This part is a kind of semiconductor called 74HC4538.

Function of this product has Dual retriggerable precision monostable multivibrator.

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/HCT4538 Dual retriggerable precision monostable multivibrator Product specification File under Integrated Circuits, IC06 September 1993 Philips Semiconductors Product specification Dual retriggerable precision monostable multivibrator FEATURES • Separate reset inputs • Triggering from leading or trailing edge • Output capability: standard • ICC category: MSI • Power-on reset on-chip GENERAL DESCRIPTION The 74HC/HCT4538 are high-speed Si-gate CMOS devices and are pin compatible with “4538” of the “4000B” series. [ ... ]

74HC4538 PDF Datasheet Download