74HCT139D NXP

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 September 1993 Product specication File under Integrated Circuits, IC06Philips Semiconductors Product specication 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 Two independent 2-to-4 decoders (LSTTL). It is specified in compliance with JEDEC Multifunction capability standard no. 7A. Active LOW mutually exclusive outputs The 74HC/HCT139 are high-speed, dual 2-to-4 line decoder/multiplexers. This device has two independent Output capability: standard decoders, each accepting two binary weighted inputs I category: MSI (nA and nA ) and providing four mutually exclusive active CC 0 1 LOW outputs (nY to nY3). Each decoder has an active 0 LOW enable input (nE). When nE is HIGH, every output is forced HIGH. The enable can be used as the data input for a 1-to-4 demultiplexer application. The 139 is identical to the HEF4556 of the HE4000B family. QUICK REFERENCE DATA GND = 0 V T = 25 C t = t = 6 ns amb r f TYPICAL SYMBOL PARAMETER CONDITIONS UNIT HC HCT t / t propagation delay C = 15 pF V = 5 V PHL PLH L CC nA to nY 11 13 ns n n nE to nY 10 13 ns 3 n C input capacitance 3.5 3.5 pF I C power dissipation capacitance per multiplexer notes 1 and 2 42 44 pF PD Notes 1. C is used to determine the dynamic power dissipation (P in W): PD D 2 2 P = C V f + (C V f ) where: D PD CC i L CC o f = input frequency in MHz i f = output frequency in MHz o 2 (C V f ) = sum of outputs L CC o C = output load capacitance in pF L V = supply voltage in V CC 2. For HC the condition is V = GND to V I CC For HCT the condition is V = GND to V - 1.5 V I CC APPLICATIONS Memory decoding or data-routing Code conversion ORDERING INFORMATION See 74HC/HCT/HCU/HCMOS Logic Package Information. September 1993 2