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FSTU3257QSCX

Quad 2:1 Multiplexer/Demultiplexer Bus Switch with -2V Undershoot Protection

Partnumber Manufacturer Quantity Availability
FSTU3257QSCX 312 In Stock

Description and Introduction

Quad 2:1 Multiplexer/Demultiplexer Bus Switch with -2V Undershoot Protection The part **FSTU3257QSCX** is a **Quad High-Speed CMOS Bus Switch** manufactured by **Fairchild Semiconductor (now part of ON Semiconductor)**.  

### Key Specifications:  
- **Function**: 4-bit bus switch with 2.5V/3.3V voltage translation capability.  
- **Voltage Supply Range**: 2.3V to 3.6V.  
- **Switching Speed**: Low propagation delay (<5ns).  
- **On-Resistance (RON)**: Typically 5Ω.  
- **I/O Compatibility**: 5V-tolerant inputs.  
- **Package**: 16-pin QSOP (QSOP-16).  
- **Operating Temperature Range**: -40°C to +85°C.  
- **Applications**: Data switching, signal gating, and level translation in mixed-voltage systems.  

For exact electrical characteristics and timing diagrams, refer to the official datasheet from ON Semiconductor.

Partnumber Manufacturer Quantity Availability
FSTU3257QSCX FAIRCHILD 185000 In Stock

Description and Introduction

Quad 2:1 Multiplexer/Demultiplexer Bus Switch with -2V Undershoot Protection The part **FSTU3257QSCX** is manufactured by **Fairchild Semiconductor**. It is a **Quad Single-Pole Double-Throw (SPDT) Analog Switch** with the following key specifications:  

- **Supply Voltage Range (VCC):** 2.3V to 3.6V  
- **Low On-Resistance (RON):** 5Ω (typical)  
- **Low Power Consumption:** 1μA (max) in standby mode  
- **Fast Switching Time:** 10ns (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin QSOP  

This device is designed for **high-speed, low-power signal switching** applications, such as **data routing, communication systems, and portable electronics**.  

(Source: Fairchild Semiconductor datasheet for FSTU3257QSCX.)

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