down the length
--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://diverse.4mg.com/index.htm
Engineer
Guest
Tue Mar 09, 2010 6:39 pm
On Mar 9, 7:44 am, "N_Cook" <dive...@tcp.co.uk> wrote:
Quote:
Engineer <junk2...@rogers.com> wrote in message
news:7aa755ca-ff8b-4a6a-bd84-7b52387dac33_at_t41g2000yqt.googlegroups.com...
Hi, all.
In a recently acquired pile of vintage junk (well not all junk, some
good pieces!) I found a stick of 12 vintage IC's. They are all 14 pin
DIP's marked "274 E16 L309". Does anyone know what these are? A
google search came up with nothing relevant.
Thanks for all replies,
Cheers,
Roger
PS. address shown is fake for anti-spam, please use analogdino at(ta-
boy) rogers dot(ty-as-they) com(e), suitably decoded.
PPS. I hope this is not a double post - tried yesterday but found no
sign of it on the NG.
What is the likely date ?
No idea, when did DIP's get replaced by surface mount?
Quote:
Early plotter type angular chalky print or later
No, clear white letters on the black plastic, sort-of ariel fort
Quote:
printed in one line or transverse down the length
printed one above other across the IC width, viz:
274
E16
L309
Cheers,
Roger
