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MC74VHC138DTR2 from MOT,Motorola

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MC74VHC138DTR2

Manufacturer: MOT, ON

Decoder/Demultiplexer

Partnumber Manufacturer Quantity Availability
MC74VHC138DTR2 MOT, ON 11370 In Stock

Description and Introduction

Decoder/Demultiplexer # **MC74VHC138DTR2: A High-Performance 3-to-8 Line Decoder for Modern Digital Systems**  

In the fast-evolving world of digital electronics, efficient signal decoding is essential for seamless system operation. The **MC74VHC138DTR2** is a high-speed **3-to-8 line decoder/demultiplexer** designed to meet the demands of modern circuit designs. Built with **Very High-Speed CMOS (VHC) technology**, this component delivers superior performance while maintaining low power consumption—making it an ideal choice for a wide range of applications.  

## **Key Features and Benefits**  

### **1. High-Speed Operation**  
The MC74VHC138DTR2 operates at **speeds up to 8.5 ns propagation delay**, ensuring rapid signal processing in time-critical applications. Its fast switching capability makes it suitable for high-frequency digital systems, including microcontrollers, memory addressing, and data routing.  

### **2. Low Power Consumption**  
With **CMOS technology**, this decoder minimizes power dissipation, making it an energy-efficient solution for battery-powered and portable devices. The **low static power consumption** ensures extended operational life without compromising performance.  

### **3. Wide Operating Voltage Range**  
Supporting a **2.0V to 5.5V supply voltage range**, the MC74VHC138DTR2 is compatible with both **3.3V and 5V logic systems**, providing flexibility in mixed-voltage environments.  

### **4. Robust Noise Immunity**  
The device features **enhanced noise resistance**, ensuring reliable operation in electrically noisy environments. This makes it well-suited for industrial automation, automotive electronics, and communication systems.  

### **5. Compact and Space-Saving Design**  
Available in a **TSSOP-16 package**, the MC74VHC138DTR2 offers a compact footprint, ideal for space-constrained PCB designs. Its surface-mount compatibility simplifies assembly while maintaining high reliability.  

## **Applications**  

The versatility of the MC74VHC138DTR2 makes it a valuable component in various digital systems, including:  
- **Memory address decoding** in microcontrollers and FPGAs  
- **Data routing and signal demultiplexing** in communication systems  
- **Industrial control systems** requiring precise logic selection  
- **Automotive electronics** where robust performance is critical  
- **Consumer electronics**, such as smart devices and embedded systems  

## **Conclusion**  

The **MC74VHC138DTR2** stands out as a high-performance, low-power decoder that meets the rigorous demands of modern digital circuits. Its **fast switching speed, wide voltage compatibility, and noise immunity** make it a reliable choice for engineers designing efficient and scalable electronic systems. Whether used in industrial, automotive, or consumer applications, this component ensures precise signal decoding with minimal power overhead.  

For designers seeking a dependable and efficient 3-to-8 line decoder, the **MC74VHC138DTR2** delivers the speed, efficiency, and reliability needed to enhance system performance.

Application Scenarios & Design Considerations

Decoder/Demultiplexer

Alternative Part Number

  • SN74AHC138D --: Same 3-to-8 line decoder/demultiplexer function in SOIC-16, AHC logic family with comparable speed and drive, widely available and pin-compatible.
  • 74VHC138M --: Direct VHC-family 3-to-8 decoder in SOIC-16, same logic family and pinout as the original, good electrical match.
  • CD74HC138M --: HC-family 3-to-8 decoder in SOIC-16 with identical pinout and function; slightly lower speed but a reliable drop-in for most designs.
  • 74AHC138D --: Equivalent AHC-series 3-to-8 decoder in SOIC-16, direct functional and pin-compatible replacement.

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