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.

 

Specifications:

TYPE

DESCRIPTION

 

Category

Integrated Circuits (ICs)

Logic - Signal Switches, Multiplexers, Decoders

 

Mfr

NXP USA Inc.

 

Series

74HC

 

Package

Tube

 

Part Status

Obsolete

 

Type

Decoder/Demultiplexer

 

Circuit

1 x 3:8

 

Current - Output High, Low

5.2mA, 5.2mA

 

Voltage Supply Source

Single Supply

 

Voltage - Supply

2V ~ 6V

 

Operating Temperature

-40°C ~ 125°C

 

Mounting Type

Through Hole

74HC138N

USh2,000Price