Product Overview: PCA9673DB,112 from NXP

The PCA9673DB,112 is a robust and versatile 16-bit I/O expander from NXP Semiconductors, designed to provide additional GPIO (General Purpose Input/Output) interfaces for microcontrollers where additional I/Os are needed. This device operates on the I²C-bus/SMBus, allowing seamless integration with most microcontroller architectures.

Key Features

• Extended I/O: The device extends the number of I/O points with 16 additional bi-directional I/Os, which can be used for input or output.
• I²C-bus/SMBus Compatibility: It supports both the I²C-bus and SMBus interfaces, with a frequency of up to 400 kHz, allowing for easy integration with a wide range of microcontrollers and processors.
• Low Standby Current: The PCA9673DB,112 is designed for low power consumption, with a low standby current which is ideal for battery-powered applications.
• Configurable Polarity: Input and output configuration settings are adjustable, and the polarity of the I/O expander is programmable, offering flexibility for various application requirements.
• Addressing: Up to eight PCA9673 devices can share the same I²C-bus/SMBus by adjusting the three hardware address pins, providing a total of up to 128 additional I/Os.

Applications

The PCA9673DB,112 is suitable for a wide range of applications, particularly where there is a need to expand the available I/Os without changing the main microcontroller. Common applications include:

• Server infrastructure
• Industrial control systems
• Home automation systems
• LED displays and indicators
• Embedded systems requiring additional inputs/outputs

Quality and Reliability

NXP's commitment to quality ensures that the PCA9673DB,112 meets high standards of reliability and performance. It is designed to operate over a wide temperature range, making it suitable for industrial and commercial environments. The device is also compliant with the RoHS directive, minimizing the environmental impact by excluding hazardous substances.