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SN74CBT3257DBQR from TI,Texas Instruments

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SN74CBT3257DBQR

Manufacturer: TI

4-Bit 1-Of-2 FET Multiplexer/Demultiplexer
Partnumber Manufacturer Quantity Availability
SN74CBT3257DBQR TI 35688 In Stock

Description and Introduction

4-Bit 1-Of-2 FET Multiplexer/Demultiplexer The SN74CBT3257DBQR is a 4-bit 1-of-2 FET multiplexer/demultiplexer manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Supply Voltage Range (VCC):** 4V to 5.5V  
- **On-State Resistance (RON):** 5Ω (typical) at VCC = 5V  
- **Bandwidth:** 200MHz (typical)  
- **Low Power Consumption:** ICC = 0.25µA (max) at TA = 25°C  
- **Input/Output Capacitance (CI/O):** 10pF (typical)  
- **Propagation Delay (tpd):** 0.25ns (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SSOP-16 (DBQR)  

### **Descriptions:**  
The SN74CBT3257DBQR is a high-speed, low-power, 4-bit multiplexer/demultiplexer with a single enable (EN) input. It allows bidirectional signal flow and is designed for digital and analog signal switching applications.  

### **Features:**  
- **Bidirectional Signal Transmission**  
- **Low On-State Resistance (5Ω typical)**  
- **Fast Switching (tpd = 0.25ns typical)**  
- **Wide Operating Voltage (4V to 5.5V)**  
- **Supports Mixed-Mode Signal Operation**  
- **Break-Before-Make Switching**  
- **ESD Protection Exceeds 2000V (HBM)**  

This device is commonly used in data routing, signal gating, and bus switching applications.

Application Scenarios & Design Considerations

4-Bit 1-Of-2 FET Multiplexer/Demultiplexer

Alternative Part Number

  • PI3B3257QE --: Quad 2:1 multiplexer/demultiplexer bus switch with similar 5V-tolerant CMOS bus-switch function, available in QSOP package, direct functional replacement for the CBT3257.
  • QS3VH257S1G --: High-bandwidth 2:1 mux/demux bus switch from the QuickSwitch family, functionally equivalent to the CBT3257 with low on-resistance and QSOP packaging.
  • 74CBTLV3257QG --: Low-voltage quad 2:1 bus switch multiplexer/demultiplexer with similar pinout and function, suitable as a cross-series alternative when 3.3V operation is acceptable.

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