Fairchild 74F139 Data Handbook
Summary
The 74F139 is a high-speed dual 1-of-4 Decoder/Demultiplexer essential for advanced digital circuit design. This device employs two independent decoders, each capable of generating four mutually exclusive active LOW minterms or functioning as a demultiplexer across variable inputs. The corresponding manual provides comprehensive technical specifications, including absolute maximum ratings, electrical characteristics, and detailed functional descriptions, making it an invaluable reference for electronics engineers building complex logic networks that require signal isolation and decoding capabilities.
Page 1 Text Content
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74F 139 D al 1-o f-4 D eco er/D em ltip lexer
April 1988 Revised July 1999
74F139 Dual 1-of-4 Decoder/Demultiplexer General Description Features The F139 is a high-speed, dual 1-of-4 decoder/demulti- Multifunction capability plexer. The device has two independent decoders, each
Two completely independent 1-of-4 decoders
accepting two inputs and providing four mutually exclusive
Active LOW mutually exclusive outputs
active LOW outputs. Each decoder has an active LOW Enable input which can be used as a data input for a 4-out- put demultiplexer. Each half of the F139 can be used as a function generator providing all four minterms of two vari- ables.
Ordering Code: Order Number Package Number Package Description 74F139SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74F139SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F139PC N16E 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 Outputs
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
© 1999 Fairchild Semiconductor Corporation DS009479 www.fairchildsemi.com
Page Summary Contents For Fairchild 74F139 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 5 |
| File Size | 59.48 KB |
| Published | May 20, 2026 |
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Frequently Asked Questions
What is the primary function of the F139 device?
The F139 functions as a high-speed dual 1-of-4 decoder/demultiplexer.
What are the required operating voltage specifications?
The supply voltage must be maintained within the range of +4.5V to +5.5V.
How can I utilize this device in a demultiplexing application?
You can use the active LOW Enable (E) input as the data input for the 4-output demultiplexer application.
Is this component suitable for life support systems?
No, Fairchild requires explicit written approval before using these products in any life support devices or systems.