Product Overview: PCA9535AHF,128 from NXP Semiconductors

The PCA9535AHF,128 is a robust I/O expander from the reputable NXP Semiconductors, designed to provide additional I/O capabilities to microcontroller-based systems. This device operates as an interface between the high-speed I2C-bus and a wide range of peripherals, enhancing the functionality of microcontrollers with a limited number of I/O pins.

Key Features

• I2C Interface: The PCA9535AHF,128 communicates via a two-wire I2C-bus/SMBus serial interface, supporting standard (100kHz), fast (400kHz), and high-speed (3.4MHz) I2C modes.
• 16-bit I/O Port Expander: It provides 16 additional I/O ports that can be configured as inputs or outputs, allowing for significant expansion of I/O capabilities.
• Configurable Polarity: Input and output configuration registers allow for polarity inversion, enabling flexible adaptation to different logic signal requirements.
• Power Supply: This device operates over a wide voltage range from 2.3V to 5.5V, making it suitable for various applications and logic levels.
• Interrupt Output: An interrupt output is provided to signal the host microcontroller of an input change, which is particularly useful for wake-up and interrupt-driven applications.

Applications

The PCA9535AHF,128 is an ideal solution for expanding I/O ports in a variety of applications, including:

• Servers
• Personal computers
• Embedded systems
• Industrial control systems
• Consumer electronics

Package Information

The device is housed in a space-saving TSSOP package with 24 pins, designated as "HF", and is identified by the orderable part number PCA9535AHF,128. This package is optimized for reduced space and weight, making it suitable for compact PCB layouts.

Reliability and Quality

As with all NXP products, the PCA9535AHF,128 is manufactured to high standards, ensuring reliability and performance consistency. It is designed to meet the rigorous demands of modern electronic systems, providing a dependable solution for I/O expansion needs.