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SN74ALS138 from TI,Texas Instruments

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SN74ALS138

Manufacturer: TI

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

Partnumber Manufacturer Quantity Availability
SN74ALS138 TI 241 In Stock

Description and Introduction

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS The SN74ALS138 is a 3-line to 8-line decoder/demultiplexer manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type**: Decoder/Demultiplexer  
- **Number of Input Lines**: 3 (A0, A1, A2)  
- **Number of Output Lines**: 8 (Y0–Y7, active-low)  
- **Supply Voltage Range**: 4.5V to 5.5V  
- **Operating Temperature Range**: 0°C to 70°C  
- **Propagation Delay (Max)**: 15 ns  
- **Power Dissipation (Max)**: 80 mW  
- **Input Current (Max)**: -0.4 mA (Low), 20 µA (High)  
- **Output Current (Max)**: 24 mA (Sink), -3 mA (Source)  

### **Descriptions and Features:**  
- The SN74ALS138 decodes three binary address inputs (A0, A1, A2) into one of eight mutually exclusive outputs (Y0–Y7).  
- Active-low enable inputs (G1, G2A, G2B) allow for easy expansion to larger decoders.  
- Designed for high-speed operation with low power consumption.  
- Suitable for memory address decoding and data routing applications.  
- TTL-compatible inputs and outputs.  
- Available in PDIP, SOIC, and other package options.  

This device is part of TI's Advanced Low-Power Schottky (ALS) logic family, optimized for performance and efficiency.

Application Scenarios & Design Considerations

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

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