This part is a kind of semiconductor called LM2901.

Function of this product has LOW POWER QUAD VOLTAGE COMPARATORS.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

LM2901 Low-power quad voltage comparator Features ■ Wide single supply voltage range or dual supplies for all devices: +2 V to +36 V or ±1 V to ±18 V ■ Very low supply current (1.1 mA) independent of supply voltage (1.4 mW/comparator at +5 V) ■ Low input bias current: 25 nA typ. ■ Low input offset current: ±5 nA typ. ■ Input common-mode voltage range includes negative rail ■ Low output saturation voltage: 250 mV typ. (IO = 4 mA) ■ Differential input voltage range equal to the supply voltage ■ TTL, DTL, ECL, MOS, CMOS compatible outputs Description This device consists of four independent precision voltage comparators, which are designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible. These [ ... ]

LM2901 PDF Datasheet Download