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SN54251J from TI,Texas Instruments

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SN54251J

Manufacturer: TI

DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

Partnumber Manufacturer Quantity Availability
SN54251J TI 50 In Stock

Description and Introduction

DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS The SN54251J is a 1-of-8 data selector/multiplexer manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** Data Selector/Multiplexer  
- **Number of Channels:** 1  
- **Number of Inputs:** 8  
- **Output Type:** Standard  
- **Supply Voltage (VCC):** 4.75V to 5.25V  
- **Operating Temperature Range:** -55°C to +125°C  
- **Package Type:** Ceramic DIP (Dual In-line Package)  
- **Propagation Delay:** Typically 30ns  
- **Power Dissipation:** Typically 100mW  

### **Descriptions and Features:**  
- The SN54251J is a high-speed TTL (Transistor-Transistor Logic) device.  
- It selects one of eight binary data inputs and routes it to a single output based on the select lines (A, B, C).  
- Features a strobe (enable) input for controlling the output state.  
- Designed for military and industrial applications with extended temperature range.  
- Compatible with standard TTL logic levels.  
- High noise immunity and robust performance in harsh environments.  

This device is part of TI's 5400 series, which is characterized by military-grade reliability.

Application Scenarios & Design Considerations

DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

Alternative Part Number

  • CD74HCT251E --: HCT-family 8-input multiplexer with 3-state outputs in a DIP package, functionally equivalent to the 54251 and widely available.
  • MC74HC251N --: HC-family 8-input multiplexer with 3-state outputs, same logic function and DIP pinout, good second-source option.
  • SN74LS251N --: LS-family 8-input multiplexer with 3-state outputs, same function and pinout, suitable when TTL-level compatibility is acceptable.

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