NXP PCA9543APW,118: 2-Channel I2C-Bus Multiplexer with Interrupt Logic

The PCA9543APW,118 is a highly integrated circuit from NXP Semiconductors designed to provide seamless interface expansion through I2C-bus multiplexing. This innovative device allows for the connection of up to two separate I2C-bus slave sub-systems to a single I2C-bus master, effectively managing multiple I2C devices that may otherwise have address conflicts, or require isolation from each other.

Key Features

• Two-Channel Multiplexing: The PCA9543APW,118 offers two bidirectional translating switches that can select I2C-bus slave sub-systems dynamically.
• Interrupt Logic: It incorporates interrupt logic that enables the I2C-bus master to recognize an interrupt from both of the connected slave sub-systems, thereby streamlining communication and enhancing system responsiveness.
• Low Standby Current: The device is designed for low power consumption, with a standby current that is particularly advantageous for battery-powered applications.
• Active-Low Reset Input: An active-low reset input allows the system to reset the I2C-bus multiplexer, ensuring reliable operation and easier management of connected devices.

Applications

The PCA9543APW,118 is suitable for a wide range of applications, including but not limited to:

• Server systems where multiple I2C-bus sub-systems need to be accessed independently without address conflict issues.
• Industrial control systems requiring the integration of multiple I2C sensors or devices.
• Consumer electronics that demand additional I2C-bus interfaces to accommodate various peripherals or components.

Technical Specifications

• Package: TSSOP-16 (Thin Shrink Small Outline Package)
• Supply Voltage: 2.3V to 5.5V, accommodating a wide range of system power designs.
• Operating Temperature Range: -40°C to +85°C, ensuring reliable operation across diverse environments.

With its robust feature set and flexible application potential, the NXP PCA9543APW,118 stands out as a reliable choice for system designers looking to optimize their I2C-bus architecture. Its ease of integration, coupled with NXP's reputation for quality semiconductor solutions, makes this multiplexer an essential component for complex electronic systems.