Product Overview: NXP PCA9541PW/02,118

The NXP PCA9541PW/02,118 is a versatile, high-quality 2-to-1 I²C-bus master selector designed with multiplexing in mind. This innovative component allows two masters to communicate with a single slave device, effectively managing I²C-bus communications without conflicts. It is an essential tool for complex systems where multiple controllers need to interact with the same peripheral devices.

Key Features

• Multi-Master Support: The PCA9541PW/02,118 facilitates seamless communication by allowing two master devices to share a single I²C-bus connection with a slave device.
• Channel Selection: An active-low interrupt input is provided for each master, enabling easy channel selection via an external interrupt.
• Low Standby Current: With its low-power design, the device ensures minimal power consumption when in standby mode, making it suitable for power-sensitive applications.
• High Noise Immunity: Designed to withstand the rigorous demands of industrial environments, it features built-in noise-filtering capabilities to maintain signal integrity.
• Compatibility: The PCA9541PW/02,118 is compatible with I²C-bus Fast-mode Plus and supports standard I²C-bus protocols.

Applications

The PCA9541PW/02,118 is ideal for a range of applications, particularly in situations where system complexity requires the use of multiple I²C masters. Common use cases include:

• Redundant systems where a secondary controller takes over if the primary controller fails.
• Systems with multiple controllers that need to access the same peripheral devices without bus contention.
• Server systems where different subsystems need to access shared resources such as sensors or EEPROMs.

Technical Specifications

The device comes in a TSSOP16 package and operates over the -40°C to +85°C temperature range. It supports bus speeds of up to 1 Mbit/s and offers 5.5 V tolerant I/O ports despite operating at a supply voltage of 2.3 V to 5.5 V, ensuring compatibility with a wide range of I²C devices and systems.

Ordering Information

The NXP PCA9541PW/02,118 is available for order under the specified part number. For volume pricing, sample requests, or to locate a distributor, please visit the NXP Semiconductors official website or contact an authorized NXP distributor.