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PCA9545ADWR from TI,Texas Instruments

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PCA9545ADWR

Manufacturer: TI

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

Partnumber Manufacturer Quantity Availability
PCA9545ADWR TI 44 In Stock

Description and Introduction

4-Channel I2C And SMBus Multiplexer With Interrupt Logic And Reset Functions 20-SOIC -40 to 85 The **PCA9545ADWR** from Texas Instruments is a versatile **4-channel I²C bus switch** designed to facilitate communication between multiple I²C-compatible devices. This component enables seamless switching between different I²C buses, allowing a single master device to control multiple slave devices without bus contention.  

Featuring **low on-state resistance** and support for **bidirectional voltage-level translation**, the PCA9545ADWR ensures reliable data transmission across varying voltage levels (1.8V to 5.5V). Its interrupt functionality allows the master to detect signal changes on any enabled channel, improving system efficiency.  

With **4 selectable channels**, the device is ideal for applications requiring I²C multiplexing, such as industrial control systems, embedded computing, and sensor networks. The PCA9545ADWR operates with a **wide supply voltage range** and includes power-up reset circuitry for stable initialization.  

Housed in a **TSSOP-20 package**, this switch is compact and suitable for space-constrained designs. Its robust performance and ease of integration make it a reliable solution for expanding I²C connectivity in complex electronic systems.  

For detailed specifications, designers should refer to the official datasheet to ensure proper implementation in their applications.

Application Scenarios & Design Considerations

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

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