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SN74HC138D

The Texas Instruments SN74HC138D is a 3-Line to 8-Line Decoder/Demultiplexer from the HC technology family. It operates within a voltage range of 2V to 6V and a temperature range of -40°C to 85°C.

✓ Total Stock: 365,271 pcs

$ Price Range: $0.42

SN74HC138D Available from 6 distributors

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SN74HC138D Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Mounting Type	Surface Mount
Number of Channels	1
Operating Temperature Range	-40°C to 85°C
Propagation Delay	15 ns
Supply Current	80µA

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SN74HC138D Description

Short technical summary and product information.

The SN74HC138D from Texas Instruments is a high-speed 3-line to 8-line decoder/demultiplexer designed for memory decoding and data-routing applications. It belongs to the HC technology family and offers a wide operating voltage range from 2V to 6V.

Key electrical characteristics include a maximum supply current of 80µA, a typical propagation delay of 15ns, and an output drive capability of ±4mA at 5V. The device features active-low outputs and incorporates three enable inputs, which simplify cascading or data reception tasks. Its low input current of a maximum of 1µA contributes to its overall efficiency.

This decoder/demultiplexer is suitable for high-performance systems where minimizing decoding delay is critical. The SN74HC138D is available in a surface-mount SOIC package. Its operating temperature range is -40°C to 85°C.

SN74HC138D Quick Information

Product Type: 3-Line to 8-Line Decoder/Demultiplexer

Series: SN74HC138

Canonical Name: Texas Instruments SN74HC138D 3-Line to 8-Line Decoder/Demultiplexer

Subcategory: Logic

SN74HC138D Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

SN74HC138D Estimated Pricing

Qty	Low	High
1+	$0.42	$0.42

Estimated market price range - modelled values for guidance only, not live distributor offers.

SN74HC138D Features

3-Line to 8-Line Decoder/Demultiplexer
HC Technology Family
Wide 2V to 6V Operating Voltage
Fast 15ns Propagation Delay
SOIC Surface Mount Package

SN74HC138D Applications

Used for address decoding in memory systems.
Ideal for data demultiplexing in digital circuits.
Suitable for signal routing in microcontroller interfaces.
Applied in logic function generation.

SN74HC138D FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating voltage range of the SN74HC138D?

2V to 6V.

What package is the SN74HC138D available in?

SOIC (D) package.

What is the operating temperature range of the SN74HC138D?

-40°C to 85°C.

What is the typical propagation delay of the SN74HC138D?

15 ns.

What is the maximum supply current of the SN74HC138D?

80 µA.

What is the output drive capability of the SN74HC138D?

±4 mA at 5V.

What logic family does the SN74HC138D belong to?

HC (High-Speed CMOS).