This part is a kind of semiconductor called 74HC153.
Function of this product has Dual 4-input multiplexer.
Manufacturers : Philips
Image and pinout :

Some of the text within the PDF file :
INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: • The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications • The IC06 74HC/HCT/HCU/HCMOS Logic Package Information • The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines 74HC/HCT153 Dual 4-input multiplexer Product specification File under Integrated Circuits, IC06 December 1990 Philips Semiconductors Product specification Dual 4-input multiplexer FEATURES • Non-inverting output • Separate enable for each output • Common select inputs • See ‘253” for 3-state version • Permits multiplexing from n lines to 1 line • Enable line provided for cascading (n lines to 1 line) • Output capability: standard • ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT153 are high-speed Si-gate CMOS de [ ... ]
74HC153 PDF Datasheet Download
