This part is a kind of semiconductor called LM393P8.
Function of this product has Dual Differential Comparator.
Manufacturers : CYStech Electronics
Image and pinout :

Some of the text within the PDF file :
CYStech Electronics Corp. Dual Differential Comparator Spec. No. : C545P8 Issued Date : 2010.12.20 Revised Date : Page No. : 1/6 LM393P8 Description The LM393P8 consists of two independent voltage comparators, designed specifically to operate from a single power over a wide voltage range. Features • Single or dual supply operation • Wide operating supply range(VCC=2V~36V or ±1V to ±18V) • Input common-mode voltage includes ground • Low supply current drain ICC=0.8mA(typical) • Low input bias current Ibias=25nA(typical) • Output compatible with TTL, DTL and CMOS logic system Pin Configurations Pin1: OUT 1 Pin2: IN 1 (-) Pin3: IN 1 (+) Pin4: Gnd Pin5: IN 2 (+) Pin6: IN 2 (-) Pin7: OUT 2 Pin8: VCC LM393P8 CYStek Product Specification http:// CYStech Ele [ ... ]
LM393P8 PDF Datasheet Download
