This part is a kind of semiconductor called 74HC154.

Function of this product has 4-to-16 line decoder/demultiplexer.

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/HCT154 4-to-16 line decoder/demultiplexer Product specification File under Integrated Circuits, IC06 September 1993 Philips Semiconductors Product specification 4-to-16 line decoder/demultiplexer FEATURES • 16-line demultiplexing capability • Decodes 4 binary-coded inputs into one of 16 mutually exclusive outputs • 2-input enable gate for strobing or expansion • Output capability: standard • ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT154 are high-speed Si-gate CMOS devices and are pin compatible with low power Sc [ ... ]

74HC154 PDF Datasheet Download