Product Overview: PCA9545CPW,118

The PCA9545CPW,118 is a high-quality, 4-channel I²C-bus switch with an interrupt logic, designed and manufactured by NXP Semiconductors. This versatile integrated circuit (IC) allows for the connection of multiple I²C devices with the same address to a single I²C bus, significantly expanding the capabilities of the bus without causing address conflicts.

Key Features

• Multiple Channel Access: The device offers four bidirectional translating switches that can be controlled via the I²C bus, providing access to multiple downstream channels simultaneously.
• Channel Selection: The PCA9545CPW,118 allows for channel selection via I²C bus commands, which means that any combination of the four channels can be selected at the same time.
• Interrupt Function: An interrupt input pin for each of the four connected slave peripherals is provided, allowing the master to acknowledge if any of the downstream I²C devices require attention.
• Low Standby Current: The IC is optimized for low standby current, which is crucial for power-sensitive applications.
• Compatibility: It is compatible with both 3.3V and 5V power supplies, making it suitable for a wide range of applications.

Applications

The PCA9545CPW,118 is ideal for applications where multiple I²C devices with the same address need to be connected to a single I²C bus. This includes, but is not limited to:

• Server systems and server motherboard management
• Advanced TCA (ATCA) systems
• Telecommunication equipment
• Industrial control systems
• Networking equipment

Package and Quality

The PCA9545CPW,118 is packaged in a TSSOP-24 (Thin Shrink Small Outline Package), which is known for its compact footprint and reliability in automated assembly processes. NXP Semiconductors ensures that each IC meets rigorous quality and performance standards, providing a reliable solution for system designers and engineers.

In summary, the PCA9545CPW,118 by NXP Semiconductors is a highly functional I²C-bus switch that can significantly enhance the functionality of I²C systems by enabling the connection of multiple devices with identical addresses without conflict, while also offering interrupt support for efficient communication and power management.