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SNJ54S139J from TM

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SNJ54S139J

Manufacturer: TM, TI

Dual 2-Line To 4-Line Decoders/Demultiplexers
Partnumber Manufacturer Quantity Availability
SNJ54S139J TM, TI 130 In Stock

Description and Introduction

Dual 2-Line To 4-Line Decoders/Demultiplexers The SNJ54S139J is a dual 2-line to 4-line decoder/demultiplexer manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Technology:** TTL (Transistor-Transistor Logic)  
- **Supply Voltage (VCC):** 4.5V to 5.5V  
- **Operating Temperature Range:** -55°C to +125°C (Military grade)  
- **Package:** Ceramic Dual-In-Line (CDIP)  
- **Logic Family:** 54S (Schottky TTL)  
- **Number of Channels:** 2 (Dual decoder/demultiplexer)  
- **Input Type:** TTL-Compatible  
- **Output Type:** Active Low  

### **Descriptions and Features:**  
- **Function:** Decodes two binary inputs (A0, A1) into four mutually exclusive outputs (Y0-Y3).  
- **Demultiplexing Capability:** Can be used as a 1-to-4 demultiplexer when an enable input is used as the data line.  
- **Active-Low Outputs:** Outputs are low when selected.  
- **Enable Inputs:** Two enable inputs (G1, G2) for cascading and control.  
- **High-Speed Operation:** Schottky-clamped for improved switching speed.  
- **Military Qualified:** Meets MIL-PRF-38535 standards for high-reliability applications.  

This device is designed for high-speed decoding and demultiplexing in harsh environments, including aerospace and defense applications.

Application Scenarios & Design Considerations

Dual 2-Line To 4-Line Decoders/Demultiplexers

Alternative Part Number

  • 74S139PC --: Same 74S139 dual 2-to-4 line decoder/demultiplexer function in a DIP package, widely available and pin-compatible.
  • MC74S139N --: Equivalent 74S series dual decoder/demultiplexer in DIP, direct functional replacement for the SNJ54S139J.
  • DM74S139N --: Another 74S139 dual 2-to-4 decoder in DIP with matching logic function and pinout, suitable as a drop-in alternative.
  • MC74F139N --: Faster 74F-series dual 2-to-4 decoder with identical pinout and logic function, suitable as a functional replacement.
  • DM74LS139N --: Low-power Schottky dual 2-to-4 decoder with the same pinout and function, usable where slightly slower speed is acceptable.

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