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PCA9538DWR from TI,Texas Instruments

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PCA9538DWR

Manufacturer: TI

Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers 16-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
PCA9538DWR TI 25 In Stock

Description and Introduction

Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers 16-SOIC -40 to 85 The **PCA9538DWR** from Texas Instruments is a versatile, low-power 8-bit I²C-bus and SMBus I/O expander designed to enhance system flexibility in various applications. This CMOS-based device provides general-purpose remote I/O expansion, enabling efficient control of multiple digital signals via a two-wire serial interface.  

Featuring an operating voltage range of **2.3V to 5.5V**, the PCA9538DWR is suitable for both industrial and consumer electronics. It includes eight configurable GPIO pins that can be independently set as inputs or outputs, with internal pull-up resistors for simplified circuit design. The device supports **interrupt functionality**, allowing the host controller to monitor input changes without continuous polling, improving system efficiency.  

With its **I²C/SMBus compatibility**, the PCA9538DWR seamlessly integrates into microcontroller-based systems, making it ideal for applications such as sensor interfacing, LED control, and system monitoring. Its compact **SOIC-16 package** ensures space-efficient PCB layouts while maintaining robust performance.  

Key features include **low standby current consumption**, high noise immunity, and latch-up protection, ensuring reliability in demanding environments. Whether used in industrial automation, IoT devices, or embedded systems, the PCA9538DWR offers a scalable solution for expanding digital I/O capabilities efficiently.

Application Scenarios & Design Considerations

Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers 16-SOIC -40 to 85

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