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SN74HC138D from TI,Texas Instruments

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SN74HC138D

Manufacturer: TI

3-Line To 8-Line Decoders/Demultiplexers

Partnumber Manufacturer Quantity Availability
SN74HC138D TI 21900 In Stock

Description and Introduction

3-Line To 8-Line Decoders/Demultiplexers The SN74HC138D is a 3-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**: 2V to 6V  
- **High-Level Input Voltage (Min)**: 2V  
- **Low-Level Input Voltage (Max)**: 0.8V  
- **Operating Temperature Range**: -40°C to +85°C  
- **Package Type**: SOIC-16  
- **Propagation Delay (Max)**: 26 ns at 5V  
- **Current - Output High, Low**: 5.2mA, 5.2mA  

### **Descriptions:**  
The SN74HC138D decodes three binary address inputs (A0, A1, A2) into one of eight mutually exclusive outputs (Y0-Y7). It features three enable inputs (two active-low and one active-high) to simplify cascading and reduce the need for external gates.  

### **Features:**  
- **3-to-8 Line Decoding**: Converts 3-bit binary input to 8 active-low outputs.  
- **Demultiplexing Capability**: Can function as a 1-to-8 demultiplexer.  
- **Multiple Enable Inputs**: Two active-low (G2A, G2B) and one active-high (G1) for easy expansion.  
- **Low Power Consumption**: CMOS technology ensures minimal power dissipation.  
- **Wide Operating Voltage**: Supports 2V to 6V operation.  
- **High Noise Immunity**: Standard CMOS noise resistance.  
- **Balanced Propagation Delays**: Ensures consistent timing performance.  

This information is sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

3-Line To 8-Line Decoders/Demultiplexers

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