The NXP PA9542A is a high-performance, dual bidirectional I²C-bus and SMBus multiplexer that provides an outstanding solution for applications requiring the routing of I²C signals to multiple downstream destinations. Its robust design allows for enhanced system flexibility and efficiency, making it an ideal choice for a wide range of advanced industrial, automotive, and consumer electronics.

Key Features

• Channel Selection: The PA9542A features 2 selectable channels via I²C-bus, enabling connection to multiple I²C devices with the same address, which greatly simplifies design and layout constraints.
• High-Speed Interface: With support for I²C-bus speeds of up to 400 kHz, the PA9542A ensures rapid data transfer and communication with connected devices, making it suitable for high-performance applications.
• Low Standby Current: Its low standby current consumption is ideal for power-sensitive applications, contributing to overall system power efficiency.
• Interrupt Function: The integrated interrupt function allows for the propagation of interrupt signals from slave devices to the master, enhancing communication reliability.
• ESD Protection: The device is equipped with robust Electrostatic Discharge (ESD) protection, safeguarding the multiplexer against potential damage from static electricity.

Applications

The NXP PA9542A is versatile and can be utilized in a variety of applications, including:

• Server and telecom infrastructure
• Multi-zone entertainment systems
• Industrial control systems
• Medical electronics
• Automotive networks

Technical Specifications

• Supply Voltage: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Packaging: Offered in a TSSOP16 package, the PA9542A provides a compact footprint suitable for space-constrained applications.

With its advanced features and robust design, the NXP PA9542A is a reliable and efficient solution for expanding I²C-bus connectivity, ensuring seamless integration into a wide array of electronic systems.