SN74HC138N Encoders, Decoders, Multiplexers & Demultiplexers by Texas Instruments – High-Speed Logic for Digital Systems

The Encoders, Decoders, Multiplexers & Demultiplexers SN74HC138N  by Texas Instruments is a high-performance 3-to-8 line decoder designed for fast digital logic operations. Widely used in microcontroller interfaces, memory address decoding, I/O expansion, and digital automation systems, it delivers excellent speed, low power consumption, and reliable switching.

In this article, we explore the specifications, key features, applications, wiring, and why this IC is a top choice in bold Semiconductors, bold Integrated Circuits – ICs, bold Logic ICs, and bold Encoders, Decoders, Multiplexers & Demultiplexers by Texas Instruments.

Technical Specifications of SN74HC138N

• Manufacturer: Texas Instruments

• Part Number: SN74HC138N

• Type: Encoders, Decoders, Multiplexers & Demultiplexers by Texas Instruments

• Logic Function: 3-to-8 line decoder/demultiplexer

• Operating Voltage: 2V – 6V

• Output Type: CMOS logic

• Propagation Delay: Low, suitable for high-speed logic

• Package: DIP-16 through-hole

• Category: Semiconductors, Integrated Circuits – ICs, Logic ICs

This IC offers reliable, predictable logic behavior ideal for digital and automation systems.

Key Features of SN74HC138N

• Fast Logic Operation – High-speed decoding for microcontroller and FPGA systems

• Low Power Consumption – Optimized for modern low-voltage digital circuits

• Wide Operating Range – Works reliably across 2–6V supplies

• Multiple Enable Inputs – Allows flexible address decoding and control

• Through-Hole Package – Easy prototyping with DIP-16 compatibility

These benefits make it a solid performer in the category of bold Semiconductors and top-tier bold Logic ICs used in embedded and industrial electronics.

Applications of SN74HC138N

This IC is widely used in:

• Memory address decoding

• Microcontroller I/O expansion

• Digital automation and industrial controllers

• LED matrix display drivers

• Communication and data routing

• Multiplexing/demultiplexing logic

• Signal selection and logic gating

Its dependable performance makes it essential in advanced bold Encoders, Decoders, Multiplexers & Demultiplexers by Texas Instruments.

Wiring and Connection Overview

1. Connect A0, A1, A2 to microcontroller output pins.

2. Use G1, G2A, G2B enable pins to activate or disable the device.

3. Route Y0–Y7 outputs to LEDs, relays, encoders, gates, or address lines.

4. Power with Vcc (2–6V) and connect GND.

5. Test each output by toggling address inputs.

This straightforward wiring makes SN74HC138N easy to integrate into any digital logic design.

Use Case Scenario: Microcontroller I/O Expansion

Scenario: A developer needed more I/O lines for a sensor hub powered by a microcontroller.
Problem: GPIO pins were limited and direct wiring caused complexity.
Solution: The SN74HC138N Encoders, Decoders, Multiplexers & Demultiplexers by Texas Instruments allowed a 3-pin input to control 8 individual outputs.
Result: Cleaner wiring, efficient logic decoding, and reduced processor load.

This showcases why TI is a leader in bold Semiconductors and high-efficiency bold Logic ICs.

Download Datasheet for SN74HC138N

Need detailed electrical parameters or timing diagrams?

Download the official datasheet from Xon Electronics 

Why Buy from Xon Electronics?

Xon Electronics provides high-quality bold Semiconductors, including reliable bold Encoders, Decoders, Multiplexers & Demultiplexers by Texas Instruments, with:

• 100% Genuine TI ICs

• Worldwide Shipping (USA, India, Europe, Australia & more)

• OEM, Industrial & Bulk Pricing

• Technical Assistance for Logic Design

• Safe & Secure Online Ordering

Order now from www.xonelec.com and enhance your digital circuit designs.

Conclusion

The SN74HC138N Encoders, Decoders, Multiplexers & Demultiplexers by Texas Instruments deliver high-speed decoding, low power usage, and flexible logic functionality. As one of the most trusted bold Integrated Circuits – ICs in digital systems, it remains a favorite in embedded, industrial, and automation designs.

FAQs – SN74HC138N

Q1. What type of IC is SN74HC138N?
A high-speed 3-to-8 line decoder/demultiplexer.

Q2. What category does it belong to?
It falls under Semiconductors, Integrated Circuits – ICs, and Logic ICs.

Q3. What voltage does it operate on?
Works from 2V to 6V.

Q4. What are the outputs used for?
Address decoding, signal selection, multiplexing, and control applications.

Q5. Where can I buy it?
Available globally at www.xonelec.com.