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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Which chip is this? 274 E16 L309
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. |
#2
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Which chip is this? 274 E16 L309
Engineer wrote in message
... 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 |
#3
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Which chip is this? 274 E16 L309
On Mar 9, 7:44*am, "N_Cook" wrote:
Engineer wrote in message ... 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? Early plotter type angular chalky print or later No, clear white letters on the black plastic, sort-of ariel fort printed in one line or transverse down the length printed one above other across the IC width, viz: 274 E16 L309 Cheers, Roger |
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