HEF4555B

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 HEF4555B MSI Dual 1-of-4 decoder/demultiplexer Product specification File under Integrated Circuits, IC04 January 1995 Philips Semiconductors Dual 1-of-4 decoder/demultiplexer DESCRIPTION The HEF4555B is a dual 1-of-4 decoder/demultiplexer. Each has two address inputs (A0 and A1), an active LOW enable input (E) and four mutually exclusive outputs which are active HIGH (O0 to O3). When used as a decoder, E when HIGH, forces O0 to O3 LOW. When used as a demultiplexer, the appropriate output is selected by the information on A0 and A1 with E as data input. All unselected outputs are LOW. Product specification HEF4555B MSI Fig.2 Pinning diagram. Fig.1 Functional diagram. HEF4555BP(N): 16-lead DIL; plastic (SOT38-1) HEF4555BD(F): 16-lead DIL; ceramic (cerdip) (SOT74) HEF4555BT(D): 16-lead SO; plastic (SOT109-1) ( ): Package Designator North America PINNING E A0 and A1 O0 to O3 enable inputs (active LOW) address inputs outputs (active HIGH) FAMILY DATA, IDD LIMITS category MSI See Family Specifications January 1995 2 Philips Semiconductors Dual 1-of-4 decoder/demultiplexer Product specification HEF4555B MSI Fig.3 Logic diagram (one decoder/multiplexer). TRUTH TABLE INPUTS OUTPUTS E A0 LL LH LL LH HX A1 L L H H X O0 O1 HL LH LL LL LL O2 L L H L L Notes 1....