pca9531pw

The PCA9531PW is a 16-bit I2C-bus and SMBus I/O expander, designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C-bus interface. It's an ideal choice for applications requiring additional I/O lines, such as industrial control, alarms, security systems, LED lighting, and more. This device features a 16-bit quasi-bidirectional input/output (I/O) port, with individual programmable open-drain current-sourcing outputs, and high-current capability (25mA). It also includes an internal power-on reset (POR) to ensure that the I/Os are reset to their default state on power-up. With its small footprint and low power consumption, the PCA9531PW is a versatile and cost-effective solution for expanding the I/O capabilities of a wide range of microcontroller-based systems. It's also compatible with both the I2C-bus and SMBus, making it easy to integrate into existing systems.