This part is a kind of semiconductor called 74HC4515.

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

Manufacturers : NXP Semiconductors

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 www.DataSheet.net/ 74HC/HCT4515 4-to-16 line decoder/demultiplexer with input latches; inverting Product specification File under Integrated Circuits, IC06 September 1993 Datasheet pdf - http://www.co.kr/ Philips Semiconductors Product specification 4-to-16 line decoder/demultiplexer with input latches; inverting FEATURES • Inverting outputs • Output capability: standard • ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT4515 are high-speed Si-gate CMOS devices and are pin compatible with “4515” of the “4000 [ ... ]

74HC4515 PDF Datasheet Download