UNISONIC TECHNOLOGIES CO., LTD

U74HCT138

CMOS IC

www.unisonic.com.tw

1 of 5

Copyright © 2014 Unisonic Technologies Co., Ltd

QW-R502-642.B

3-TO-8 LINE DECODERS /

DEMULTIPLEXERS



DESCRIPTION

The U74HCT138 decodes a three−bit Address to 1−of−8

active−low outputs.

This device features three Chip Select inputs, two active−low and

one active−high, to facilitate the demultiplexing, cascading and

chip−selecting functions.

The demultiplexing function is accomplished by using the

Address inputs to select the desired device output. One of the Chip

Selects is used as a data input while the other Chip Selects are held

in their active states.



FEATURES

* Operate from 4.5V to 5.5V

* Low Input Current:1.0uA Max

* Low Power Consumption: 8μA Max

* Inputs are TTL voltage compatible

SOP-16

TSSOP-16

SSOP-16



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

U74HCT138L-S16-T

U74HCT138G-S16-T

SOP-16

Tube

U74HCT138L-S16-R

U74HCT138G-S16-R

SOP-16

Tape Reel

U74HCT138L-R16-T

U74HCT138G-R16-T

SSOP-16

Tube

U74HCT138L-R16-R

U74HCT138G-R16-R

SSOP-16

Tape Reel

U74HCT138L-P16-T

U74HCT138G-P16-T

TSSOP-16

Tube

U74HCT138L-P16-R

U74HCT138G-P16-R

TSSOP-16

Tape Reel