HEF4555B

HEF4555B 1-of-4 decoder/demultiplexer Rev. 5 — 18 November 2011 Product data sheet 1. General description The HEF4555B contains two 1-of-4 decoders/demultiplexers. Each has two address inputs (nA0 and nA1, an active LOW enable input (nE) and four mutually exclusive outputs which are active HIGH (nY0 to nY3). When used as a decoder, nE when HIGH, forces nY0 to nY3 LOW. When used as a demultiplexer, the appropriate output is selected by the information on nA0 and nA1 with nE as data input. All unselected outputs are LOW. It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input. 2. Features and benefits  Fully static operation  5 V, 10 V, and 15 V parametric ratings  Standardized symmetrical output characteristics  Specified from 40 C to +85 C  Complies with JEDEC standard JESD 13-B 3. Applications  Code conversion  Address decoding  Demultiplexing: when using the enable input as data input 4. Ordering information Table 1. Ordering information All types operate from 40 C to +85 C. Type number Package Name Description HEF4555BP DIP16 plastic dual in-line package; 16 leads (300 mil) HEF4555BT SO16 plastic small outline package; 16 leads; body width 3.9 mm Version SOT38-4 SOT109-1 NXP Semiconductors 5. Functional diagram HEF4555B 1-of-4 decoder/demultiplexer 2 1A0 3 1A1 DECODER 1Y0 4 1Y1 5 1Y2 6 1Y3 7 1 1E 14 2A0 13 2A1 DECODER 2Y0 12 ...