器件名称: 74F139SJ
功能描述: Dual 1-of-4 Decoder/Demultiplexer
文件大小: 58.56KB 共5页
简 介:74F139 Dual 1-of-4 Decoder/Demultiplexer
April 1988 Revised July 1999
74F139 Dual 1-of-4 Decoder/Demultiplexer
General Description
The F139 is a high-speed, dual 1-of-4 decoder/demultiplexer. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active LOW outputs. Each decoder has an active LOW Enable input which can be used as a data input for a 4-output demultiplexer. Each half of the F139 can be used as a function generator providing all four minterms of two variables.
Features
s Multifunction capability s Two completely independent 1-of-4 decoders s Active LOW mutually exclusive outputs
Ordering Code:
Order Number 74F139SC 74F139SJ 74F139PC Package Number M16A M16D N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
Truth Table
IEEE/IEC Inputs E H L L L L A0 X L H L H A1 X L L H H O0 H L H H H Outputs O1 H H L H H O2 H H H L H O3 H H H H L
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
1999 Fairchild Semiconductor Corporation
DS009479
www.fairchildsemi.com
74F139
Unit Loading/Fan Out
U.L. Pin Names A0 , A1 E O0–O3 Description Address Inputs Enable Inputs (Active LOW) Outputs (Ac……
