Help identifying ST chip

TChri.3 · ‎2023-03-13

I am trying to identify a chip with an ST marking. It is an SOIC-14 and appears to be identified with the markings 247. There are more markings on the package, but they vary from package to package and I suspect they are some sort of manufacturing and/or date code.

Based on the circuit the IC was found in I believe it's some sort of audio processor or transceiver.

Peter BENSCH · ‎2023-03-13

Welcome, @TChri.3, to the community!

It is the LF247DT, a quad JFET opamp.

Does it answer your question?

Regards

/Peter

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Peter BENSCH · ‎2023-03-13

Welcome, @TChri.3, to the community!

It is the LF247DT, a quad JFET opamp.

Does it answer your question?

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

TChri.3 · ‎2023-03-13

Hi @Peter BENSCH

Yes, this is exactly the info we were looking for.

Thanks!

Peter BENSCH · ‎2023-03-13

Great!

If the problem is solved, please mark this thread as answered by selecting Select as best, as also explained here. This will help other users find that answer faster.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

DA1 · ‎2023-10-29

Hi Peter, could you please explain how did you know the answer so that we can do it too? thanks.

Peter BENSCH · ‎2023-11-01

Well, this is knowledge that I have gathered over the past decades. I am happy to help with further questions of a similar nature, but I cannot guarantee it.

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