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PCA9546APW from TI,Texas Instruments

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PCA9546APW

Manufacturer: TI

4-channel I2C-bus switch with reset

Partnumber Manufacturer Quantity Availability
PCA9546APW TI 36 In Stock

Description and Introduction

4-channel I2C-bus switch with reset The **PCA9546APW** from Texas Instruments is a versatile **4-channel I²C-bus multiplexer** designed to expand communication capabilities in embedded systems. This compact, low-power component enables seamless switching between multiple I²C buses, allowing a single master device to interface with multiple slave devices sharing the same address.  

Featuring bidirectional voltage-level translation, the PCA9546APW supports operating voltages from **1.8V to 5.5V**, making it compatible with a wide range of microcontrollers and peripherals. Its interrupt function facilitates efficient monitoring of downstream devices, reducing the need for continuous polling.  

With a **low standby current** and robust ESD protection, this multiplexer is ideal for power-sensitive applications such as IoT devices, industrial automation, and consumer electronics. The **TSSOP-16 package** ensures a space-efficient footprint, suitable for high-density PCB designs.  

Key benefits include **hot insertion support**, glitch-free switching, and compatibility with **Standard-mode (100 kHz) and Fast-mode (400 kHz) I²C** protocols. Engineers can leverage the PCA9546APW to simplify system architecture while maintaining reliable I²C communication across multiple channels.  

For applications requiring scalable I²C connectivity, the PCA9546APW offers a reliable, high-performance solution.

Application Scenarios & Design Considerations

4-channel I2C-bus switch with reset

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