SN74F138N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

Name: SN74F138N
Brand: Texas Instruments
SKU: SN74F138N
Availability: InStock

SN74F138N is a high-speed TTL 3-to-8 line decoder/demultiplexer with two active-low and one active-high enable inputs, available in a 16-pin DIP package. From $0.40 in stock with worldwide shipping.

ACTIVEIntegrated CircuitVerified May 2026

Package / Visual Reference

SN74F138NDual-In-Line Packages

Quick Facts

Manufacturer: Texas Instruments
Package: Dual-In-Line Packages
Pin Count: 16
Lifecycle: ACTIVE
Datasheet: SN74F138N Datasheet PDF
Category: Integrated Circuit
Price: From $0.3984(MOQ 1)
Temp Range: ?°C to 70.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of SN74F138N?

3-to-8 line decoder/demultiplexer with active-low outputs for address decoding and data routing
Two active-low (G2A, G2B) and one active-high (G1) enable inputs allow cascading and memory expansion
Texas Instruments F/FAST family for high-speed operation with 50 pF load capacitance
16-pin DIP package (R-PDIP-T16) for easy through-hole PCB assembly and prototyping
RoHS compliant (Pb-free, e4) with 15-year EOL support for long-life applications

What is SN74F138N used for?

The SN74F138N is widely used in address decoding for microprocessor and memory systems, enabling efficient selection of up to 8 memory banks or peripheral devices. It is also applied in data demultiplexing, bus expansion, and digital logic systems where fast, reliable signal routing is required. Its multiple enable inputs make it ideal for cascading in larger decoding networks used in industrial control, communications, and embedded systems.

What are the specifications of SN74F138N?

Pbfree Code	Yes
YTEOL	15
Additional Feature	TWO ACTIVE-LOW AND ONE ACTIVE-HIGH ENABLE INPUTS
Family	F/FAST
Input Conditioning	STANDARD
JESD-30 Code	R-PDIP-T16
JESD-609 Code	e4
Load Capacitance (CL)	50pF
Logic IC Type	3-LINE TO 8-LINE DECODER
Max I(ol)	0.02A
Number of Bits	8
Number of Functions	1
Output Polarity	INVERTED
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	DIP16,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Packing Method	TUBE
Power Supply Current-Max (ICC)	20mA
Prop. Delay@Nom-Sup	9ns
Propagation Delay (tpd)	9ns
Qualification Status	Not Qualified
Supply Voltage-Max (Vsup)	5.5V
Supply Voltage-Min (Vsup)	4.5V
Supply Voltage-Nom (Vsup)	5V
Surface Mount	NO
Technology	TTL
Temperature Grade	COMMERCIAL
Terminal Finish	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
Package	Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.39.00.90
Country of Origin	Malaysia, Mexico

Where can I find the SN74F138N datasheet?

SN74F138N Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for SN74F138N?

Compatible alternatives and drop-in replacements for SN74F138N:

SN74F138DTexas Instruments

F/FAST Series, Inverted Output, TTL, PDSO16

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What is the logic function of the SN74F138N?

The SN74F138N is a 3-to-8 line decoder/demultiplexer. It takes a 3-bit binary address input and activates one of eight active-low outputs. It features two active-low enable inputs (G2A, G2B) and one active-high enable input (G1), allowing flexible enable control and cascading for larger decoding arrays.

What package and pin count does the SN74F138N use?

The SN74F138N is housed in a 16-pin dual in-line package (PDIP, JESD-30 code R-PDIP-T16), which is a standard through-hole package. This makes it suitable for breadboard prototyping and traditional PCB assembly. The load capacitance is rated at 50 pF.

What are common applications for the SN74F138N?

Common applications include memory address decoding in microprocessor systems, selection of up to 8 peripherals or memory banks, data demultiplexing, and bus expansion. Its enable inputs allow multiple SN74F138N devices to be cascaded to decode larger address spaces in embedded and industrial control systems.

Is the SN74F138N RoHS compliant and what is its availability?

Yes, the SN74F138N is RoHS compliant with a Pb-free code (Yes) and JESD-609 code e4. It has a 15-year YTEOL (years to end of life), indicating long-term availability. It is priced from approximately $0.40 and is available for worldwide shipping.

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About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

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AvailabilityIn Stock

Reference Price (USD)

From $0.3984

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$0.6850	$0.69
8+	$0.5480	$4.38
22+	$0.5123	$11.27
37+	$0.4110	$15.21
99+	$0.3984	$39.44

pcs

Unit price: $0.6850 · Total: $0.69

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”

Marco Rossi

CTO, AutoDrive Systems, Italy

SN74F138N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of SN74F138N?

What is SN74F138N used for?

What are the specifications of SN74F138N?

Compliance & Regulatory

Where can I find the SN74F138N datasheet?

What are equivalent replacements for SN74F138N?

Frequently Asked Questions

What is the logic function of the SN74F138N?

What package and pin count does the SN74F138N use?

What are common applications for the SN74F138N?

Is the SN74F138N RoHS compliant and what is its availability?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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