This part is a kind of semiconductor called 74HC02.

Function of this product has Quad 2-input NOR gate.

Manufacturers : NXP Semiconductors

Image and pinout :

Some of the text within the PDF file :

74HC02; 74HCT02 Quad 2-input NOR gate Rev. 5 26 November 2015 Product data sheet 1. General description The 74HC02; 74HCT02 is a quad 2-input NOR gate. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits  Input levels:  For 74HC02: CMOS level  For 74HCT02: TTL level  Complies with JEDEC standard no. 7A  ESD protection:  HBM JESD22-A114F exceeds 2000 V  MM JESD22-A115-A exceeds 200 V  Multiple package options  Specified from 40 C to +85 C and from 40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range 74HC02D 40 C to +125 C 74HCT02D 74HC02DB 40 C to +125 C 74HC [ ... ]

74HC02 PDF Datasheet Download