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PCA9538DB from TI,Texas Instruments

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PCA9538DB

Manufacturer: TI

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

Partnumber Manufacturer Quantity Availability
PCA9538DB TI 1490 In Stock

Description and Introduction

Remote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output, Reset, and Config Registers 16-SSOP -40 to 85 The **PCA9538DB** from Texas Instruments is a versatile, low-voltage **8-bit I/O expander** designed for **I²C-bus/SMBus applications**. This compact component provides a simple solution for **microcontroller port expansion**, enabling efficient control of multiple peripherals with minimal GPIO pins.  

Featuring **interrupt output** and **internal pull-up resistors**, the PCA9538DB simplifies system design while enhancing reliability. It supports both **input and output configurations**, making it ideal for interfacing with sensors, switches, LEDs, and other digital devices. With an **operating voltage range of 1.65V to 5.5V**, it is compatible with a wide variety of microcontrollers and embedded systems.  

The device includes **three hardware address pins**, allowing up to **eight PCA9538DB units** to coexist on the same I²C bus. Its **low standby current consumption** makes it suitable for power-sensitive applications. Additionally, the **polarity inversion register** provides flexibility in signal handling.  

Engineers favor the PCA9538DB for its **ease of integration**, **robust performance**, and **space-saving TSSOP package**. Whether used in industrial automation, consumer electronics, or IoT devices, this I/O expander delivers efficient and scalable connectivity solutions.  

For detailed specifications, refer to the official datasheet to ensure proper implementation in your design.

Application Scenarios & Design Considerations

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

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