The PCA9538BS is an 8-bit GPIO expander with I2C interface manufactured by NXP. Here are some details about the PCA9538BS:
**Function parameter:**
- 8 configurable GPIO (General Purpose Input/Output) pins
- Support I2C bus communication protocol
- Programmable input/output polarity
- Programmable interrupt polarity and pin selection
- Programmable GPIO default output value
- Support external input signal filtering
- Support hot plug protection
- Support cascade mode to expand more GPIO pins
- Operating Voltage Range: 1.65V to 5.5V
**Features:**
- I2C interface simplifies connection and control
- Programmability makes it suitable for a variety of application scenarios
- Configurable interrupt function can be used to detect GPIO state change
- Support cascade mode to expand the number of GPIO pins
- Low-power design, suitable for mobile devices and battery-powered systems
**Application field:**
- Industrial automation and control systems
- Automotive electronic system
- smart home devices
- Handheld and portable devices
- LED lighting control
- Embedded Systems
