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SN74LS139DR2 from TI,Texas Instruments

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SN74LS139DR2

Manufacturer: TI

Dual 1-OF-4 Decoder/ Demultiplexer

Partnumber Manufacturer Quantity Availability
SN74LS139DR2 TI 2105 In Stock

Description and Introduction

Dual 1-OF-4 Decoder/ Demultiplexer The SN74LS139DR2 is a dual 2-line to 4-line decoder/demultiplexer manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Function:** Dual 2-to-4 Line Decoder/Demultiplexer  
- **Supply Voltage (VCC):** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package Type:** SOIC-16  
- **Output Type:** Active Low  
- **Propagation Delay (Typical):** 15 ns  
- **Input Current (Max):** 0.36 mA  
- **Output Current (Max):** 8 mA  

### **Descriptions:**  
The SN74LS139DR2 contains two independent 2-to-4 decoders that accept two binary-weighted inputs (A0, A1) and provide four mutually exclusive active-low outputs (Y0-Y3). Each decoder has an active-low enable input (E) that, when high, forces all outputs high.  

### **Features:**  
- **Dual Decoder/Demultiplexer:** Two independent 2-to-4 decoders in one package.  
- **Active-Low Outputs:** Outputs are low when selected.  
- **Enable Input:** Each decoder has an enable (E) for easy expansion.  
- **Low Power Consumption:** LS technology ensures reduced power usage.  
- **Wide Operating Voltage:** Compatible with standard TTL levels.  
- **High-Speed Operation:** Fast switching with minimal propagation delay.  

This device is commonly used in address decoding, memory selection, and data routing applications.

Application Scenarios & Design Considerations

Dual 1-OF-4 Decoder/ Demultiplexer

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