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SN74AHCT138PWR from TI,Texas Instruments

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SN74AHCT138PWR

Manufacturer: TI

3-Line to 8-Line Decoder / Demultiplexer

Partnumber Manufacturer Quantity Availability
SN74AHCT138PWR TI 4000 In Stock

Description and Introduction

3-Line to 8-Line Decoder / Demultiplexer The SN74AHCT138PWR 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:** 4.5V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Propagation Delay (Max):** 14 ns at 5V  
- **Input Capacitance:** 3 pF (typical)  
- **Output Drive Capability:** ±8 mA at 5V  
- **Package Type:** TSSOP-16  
- **Mounting Type:** Surface Mount  

### **Descriptions:**  
The SN74AHCT138PWR is designed for high-speed CMOS logic applications. It accepts three binary-weighted inputs (A0, A1, A2) and decodes them into eight mutually exclusive outputs (Y0-Y7). It also features three enable inputs (two active-low, one active-high) to simplify cascading and control.  

### **Features:**  
- **Low Power Consumption:** CMOS technology ensures low static power dissipation.  
- **High Noise Immunity:** Typical noise margin of 1V at 5V.  
- **Wide Operating Voltage:** Compatible with 5V systems.  
- **Active-Low Outputs:** Simplifies interfacing with other logic circuits.  
- **Schmitt-Trigger Inputs:** Improves noise rejection on control inputs.  
- **ESD Protection:** Exceeds 2000V per JESD 22.  

This device is commonly used in memory decoding, data routing, and address decoding in digital systems.

Application Scenarios & Design Considerations

3-Line to 8-Line Decoder / Demultiplexer

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