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PCA9545AZQNR from TI,Texas Instruments

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PCA9545AZQNR

Manufacturer: TI

4-Channel I2C And SMBus Multiplexer With Interrupt Logic And Reset Functions 20-BGA MICROSTAR JUNIOR -40 to 85

Partnumber Manufacturer Quantity Availability
PCA9545AZQNR TI 329 In Stock

Description and Introduction

4-Channel I2C And SMBus Multiplexer With Interrupt Logic And Reset Functions 20-BGA MICROSTAR JUNIOR -40 to 85 The **PCA9545AZQNR** from Texas Instruments is a versatile **4-channel I²C bus switch** designed to facilitate communication between multiple I²C devices sharing the same bus. This component enables seamless switching between different I²C segments, preventing address conflicts and enhancing system flexibility.  

Featuring **low on-state resistance**, the PCA9545AZQNR ensures minimal signal degradation while maintaining high-speed data transfer. Its **interrupt-driven switching** capability allows efficient management of multiple I²C peripherals, reducing the need for continuous polling. The device supports **voltage-level translation** between 1.8V, 3.3V, and 5V buses, making it suitable for mixed-voltage applications.  

Housed in a compact **WQFN-20 package**, the PCA9545AZQNR is ideal for space-constrained designs. It includes **power-on reset functionality** for reliable initialization and supports **hot insertion**, ensuring robust performance in dynamic environments.  

Common applications include **embedded systems, industrial automation, and consumer electronics**, where multiple I²C devices must coexist on a single bus. With its reliable switching and voltage compatibility, the PCA9545AZQNR simplifies complex I²C topologies while maintaining signal integrity.  

Engineers seeking a high-performance I²C multiplexer will find this component an efficient solution for expanding bus capacity without compromising speed or stability.

Application Scenarios & Design Considerations

4-Channel I2C And SMBus Multiplexer With Interrupt Logic And Reset Functions 20-BGA MICROSTAR JUNIOR -40 to 85

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