Help identifying ST chip

[TChri.3]

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]

Welcome, @TChri.3​, to the community!

It is the LF247DT, a quad JFET opamp.

Does it answer your question?

Regards

/Peter

[DA1]

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

[Peter BENSCH]

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.

[TChri.3]

Hi @Peter BENSCH​ 

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

Thanks!

[Peter BENSCH]

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