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SN74HCT138N from TI/BB,Texas Instruments

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SN74HCT138N

Manufacturer: TI/BB

3-Line To 8-Line Decoders/Demultiplexers

Partnumber Manufacturer Quantity Availability
SN74HCT138N TI/BB 1 In Stock

Description and Introduction

3-Line To 8-Line Decoders/Demultiplexers The SN74HCT138N is a 3-line to 8-line decoder/demultiplexer manufactured by Texas Instruments (TI)/Burr-Brown (BB).  

### **Specifications:**  
- **Logic Type**: Decoder/Demultiplexer  
- **Number of Input Lines**: 3  
- **Number of Output Lines**: 8 (active-low)  
- **Supply Voltage (VCC)**: 4.5V to 5.5V  
- **High-Level Input Voltage (VIH)**: 2V (min)  
- **Low-Level Input Voltage (VIL)**: 0.8V (max)  
- **High-Level Output Current (IOH)**: -4mA  
- **Low-Level Output Current (IOL)**: 4mA  
- **Propagation Delay (tpd)**: 32ns (typical at 4.5V)  
- **Operating Temperature Range**: -40°C to +85°C  
- **Package**: PDIP-16  

### **Descriptions:**  
The SN74HCT138N decodes three binary address inputs (A0, A1, A2) into one of eight mutually exclusive outputs (Y0-Y7). It features three enable inputs (G1, G2A, G2B) for cascading and control.  

### **Features:**  
- **High-Speed CMOS Logic** (HCT) with TTL-compatible inputs  
- **Low Power Consumption** (typical ICC of 80µA)  
- **Demultiplexing Capability**  
- **Schmitt-Trigger Inputs** for improved noise immunity  
- **Wide Operating Voltage Range** (4.5V to 5.5V)  
- **Latch-Up Performance Exceeds 250mA** per JESD 17  

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

Application Scenarios & Design Considerations

3-Line To 8-Line Decoders/Demultiplexers

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