LTM2881IY-3#PBF

LTM®2881 is a complete galvanically isolated full-duplex RS485/RS422 µModule® (micromodule) transceiver. No external components are required. A single supply powers both sides of the interface through an integrated, isolated, low noise, efficient 5V output DC/DC converter. Coupled inductors and an isolation power transformer provide 2500VRMS of isolation between the line transceiver and the logic interface. This device is ideal for systems where the ground loop is broken allowing for large common mode voltage variation. Uninterrupted communication is guaranteed for common mode transients greater than 30kV/μs. Maximum data rates are 20Mbps or 250kbps in slew limited mode. Transmit data, DI and receive data, RO, are implemented with event driven low jitter processing. The receiver has a one-eighth unit load supporting up to 256 nodes per bus. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply.

• Isolated DC power: 5V at up to 200mA
• No external components required
• Integrated selectable 120 ohm termination
• 3.3V operation
• Maximum continuous working voltage: 560VPEAK
• High input impedance failsafe RS485 receiver
• Current limited drivers and thermal shutdown
• Compatible with TIA/EIA-485-A and PROFIBUS
• High impedance output during internal fault condition, low current shutdown mode (<lt/> 10µA)
• 15mm × 11.25mm BGA package

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