This part is a kind of semiconductor called 74HCT7541.
Function of this product has Octal Schmitt trigger buffer/line driver; 3-state.
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/HCT7541 Octal Schmitt trigger buffer/line driver; 3-state Product specification Supersedes data of March 1988 File under Integrated Circuits, IC06 December 1990 Philips Semiconductors Product specification Octal Schmitt trigger buffer/line driver; 3-state FEATURES • Non-inverting outputs • Schmitt trigger action on all data inputs • Output capability: bus driver • ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT7541 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are [ ... ]
74HCT7541 PDF Datasheet Download
