The PCA9546ABSQFN16 is a robust and versatile 4-channel I2C-bus switch with an interrupt logic, designed and manufactured by NXP Semiconductors. This advanced integrated circuit is engineered to provide seamless communication between a single master I2C-bus and its four selected downstream channels. It is housed in a compact 16-pin QFN package, making it an ideal solution for applications where space is at a premium.

Key Features

• Multi-Channel I2C Switch: The device enables up to four downstream channels to be selected individually, which allows for multiple I2C devices with identical addresses to be connected to different bus segments.
• Active-Low Interrupt Inputs: Each channel comes with an active-low interrupt input which is propagated to the master to signal an interrupt from the downstream I2C devices.
• High Compatibility: The PCA9546ABSQFN16 is compatible with I2C-bus specification and supports standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) I2C-bus modes.
• Low Power Consumption: Designed for efficient power usage, this device is optimal for battery-powered applications.
• Power-Up with All Switch Channels Deselected: The default state of the device at power-up ensures that all switch channels are deselected, which minimizes the possibility of communication conflicts on the I2C-bus during system power-up.

Applications

The PCA9546ABSQFN16 is suitable for a broad range of applications, particularly where multiple I2C devices need to be connected. This includes:

• Server and telecommunications infrastructure
• Industrial control systems
• Consumer electronics such as TV sets, home audio systems, and gaming consoles
• Medical equipment
• Automotive modules

Quality and Reliability

NXP Semiconductors is known for its commitment to quality and reliability, and the PCA9546ABSQFN16 is no exception. It is built to meet the high standards expected in professional and industrial environments, ensuring stable and reliable performance across a wide range of operating conditions.