SN74HCS138-Q1 Automotive Qualified 3- to 8-Line Decoder/Demultiplexer with

Schmitt-Trigger Inputs

1 Features

• AEC-Q100 Qualified for automotive applications:

– Device temperature grade 1:

– Device HBM ESD Classification Level 2

– Device CDM ESD Classifcation Level C6

• Wide operating voltage range: 2 V to 6 V

• Schmitt-trigger inputs allow for slow or noisy input

signals

• Low power consumption

– Typical input leakage current of ±100 nA

• ±7.8-mA output drive at 6 V

2 Applications

• Memory device selection with shared data bus

• Reduce required number of outputs for chip select

applications

• Route data

3 Description

The SN74HCS138-Q1 is a three to eight decoder with

gated by any of the strobe inputs, they are all forced

into the high state. When the outputs are not disabled

by the strobe inputs, only the selected output is low

while all others are high.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

SN74HCS138PW-Q1

TSSOP (16)

5.00 mm × 4.40 mm

SN74HCS138D-Q1

SOIC (16)

9.90 mm × 3.90 mm

SN74HCS138BQB-Q1 WQFN (16)

3.50 mm × 2.50 mm

SN74HCS138DYY-

Q1(2)

SOT-23-THN (16) 4.20 mm × 2.00 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(2)

Package is in Preview.

Input Voltage

Schmitt-trigger

CMOS Input

Response

Waveforms

Standard

CMOS Input

Response

Waveforms

Input Voltage

Input Voltage

Time

Time

Input Voltage

Waveforms

Low Power

Noise Rejection

Supports Slow Inputs

Time

Time

Time

Time

Benefits of Schmitt-trigger inputs

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SN74HCS138-Q1

SCLS811B – SEPTEMBER 2020 – REVISED MARCH 2021

Copyright © 2021 Texas Instruments Incorporated

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SN74HCS138-Q1

SCLS811B – SEPTEMBER 2020 – REVISED MARCH 2021

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