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MM74HCT138SJX from FAIRC,Fairchild Semiconductor

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MM74HCT138SJX

Manufacturer: FAIRC, FAIRCHIL

3-to-8 Line Decoder

Partnumber Manufacturer Quantity Availability
MM74HCT138SJX FAIRC, FAIRCHIL 44000 In Stock

Description and Introduction

3-to-8 Line Decoder # **Introducing the MM74HCT138SJX: A High-Performance 3-to-8 Line Decoder**  

The **MM74HCT138SJX** is a high-speed CMOS logic device designed to deliver reliable and efficient signal decoding in a wide range of digital applications. As a **3-to-8 line decoder/demultiplexer**, this component is engineered to convert three binary input signals into one of eight mutually exclusive outputs, making it an essential building block for address decoding, memory selection, and data routing systems.  

Built with **HCT (High-Speed CMOS with TTL Compatibility)** technology, the MM74HCT138SJX ensures seamless integration with both CMOS and TTL logic levels, providing robust performance in mixed-voltage environments. Its low power consumption and high noise immunity make it ideal for applications where energy efficiency and signal integrity are critical.  

Key features of the MM74HCT138SJX include:  
- **Three Enable Inputs** – Two active-low and one active-high enable pins for flexible control.  
- **High-Speed Operation** – Optimized for fast switching, reducing propagation delays.  
- **Wide Operating Voltage Range** – Compatible with 4.5V to 5.5V supplies.  
- **Low Power Consumption** – CMOS technology ensures minimal power dissipation.  
- **Sturdy Output Drive Capability** – Capable of driving standard TTL loads with ease.  

The MM74HCT138SJX is available in a compact **SOIC-16 package**, making it suitable for space-constrained PCB designs while maintaining excellent thermal and electrical performance. Whether used in industrial automation, telecommunications, or embedded computing, this decoder provides a dependable solution for efficient signal management.  

For engineers and designers seeking a high-performance, cost-effective decoding solution, the **MM74HCT138SJX** stands out as a versatile and reliable choice. Its combination of speed, compatibility, and low power consumption ensures optimal functionality in modern digital systems.

Application Scenarios & Design Considerations

3-to-8 Line Decoder

Alternative Part Number

  • SN74HCT138N --: Pin-compatible 3-to-8 line decoder/demultiplexer in the same HCT logic family, widely available and functionally equivalent.
  • CD74HCT138E --: Equivalent HCT-series 3-to-8 decoder with matching function and pinout, suitable direct replacement.
  • 74HCT138N --: Standard HCT 3-to-8 decoder in DIP package, same logic function and compatible electrical characteristics.
  • SN74HCT138NSR --: Same 3-to-8 line decoder/demultiplexer function in HCT logic family, SOIC-16 package, direct functional and pin-compatible replacement.
  • CD74HCT138M96 --: HCT-series 3-to-8 decoder with identical logic function and pinout, available in SOIC-16, suitable drop-in substitute.
  • 74HCT138D,653 --: Standard 74HCT138 decoder in SO16 package with equivalent function and pinout, widely available alternative.

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