Product Overview: PCA9543APWRG4 from Texas Instruments

The PCA9543APWRG4 is a high-performance, low-voltage 2-channel I²C-bus multiplexer with interrupt logic from Texas Instruments. Designed to function optimally in applications requiring isolation between different I²C buses, this multiplexer allows two downstream channels to be selected from one upstream channel, effectively increasing the number of devices that can be connected to a single I²C bus.

Key Features

• Multiple I²C Channels: The device provides two bidirectional translating switches that can be controlled via the I²C bus, enabling access to multiple I²C devices with overlapping addresses.
• Low Standby Current: With its low-power consumption design, the PCA9543APWRG4 ensures minimal impact on the overall power budget of the system.
• Interrupt Function: Each channel has a dedicated interrupt input which can be used to alert the upstream master if any downstream device within that channel requires attention.
• Wide Operating Voltage Range: The PCA9543APWRG4 operates across a wide voltage range of 2.3V to 5.5V, making it suitable for a variety of low-voltage applications.
• High Noise Filter: The built-in noise filter on the I²C bus inputs suppresses spurious noise to maintain signal integrity.

Applications

The PCA9543APWRG4 is ideal for a wide range of applications, particularly where multiple I²C devices with conflicting addresses must be connected. These include:

• Server systems and data centers
• Industrial control systems
• Networking equipment
• Consumer electronics
• Medical equipment

Package and Quality

Encased in a TSSOP-16 package, the PCA9543APWRG4 is designed with a compact footprint for space-constrained applications. Texas Instruments maintains a commitment to high-quality manufacturing processes, ensuring that this multiplexer meets stringent industry standards for reliability and performance.

With its robust design and versatile functionality, the PCA9543APWRG4 from Texas Instruments stands out as a crucial component for systems requiring efficient I²C bus management and device communication.