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74HC138

Part Number	74HC138
Manufacturer	Diodes
Description	3 TO 8 LINE DECODER DEMULTIPLEXER
Published	Jul 27, 2015
Detailed Description	74HC138 3 TO 8 LINE DECODER DEMULTIPLEXER Description The 74HC138 is a high speed CMOS device. The device accepts a thr...
Datasheet	74HC138 PDF File

Overview

74HC138 3 TO 8 LINE DECODER DEMULTIPLEXER Description The 74HC138 is a high speed CMOS device.
The device accepts a three bit binary weighted address on input pins A0, A1 and A2 and when enabled will produce one active low output with the remaing seven being high.
There are two active LOW enable inputs E1 and E2, and one active HIGH enable input E3.
The disabled device state results in all outputs being high.
The enable state occurs with E1 and E2 asserted low and E3 asserted high.
The multiple enable lines allow for the parallel expansion of decoders to create 4-to-16 line versions with no additional parts and 5-to-32 versions with the addition of a single inverter.
Pin Assignments Featu...

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