Part Number
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HD74AC539 |
Manufacturer
|
Hitachi Semiconductor |
Description
|
Dual 1-of-4 Decoder with 3-State Output |
Published
|
Mar 23, 2005 |
Detailed Description
|
HD74AC539
Dual 1-of-4 Decoder with 3-State Output
Description
The HD74AC539 contains two inpedendent decoders. Each acc...
|
Datasheet
|
HD74AC539
|
Overview
HD74AC539
Dual 1-of-4 Decoder with 3-State Output
Description
The HD74AC539 contains two inpedendent decoders.
Each accepts two Address (A 0, A1) input signals and decodes them to select one of four mutually exclusive outputs.
A polarity control input (P) determines whether the outputs are active HIGH (P = L) or active LOW (P = H).
An active LOW input Enable (E) is available for data demultiplexing; data is routed to the selected output in non-inverted form in the active LOW mode or in inverted form in the active HIGH mode.
A HIGH signal on the active LOW Output Enable ( OE) input forces the 3-state outputs to the high impedance state.
Feature
• Outputs Source/Sink 24 mA
HD74AC539
Pin Arr...
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