This part is a kind of semiconductor called 4011B.

Function of this product has Quadruple 2-input NAND gate.

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 HEF4011B gates Quadruple 2-input NAND gate Product specification File under Integrated Circuits, IC04 January 1995 Philips Semiconductors Product specification Quadruple 2-input NAND gate DESCRIPTION The HEF4011B provides the positive quadruple 2-input NAND function. The outputs are fully buffered for highest noise immunity and pattern insensitivity of output impedance. HEF4011B gates Fig.2 Pinning diagram. HEF4011BP(N): HEF4011BD(F): Fig.1 Functional diagram. HEF4011BT(D): 14-lead DIL; plastic (SOT27-1) 14-lead DIL; ceramic (cerdip) (SOT73) 14-lead SO; plastic (SOT [ ... ]

4011B PDF Datasheet Download