Product Overview: NXP PCA9543BPW

The NXP PCA9543BPW is a high-performance, 2-channel I²C-bus switch with an interrupt logic, designed to provide multiplexing capabilities for I²C-bus applications. This innovative product enables two downstream channels to be selected from a single upstream I²C-bus, allowing for increased flexibility and efficiency in complex system designs.

Key Features

• I²C-Bus Interface: The PCA9543BPW complies with the I²C-bus specification and is capable of operating at speeds up to 400 kHz, making it suitable for a wide range of applications.
• Channel Selection: Via I²C-bus commands, any combination of the two channels can be selected, allowing for seamless communication with multiple I²C devices that may otherwise have address conflicts.
• Interrupt Functionality: Each channel comes with an interrupt input that is transmitted to the master upon activation, ensuring prompt attention to critical events.
• Low Standby Current: Designed to be power-efficient, the PCA9543BPW has a very low standby current, which is ideal for battery-powered and energy-saving applications.

Applications

The PCA9543BPW is particularly useful in applications where multiple I²C devices with the same address need to be accessed separately. Its applications span across a variety of industries, including:

• Server motherboards and computing systems
• Industrial control and automation
• Consumer electronics
• Telecommunications
• Networking equipment

Technical Specifications

The PCA9543BPW is housed in a TSSOP16 package, offering a compact footprint for space-constrained applications. It operates over a supply voltage range of 2.3V to 5.5V, making it compatible with both 3.3V and 5V logic levels. Additionally, it features an active LOW reset input that allows for easy system integration and setup.

Ordering Information and Packaging

The device is available in a 16-lead thin shrink small outline package (TSSOP) with the orderable part number PCA9543BPW. The product is provided in tape and reel packaging, facilitating efficient handling and placement during the manufacturing process.

For detailed product specifications, application notes, and support documents, please refer to the official NXP product datasheet for the PCA9543BPW.