Visitor II

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Help identifying chip marked 311 / EZ619

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WhatsApp Image 2026-03-03 at 7.30.49 PM.jpeg

hello, I don't reconiaze the PN number of attached picture

Other hardware

AScha.3Best answer

Super User

Its an LM311 , by ST:

LM311D/DT SO-8 Tube or Tape & reel marking : 311

https://cdn-reichelt.de/documents/datenblatt/A200/CD0000107.pdf

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311

EZ619

Looks like the magic smoke left. I can't find anything about it. Maybe it's a custom part for a manufacturer. What is this from?

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AScha.3Best answer

Super User

Its an LM311 , by ST:

LM311D/DT SO-8 Tube or Tape & reel marking : 311

https://cdn-reichelt.de/documents/datenblatt/A200/CD0000107.pdf

If you feel a post has answered your question, please click on " Best Answer ".