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PCA9544APW from PHILIPS

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PCA9544APW

Manufacturer: PHILIPS

4-channel I2C-bus multiplexer with interrupt logic

Partnumber Manufacturer Quantity Availability
PCA9544APW PHILIPS 5170 In Stock

Description and Introduction

4-channel I2C-bus multiplexer with interrupt logic The **PCA9544APW** from Philips is a versatile **4-channel I²C-bus multiplexer** designed to facilitate communication between multiple I²C devices sharing the same bus. This CMOS-based component enables a single master to control up to four separate I²C buses, effectively resolving address conflicts and expanding system flexibility.  

Featuring **bidirectional switching**, the PCA9544APW allows seamless selection of one of four downstream channels while maintaining low on-state resistance. Its interrupt handling capability ensures efficient communication by alerting the master when a slave device requires attention. The device operates across a **wide voltage range (2.3V to 5.5V)**, making it compatible with various logic levels.  

With a compact **TSSOP-20 package**, the PCA9544APW is ideal for space-constrained applications such as embedded systems, industrial controls, and consumer electronics. Its **low standby current** and robust ESD protection enhance reliability in demanding environments.  

Engineers benefit from its straightforward integration, requiring minimal external components while adhering to the **I²C Fast-mode (400 kHz) standard**. Whether managing sensors, memory modules, or peripheral ICs, the PCA9544APW provides an efficient solution for complex I²C bus management.

Application Scenarios & Design Considerations

4-channel I2C-bus multiplexer with interrupt logic

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