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/HCT139 Dual 2-to-4 line decoder/demultiplexer Product specification File under Integrated Circuits, IC06 September 1993
Philips Semiconductors Product specification Dual 2-to-4 line decoder/demultiplexer 74HC/HCT139 FEATURES GENERAL DESCRIPTION • Demultiplexing capability The 74HC/HCT139 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard no. 7A. • Two independent 2-to-4 decoders • Multifunction capability • Active LOW mutually exclusive outputs The 74HC/HCT139 are high-speed, dual 2-to-4 line decoder/multiplexers.
Philips Semiconductors Product specification Dual 2-to-4 line decoder/demultiplexer 74HC/HCT139 PIN DESCRIPTION PIN NO. SYMBOL NAME AND FUNCTION 1, 15 1E, 2E enable inputs (active LOW) 2, 3 1A0, 1A1 address inputs 4, 5, 6, 7 1Y0 to 1Y3 outputs (active LOW) 8 GND ground (0 V) 12, 11, 10, 9 2Y0 to 2Y3 outputs (active LOW) 14, 13 2A0, 2A1 address inputs 16 VCC positive supply voltage Fig.1 Pin configuration. Fig.2 Logic symbol. (a) (b) Fig.3 IEC logic symbol.
Philips Semiconductors Product specification Dual 2-to-4 line decoder/demultiplexer Fig.4 Functional diagram. FUNCTION TABLE INPUTS nE nA0 OUTPUTS nA1 nY0 nY1 nY2 nY3 H X X H H H H L L L L L H L H L L H H L H H H H L H H H H L H H H H L Notes 1. H = HIGH voltage level L = LOW voltage level X = don’t care Fig.5 Logic diagram (one decoder/demultiplexer).
Philips Semiconductors Product specification Dual 2-to-4 line decoder/demultiplexer 74HC/HCT139 DC CHARACTERISTICS FOR 74HC For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI AC CHARACTERISTICS FOR 74HC GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (°C) TEST CONDITIONS 74HC SYMBOL PARAMETER +25 min. typ. −40 to +85 max. min. max. −40 to +125 min. UNIT VCC WAVEFORMS (V) max.
Philips Semiconductors Product specification Dual 2-to-4 line decoder/demultiplexer 74HC/HCT139 DC CHARACTERISTICS FOR HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI Note to HCT types The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications. To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
Philips Semiconductors Product specification Dual 2-to-4 line decoder/demultiplexer 74HC/HCT139 AC WAVEFORMS (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.6 Waveforms showing the address input (nAn) to output (nYn) propagation delays and the output transition times. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.7 Waveforms showing the enable input (nE) to output (nYn) propagation delays and the output transition times.