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SN74AS257N from TI,Texas Instruments

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SN74AS257N

Manufacturer: TI

Quadruple 2-Line to 1-Line Data Selectors/Multiplexers With 3-State Outputs

Partnumber Manufacturer Quantity Availability
SN74AS257N TI 480 In Stock

Description and Introduction

Quadruple 2-Line to 1-Line Data Selectors/Multiplexers With 3-State Outputs The SN74AS257N is a quad 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** Data Selector/Multiplexer  
- **Number of Channels:** 4  
- **Number of Input Lines per Channel:** 2  
- **Output Type:** 3-State  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package / Case:** PDIP-16  
- **Propagation Delay Time:** 8ns (typical)  
- **High-Level Output Current:** -15mA  
- **Low-Level Output Current:** 24mA  

### **Descriptions:**  
The SN74AS257N is a high-speed TTL logic device that selects one of two data inputs (A or B) based on the select (S) input. It features 3-state outputs, allowing multiple devices to share a common bus.  

### **Features:**  
- **Quad 2-to-1 Multiplexer:** Four independent multiplexers in a single package.  
- **3-State Outputs:** Supports bus-oriented applications.  
- **High-Speed Operation:** Optimized for fast switching.  
- **TTL-Compatible Inputs:** Works with standard TTL logic levels.  
- **Wide Operating Voltage:** Supports 4.5V to 5.5V operation.  

This device is commonly used in digital systems for data routing, signal switching, and bus interfacing.

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