The NXP PCA9554BPW is a robust and versatile 8-bit I/O expander with an I²C-bus/SMBus interface. This compact component is designed to provide general-purpose remote I/O expansion for most microcontroller families, and it's especially suitable for applications where I/O pins are limited and additional inputs/outputs are needed. It comes in a convenient TSSOP-16 package, making it a space-saving solution for a variety of electronic designs.

Key Features

• I²C Interface: The PCA9554BPW operates at frequencies up to 400 kHz, providing a high-speed I²C interface that ensures seamless communication with microcontrollers and other I²C-compatible devices.
• 8-bit I/O Ports: Each of the eight I/Os can be configured as an input or output, allowing for a high degree of flexibility in connecting to sensors, switches, LEDs, and other peripherals.
• Interrupt Output: An interrupt output is provided that can be configured to alert the host microcontroller of input changes, thus reducing the need for the microcontroller to continuously poll the inputs.
• Low Standby Current: The device features a very low standby current, making it ideal for power-sensitive applications, including battery-powered and portable devices.
• Power Supply: It is designed to operate from a supply voltage ranging from 2.3V to 5.5V, accommodating a wide range of logic levels and making it suitable for interfacing with both 3.3V and 5V systems.
• Polarity Inversion: Input port polarity can be inverted, providing additional flexibility in interfacing with external components.

Applications

The PCA9554BPW is a versatile component that can be used in a broad array of applications. It is particularly useful in servers, personal computers, and industrial automation where additional I/Os are needed. It can also be found in consumer electronics, such as smart home devices, where its ability to expand I/O capabilities without the need for additional microcontroller pins is highly valued.

Ordering Information

The NXP PCA9554BPW is available for order under the part number PCA9554BPW,112. It is supplied in a TSSOP-16 package, which is suitable for surface-mount technology (SMT) assembly processes. For detailed specifications, datasheets, and ordering information, please refer to the official NXP Semiconductors website or contact an authorized distributor.