Mfr Part #:

SN74HC138DR

The Texas Instruments SN74HC138DR is a 3-line to 8-line decoder/demultiplexer. It operates over a wide voltage range and features active low outputs.

✓ Total Stock: 21,023 pcs

$ Price Range: $0.17

SN74HC138DR Available from 9 distributors

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Fe Components ✓ Non-Authorised Inventory information	10,000 pcs On Request	10000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Components Technology Group, Inc. ✓ Non-Authorised Inventory information	3,303 pcs On Request	3303 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Partservice ✓ Non-Authorised Inventory information	1,650 pcs On Request	1650 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Braun Electronic Components ✓ Non-Authorised Inventory information	1,500 pcs On Request	1500 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
RAD ✓ Non-Authorised Inventory information	1,500 pcs On Request	1500 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	1,158 pcs On Request	1158 pcs	On Request	1	On Request	On Request	1210+5	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	1,077 pcs On Request	1077 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Spartce Electronics. ✓ Non-Authorised Inventory information	750 pcs On Request	750 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Bristol Electronics ✓ Non-Authorised Inventory information	85 pcs On Request	85 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

SN74HC138DR Description

Short technical summary and product information.

The SN74HC138DR from Texas Instruments is a 3-line to 8-line decoder/demultiplexer designed for high-performance memory decoding and data routing applications. It features a wide operating voltage range from 2V to 6V, making it versatile for various systems.

Key electrical characteristics include a low maximum supply current of 80 µA and a typical propagation delay of 15 ns, ensuring efficient operation. The outputs can drive up to 10 LSTTL loads, and it offers ±4 mA output drive at 5V. The device has low input current of 1 µA maximum and incorporates three enable inputs for simplified cascading or data reception. The selected output is active low.

This component is suitable for applications such as LED displays, servers, white goods, power infrastructure, building automation, and factory automation. It is available in a 16-SOIC package and is designed for surface mount applications.

The SN74HC138 devices are designed to minimize system decoding effects in high-performance memory systems. When used with fast enable circuits, their delay times are typically less than the memory's access time, resulting in negligible system delay.

SN74HC138DR Quick Information

Product Type: Decoder/Demultiplexer

Series: SN74HC138

Canonical Name: Texas Instruments SN74HC138 3-Line to 8-Line Decoder/Demultiplexer

SN74HC138DR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

SN74HC138DR Estimated Pricing

Qty	Low	High
1+	$0.17	$0.17

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

SN74HC138DR Features

3-line to 8-line decoder/demultiplexer.
Wide 2V to 6V operating voltage range.
Typical propagation delay of 15 ns.
Active low outputs.
Surface mount 16-SOIC package.

SN74HC138DR Applications

High-speed memory decoders.
Data transmission systems.
LED display control.
Automation systems.

SN74HC138DR FAQs

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

What is the operating voltage range of the SN74HC138DR?

2V to 6V

What package does the SN74HC138DR come in?

16-SOIC (0.154", 3.90mm Width)

What is the operating temperature range?

-40°C to 85°C

What is the typical propagation delay?

15 ns

What is the maximum supply current?

80 µA

What is the output drive capability at 5V?

±4 mA

How many enable inputs does the SN74HC138DR have?

Three enable inputs are provided to simplify cascading or data reception.

Category	Signal Switches, Multiplexers, Decoders
Manufacturer Name	Texas Instruments
Circuit	1 x 3:8
Current	±4 mA @ 5 V
Independent Circuits	1
Mounting Type	Surface Mount
Operating Temperature	-40°C to 85°C
Propagation Delay	15 ns
Supplier Device Package	16-SOIC
Supplier Package	16-SOIC
Type	Decoder/Demultiplexer
Voltage	2 V to 6 V
Voltage Supply Source	Single Supply