This part is a kind of semiconductor called UPC277.

Function of this product has (UPC277 / UPC393) Low Power Dual Comparators.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

Free Datasheet http://www.net/ Free Datasheet http://www.net/ Free Datasheet http://www.net/ [ ... ]

UPC277 PDF Datasheet Download