This part is a kind of semiconductor called HEF4040B.

Function of this product has 12-stage binary counter.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: • The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC • The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC HEF4040B MSI 12-stage binary counter Product specification File under Integrated Circuits, IC04 January 1995 Philips Semiconductors Product specification 12-stage binary counter DESCRIPTION The HEF4040B is a 12-stage binary ripple counter with a clock input (CP), an overriding asynchronous master reset input (MR) and twelve fully buffered outputs (O0 to O11). The counter advances on the HIGH to LOW transition of CP. A HIGH on MR clears all counter stages and forces all outputs LOW, independent of CP. Each counter stage is a static toggle flip-flop. Schmitt-trigger actio [ ... ]

HEF4040B PDF Datasheet Download