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HD74AC539

Hitachi Semiconductor
Part Number 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...
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HD74AC539
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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