The PCF9535RGER from Texas Instruments is a high-performance, low-power I2C-bus/SMBus I/O expander that offers a flexible solution for general-purpose input/output (GPIO) expansion.

• Description: This innovative product is designed to enhance the functionality and performance of any microprocessor, microcontroller, or any device with an I2C-bus or SMBus interface.
• I/O Pins: The PCF9535RGER is equipped with 16-bit I/O pins that can be independently assigned as inputs or outputs.
• Applications: These pins can be used for a variety of functions, such as keypad interfacing, status indication, or control signaling.
• Operating Voltage: One of the key features of the PCF9535RGER is its low operating voltage, which ranges from 2.3V to 5.5V.
• Standby Current: Additionally, the product's low standby current consumption makes it ideal for battery-powered applications.
• Interrupt Output: The PCF9535RGER also has an interrupt output that can be configured to activate when any input state differs from its corresponding input port register state.
• Package: The PCF9535RGER is housed in a compact, surface-mount QFN package that measures just 4mm x 4mm.
• Operating Temperature: Despite its small size, the product is designed to deliver robust performance and reliability, with a wide operating temperature range of -40°C to 85°C.
• Hardware Reset: In addition, the PCF9535RGER is equipped with a hardware reset pin that allows for a quick and easy system reset, enhancing the overall system reliability and efficiency.