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HD74HC238 - 3-to-8-line Decoder/Demultiplexer

Datasheet Summary

Description

The HD74HC238 has 3 binary select inputs (A, B and C).

If the device is enabled these inputs determine which one of the eight normally high outputs will go low.

Two active low and one active high enables (G1, G2A and G2B) are provided to ease the cascading of decoders.

Features

  • High Speed Operation: tpd (Data to Y) = 15 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs Enable G1 X X L H H H H H H H H G2A X H X L L L L L L L L G2B H X X L L L L L L L L Select C X X X L L L L H H H H B X X X L L H H L L H H A X X X L H L H L H L H Outputs Y0 L L L H L L.

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Datasheet Details

Part number HD74HC238
Manufacturer Hitachi Semiconductor
File Size 51.60 KB
Description 3-to-8-line Decoder/Demultiplexer
Datasheet download datasheet HD74HC238 Datasheet
Additional preview pages of the HD74HC238 datasheet.

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Full PDF Text Transcription

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HD74HC238 3-to-8-line Decoder/Demultiplexer Description The HD74HC238 has 3 binary select inputs (A, B and C). If the device is enabled these inputs determine which one of the eight normally high outputs will go low. Two active low and one active high enables (G1, G2A and G2B) are provided to ease the cascading of decoders.
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