Features:1. Dual Communication Interface – Converts 16-bit parallel data to serial data via I²C interface and vice versa, ideal for expanding I/O capabilities in compact designs.2. Integrated Power-On Reset – Built-in POR circuit ensures reliable startup to default state.3. Programmable Interrupt Outputs – Two configurable interrupt source outputs simplify event-driven designs.4. Flexible Input Polarity – Polarity flip register allows GPIO input polarity to be configured as needed.5. Wide Operating Range – Supports temperatures from -40°C to 85°C and voltages from 1.8V to 5.5V, suitable for varied environments.Product Details:This I/O expander module uses I²C communication to add 16-bit parallel-to-serial conversion with reliable performance. The integrated power-on reset ensures stable initialization, while programmable interrupts and configurable input polarity offer design flexibility. With a low typical operating current of 1 µA and support for high-speed I²C communication up to 1.7 MHz, it is a practical choice for IoT applications, motherboards, and embedded systems. Its compact size saves space without sacrificing functionality.Specifications:- Operating Temperature: -40°C to 85°C- Operating Voltage: 1.8V to 5.5V- I²C Communication Frequency: Up to 1.7 MHz- Typical Operating Current: 1 µA- Device Type: I/O Expander Module- Color: Black- Material: Plastic- Size: 2.75 x 2.2 cm