This part is a kind of semiconductor called 74HC00.
Function of this product has QUADRUPLE 2-INPUT NAND GATES.
Manufacturers : Diodes
Image and pinout :

Some of the text within the PDF file :
NEW PRODUCT 74HC00 QUADRUPLE 2-INPUT NAND GATES Description The 74HC00 provides provides four independent 2-input NAND gates with standard push-pull outputs. The device is designed for operation with a power supply range of 2.0V to 6.0V. The gates perform the Boolean function: Pin Assignments Y = A • B or Y = A + B Features • Wide Supply Voltage Range from 2.0V to 6.0V • Sinks or Sources 4mA at VCC = 4.5V • CMOS Low Power Consumption • Schmitt Trigger Action at All Inputs • ESD Protection Exceeds JESD 22 200-V Machine Model (A115-A) 2000-V Human Body Model (A114-A) Exceeds 1000-V Charged Device Model (C101C) • Range of Package Options SO-14 and TSSOP-14 • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) • Halogen and Antimony Free. “Green” Device ( [ ... ]
74HC00 PDF Datasheet Download
