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SN74CB3Q3253DBQR from TEXAS

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SN74CB3Q3253DBQR

Manufacturer: TEXAS, TI

Dual 1-of-4 FET Multiplexer/Demultiplexer 2.5-V/3.3-V Low-Voltage High-Bandwidth Bus Switch

Partnumber Manufacturer Quantity Availability
SN74CB3Q3253DBQR TEXAS, TI 2497 In Stock

Description and Introduction

Dual 1-of-4 FET Multiplexer/Demultiplexer 2.5-V/3.3-V Low-Voltage High-Bandwidth Bus Switch The SN74CB3Q3253DBQR is a high-bandwidth FET bus switch manufactured by Texas Instruments.  

### **Specifications:**  
- **Type:** 2-Channel Bus Switch  
- **Configuration:** Dual 1-of-2 FET Multiplexer/Demultiplexer  
- **Voltage Supply Range:** 2.3V to 3.6V  
- **On-State Resistance (RON):** 5Ω (typical)  
- **Bandwidth:** 200 MHz (typical)  
- **Low Power Consumption:** ICC < 1μA (max)  
- **Input/Output Capacitance (CI/O):** 7pF (typical)  
- **Package:** SSOP-16 (DBQ)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The SN74CB3Q3253DBQR is a high-speed, low-power, dual 1-of-2 multiplexer/demultiplexer bus switch. It provides bidirectional switching with minimal propagation delay and supports mixed-mode signal operation.  

### **Features:**  
- **Low On-State Resistance (RON)** for minimal signal distortion  
- **Fast Switching** (tPD ≈ 0.25ns)  
- **Supports Mixed-Mode Signal Operation** (5V input with 3.3V supply)  
- **Bi-Directional Data Flow**  
- **Undershoot-Protected Inputs/Outputs**  
- **Latch-Up Performance Exceeds 100mA per JESD 78**  
- **ESD Protection Exceeds 2000V per JESD 22**  

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

Application Scenarios & Design Considerations

Dual 1-of-4 FET Multiplexer/Demultiplexer 2.5-V/3.3-V Low-Voltage High-Bandwidth Bus Switch

Alternative Part Number

  • PI3B3253QEX --: Dual 4:1 multiplexer/demultiplexer bus switch with similar low on-resistance and 3.3V operation, pin-compatible QSOP package, direct functional replacement.
  • CBT3253ADS --: Dual 4:1 FET bus switch with comparable switching characteristics and 5V tolerant inputs, suitable drop-in alternative in SSOP package.
  • 74CB3Q3253PGG --: Low-voltage dual 4:1 bus switch with similar bandwidth and low Ron, offered in TSSOP package as a functional equivalent.
  • 74CBTLV3253QG --: Low-voltage dual 4:1 FET bus switch offering comparable RON and propagation delay, suitable as a drop-in alternative for bus switching applications.

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