This part is a kind of semiconductor called 74HCU04.
Function of this product has Hex inverter.
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 74HCU04 Hex inverter Product specification File under Integrated Circuits, IC06 September 1993 Philips Semiconductors Product specification Hex inverter FEATURES • Output capability: standard • ICC category: SSI GENERAL DESCRIPTION 74HCU04 The 74HCU04 is a high-speed Si-gate CMOS device and is pin compatible with low power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard no. 7A. The 74HCU04 is a general purpose hex inverter. Each of the six inverters is a single stage QUICK REFERENCE DATA GND = 0 V; Tamb = [ ... ]
74HCU04 PDF Datasheet Download
