LTC4306CUFD - 4-Channel 2-Wire Bus Multiplexer with Bus Buffer

The LTC4306CUFD from Linear Technology is a high-performance, 4-channel 2-wire bus multiplexer with an integrated bus buffer that provides seamless channel switching for I2C and other bidirectional serial buses. This device is designed to enable one of several downstream channels to be selected and connected to the upstream channel, making it an ideal solution for applications that require multiple I2C buses or devices with the same addresses.

Key Features

• 4-Channel Multiplexing: The LTC4306CUFD allows for easy switching between four separate I2C bus channels, increasing system flexibility and simplifying design.
• Level Translation: With its built-in level translators, the device supports voltage level translation between 1.0V and 5.5V, enabling communication between devices operating at different voltage levels.
• Buffered Rise Time Accelerators: The onboard rise time accelerators provide strong pull-up currents during rising edges, improving signal integrity and allowing for longer bus lengths and higher data rates.
• Disconnect and Off Features: The LTC4306CUFD can disconnect the input bus from all output buses and also features an OFF state for power-down mode, contributing to power savings and system protection.
• Stuck Bus Recovery: The device is equipped with a stuck bus recovery feature to resolve data line lockup situations, ensuring reliable operation.
• High Noise Margin: Enhanced noise margin and filtering capabilities make this device robust against noise and glitches on the bus.

Applications

• Server and Telecom Infrastructure
• Networking Equipment
• Multi-Master I2C Systems
• AdvancedTCA Systems
• Industrial Control Systems

The LTC4306CUFD is presented in a 20-pin QFN package and is specified for operation from -40°C to 85°C, making it suitable for a wide range of industrial and commercial environments. With its combination of flexibility, performance, and robustness, the LTC4306CUFD is an excellent choice for complex systems requiring multiple I2C channels and devices.