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SN74HCT138PWLE from TEXAS

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SN74HCT138PWLE

Manufacturer: TEXAS, TI

3-Line To 8-Line Decoders/Demultiplexers

Partnumber Manufacturer Quantity Availability
SN74HCT138PWLE TEXAS, TI 2706 In Stock

Description and Introduction

3-Line To 8-Line Decoders/Demultiplexers The SN74HCT138PWLE is a 3-line to 8-line decoder/demultiplexer manufactured by Texas Instruments (TEXAS). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Texas Instruments (TEXAS)  
- **Part Number:** SN74HCT138PWLE  
- **Technology:** HCT (High-Speed CMOS, TTL-Compatible)  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** TSSOP (Thin Shrink Small Outline Package)  
- **Pin Count:** 16  
- **Logic Family:** 74HCT  
- **Input Type:** CMOS/TTL-Compatible  
- **Output Type:** Standard  

### **Descriptions:**
The SN74HCT138PWLE is a high-speed CMOS logic device that functions as a 3-to-8 line decoder/demultiplexer. It accepts three binary address inputs (A0, A1, A2) and decodes them to provide eight mutually exclusive active-low outputs (Y0 to Y7). The device features three enable inputs (two active-low and one active-high) for cascading and control purposes.  

### **Features:**
1. **3-to-8 Line Decoding:** Converts 3 binary inputs into 8 active-low outputs.  
2. **Demultiplexing Capability:** Can function as a demultiplexer with the appropriate enable inputs.  
3. **TTL-Compatible Inputs:** Works with both CMOS and TTL logic levels.  
4. **Low Power Consumption:** Optimized for power-sensitive applications.  
5. **High Noise Immunity:** Typical of HCT logic family.  
6. **Multiple Enable Inputs:** Includes G1 (active-high) and G2A, G2B (active-low) for flexible control.  
7. **Wide Operating Voltage:** Supports 4.5V to 5.5V operation.  
8. **Standard Output Drive:** Suitable for driving moderate loads.  

This information is strictly based on the device's datasheet and technical documentation.

Application Scenarios & Design Considerations

3-Line To 8-Line Decoders/Demultiplexers

Alternative Part Number

  • CD74HCT138E --: Same 3-to-8 line decoder/demultiplexer function with HCT logic family and identical pinout, available in PDIP package as a direct functional replacement.
  • MC74HCT138ADG --: HCT-series 3-to-8 decoder with equivalent truth table and TTL-compatible inputs, suitable drop-in alternative from a different manufacturer.
  • 74HCT138D,653 --: Standard 74HCT138 decoder in SO package with matching logic function and voltage compatibility, offering a second-source option.
  • 74HCT138PW,118 --: Pin-compatible 3-to-8 line decoder/demultiplexer in TSSOP-16 with HCT-level inputs, direct functional drop-in for the SN74HCT138PW.
  • CD74HCT138M96 --: Same TI HCT logic family decoder in SOIC-16, electrically equivalent function with wide availability, suitable when a wider package is acceptable.
  • MC74HCT138ADTR2G --: HCT 3-to-8 decoder in TSSOP-16 with matching pinout and logic thresholds, a viable second-source alternative.

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