Product Overview: PCA9554D,112 by NXP Semiconductors

The PCA9554D,112 is a robust, low-voltage 8-bit General Purpose Input/Output (GPIO) expander with an I²C-bus/SMBus interface, designed and manufactured by NXP Semiconductors. This integrated circuit is part of a family of devices that significantly expands the number of I/Os available to a processor or microcontroller, providing enhanced interface flexibility and system management capabilities.

Key Features

• I²C Interface: The PCA9554D,112 utilizes the popular I²C serial bus interface, which allows for easy integration into most microcontroller architectures. The device operates at speeds up to 400 kHz (Fast-mode), making it suitable for a wide range of applications.
• 8-bit I/O Ports: It features 8 programmable I/O pins which can be configured as either inputs or outputs, providing versatility for interfacing with various peripheral devices.
• Low Power Consumption: Designed with power-sensitive applications in mind, this GPIO expander offers a low standby current, making it ideal for battery-operated and power-conscious designs.
• Interrupt Output: An interrupt output is available to indicate input state changes, reducing the need for the microcontroller to continuously poll the inputs, thereby optimizing system power efficiency.
• Wide Operating Voltage Range: The PCA9554D,112 operates over a wide voltage range from 2.3V to 5.5V, accommodating various system power rails and ensuring compatibility with both 3.3V and 5V logic levels.
• Polarity Inversion: Input polarity inversion is supported, allowing for flexibility in handling active-high or active-low signals.

Applications

The PCA9554D,112 is suitable for a multitude of applications where additional I/Os are needed. Common uses include:

• Servers
• Personal Computers
• Embedded Systems
• Industrial Control Systems
• Consumer Electronics

Package and Quality

The device is offered in a space-saving 16-pin SOIC package, ensuring a compact footprint for space-constrained applications. As with all NXP products, the PCA9554D,112 is manufactured to high-quality standards, ensuring reliability and performance for critical applications.