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SN74LS139A from TI,Texas Instruments

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SN74LS139A

Manufacturer: TI

Dual 2-line to 4-line decoders / demultiplexers

Partnumber Manufacturer Quantity Availability
SN74LS139A TI 1000 In Stock

Description and Introduction

Dual 2-line to 4-line decoders / demultiplexers The SN74LS139A is a dual 2-line to 4-line decoder/demultiplexer manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Number of Decoders:** 2 (Dual)  
- **Input Lines per Decoder:** 2 (A0, A1)  
- **Output Lines per Decoder:** 4 (Y0-Y3)  
- **Enable Inputs:** Active LOW (G)  
- **Supply Voltage (VCC):** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Propagation Delay (Typical):** 21 ns  
- **Power Dissipation (Typical):** 32 mW  
- **Package Options:** PDIP, SOIC, CDIP  

### **Description:**  
The SN74LS139A consists of two independent 2-to-4 decoders in a single package. Each decoder accepts two binary-weighted inputs (A0, A1) and provides four mutually exclusive active-LOW outputs (Y0-Y3). The device features an active-LOW enable input (G) that, when HIGH, forces all outputs HIGH.  

### **Features:**  
- **Dual 2-to-4 Line Decoding**  
- **Active-LOW Outputs**  
- **Schottky-Clamped for High Performance**  
- **Low Power Consumption**  
- **Multiple Package Options**  
- **TTL-Compatible Inputs and Outputs**  

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

Application Scenarios & Design Considerations

Dual 2-line to 4-line decoders / demultiplexers

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