please help identify this component

[petehall347]

have been trying to work this out ..
i am thinking its a LM339PT ?
14 pin one ..zoom in to read it ..

[stj]

Re: please help identify this component

looks like 339
makes sense, isnt 339 a comparater?

[petehall347]

Re: please help identify this component

its marked ezdd 339 mrc013

[petehall347]

Re: please help identify this component

yes comparator .
i thought pins 1 and 2 were shorted but looking closely at the board they are supposed to connect together .
have no idea why they did that .

[sam_sam_sam]

Re: please help identify this component

yes comparator .
i thought pins 1 and 2 were shorted but looking closely at the board they are supposed to connect together .
have no idea why they did that .

https://cdn.badcaps-static.com/pdfs/...9d61bec5c8.pdf

Are pins 4 and 6 or pins 5 and 7 tied together

[petehall347]

Re: please help identify this component

https://cdn.badcaps-static.com/pdfs/...9d61bec5c8.pdf

Are pins 4 and 6 or pins 5 and 7 tied together

no other pins are tied together

[R_J]

Re: please help identify this component

I agree with above, here is a picture of one from https://es.aliexpress.com/item/ST339...818891290.html

[petehall347]

Re: please help identify this component

was trying for hours to find a pic of one with same writing on to confirm its correct part ..i cant find one picture

[mariushm]

Re: please help identify this component

One of the lines may be the month and year of manufacturing, or batch number, it's unlikely you'll find a picture with exactly the same writing, with all rows of text the same.

With all the resistors around the chip, it's indeed most likely a comparator, and they're probably using resistors as some basic voltage dividers before the chip compares voltage thresholds or something and turns on or off those transistors (sot-223 or whatever the 3 pin footprint is)