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I have tried to google the different type of code and I cant really confirm that what I suspect I found is actually the right thing so I might want to see if something can confirm my finidng.

enter image description here

I suspect this to be a OP-AMP IC from STM from looking up the code number 464. This board is reading RFID chips and connect to STM32 which I suspect my finding is correct.

Is it possible that this is the releated datasheet of this chip? https://www.st.com/en/amplifiers-and-comparators/ts464.html

max246
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2 Answers2

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It matches the chip you indicated, TS464CPT enter image description here

Reference for the image

Alinik
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    oh great! yeah same :) do you know what 838 means? Is that a package size ? I couldnt figure out why some have 736 and some 838 – max246 Aug 21 '23 at 12:56
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    @max246 Likely a lot number. If it's not documented in the datasheet then it's generally not import for identification, but only for the internal tracking by the manufacturer. – nanash1 Aug 21 '23 at 14:06
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    Please make sure to [reference](https://meta.stackexchange.com/questions/325015/do-the-referencing-guidelines-apply-to-images-as-well-as-text) any images in your answer if they are not your own (I see the LCSC watermark). A simple link under the image ought to suffice. – Tom Carpenter Aug 21 '23 at 17:43
  • @max246 Digit codes may be date codes, in which case "838" could be 38th week of 2018 (or 2008, etc.). – Tim Williams Aug 22 '23 at 07:47
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This logo definitely is ST, and a manufacturer will not apply the same marking to different devices. So this datasheet, which confirms "646C", must be the correct one.

CL.
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  • thanks, I was sure the logo was that but I wasnt sure if it was some sort of RF decoder ( which in a way it is from reading a reverse engineering ) so I am glad I can figure out it is a OP-AMP :) – max246 Aug 21 '23 at 12:55