HD74AC539 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74AC539

Dual 1-of-4 Decoder with 3-State Output

Hitachi -> Renesas Electronics 

HD74AC539

Dual 1-of-4 Decoder with 3-State Output

Description

The HD74AC539 contains two inpedendent decoders. Each accepts two Address (A0, 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

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