Overview of PCA9535PW,118

The PCA9535PW,118 is a robust, low-voltage 16-bit General Purpose Input/Output (GPIO) expander developed by NXP Semiconductors. This versatile IC is designed to provide additional GPIOs for microcontrollers with limited GPIOs, particularly in applications where space and power are at a premium. It is especially suitable for servers, personal electronics, and industrial control systems.

Key Features

• Interface: The device features an I2C-bus interface, supporting both 400 kHz Fast-mode and 1 MHz Fast-mode Plus (Fm+).
• Ports: It includes 16 GPIOs, configurable as either inputs or outputs, divided into two 8-bit ports (Port 0 and Port 1).
• Low Standby Current: Its low standby current is ideal for battery-powered applications, ensuring minimal power consumption when the device is not active.
• Polarity Inversion: The PCA9535PW,118 offers individual polarity inversion registers for each of the 16 input ports, allowing for easy interface with the connected microcontroller.
• Interrupt Output: An interrupt output is available and is activated when any input state differs from its corresponding Input Port register, enhancing the efficiency by negating the need for constant polling.
• Power Supply: It operates over a wide voltage range from 2.3V to 5.5V, making it suitable for various logic levels and supply voltages.

Package and Temperature Range

The PCA9535PW,118 comes in a TSSOP-24 package, which is lead-free and RoHS compliant. It is designed to operate over an industrial temperature range from -40°C to +85°C, ensuring reliability and performance under extreme conditions.

Applications

This GPIO expander is ideal for a wide range of applications, including:

• Server motherboards
• Embedded systems
• Personal electronics (e.g., smartphones, tablets)
• Industrial controls
• Home automation systems

The PCA9535PW,118 by NXP Semiconductors is a versatile and reliable solution for expanding the GPIO capabilities of microcontroller-based systems, while maintaining a low power footprint and providing robust performance across diverse applications.