ANALOG DEVICES LTM2885IY#PBF RS422/RS485 Transceiver, 20Mbps, Open, Short, Terminated, 4.5 to 5.5V, -40°C to 85°C, BGA-42

LTM2885IY#PBF 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 6500VRMS of isolation between line transceiver and the logic interface. This device is ideal for systems where the ground loop is broken allowing for common mode voltage variation. Uninterrupted communication is guaranteed for common mode transients upto 50KV/?s. 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. It is used in applications such as isolated RS485/RS422 interface, industrial networks, breaking RS485 ground loops, isolated PROFIBUS-DP networks.

• RS485/RS422 transceiver: 6500VRMS for 1 minute, CSA (IEC/UL) approved, file #255632
• High ESD: ±15KV HBM on transceiver interface, 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, general-purpose CMOS isolated channel
• VCC supply voltage is 5V typical at (TA = 25°C. VCC = 5.0V, VL = 3.3V)
• VCC supply current in off mode is 10µA max at (TA = 25°C. VCC = 5.0V, VL = 3.3V)
• Receiver input resistance is 125Kohm typical at (TA = 25°C. VCC = 5.0V, VL = 3.3V)
• Maximum data rate (driver SLO = VCC2) is 20Mbps minimum at (TA = 25°C. VCC = 5.0V, VL = 3.3V)
• Driver rise or fall time (driver SLO = VCC2) is 4ns typical at (RDIFF = 54 ohm, CL = 100pF)
• Operating temperature range from -40°C to 85°C, 42-pin BGA package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party