DESCRIPTION
The LTM®2881 is a complete galvanically isolated full-duplex RS485/RS422 µModule® 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.
FEATURES
â– Isolated RS485/RS422 Transceiver: 2500VRMS
â– Isolated DC Power: 5V at Up to 200mA
â– No External Components Required
â– 20Mbps or Low EMI 250kbps Data Rate
■High ESD: ±15kV HBM on Transceiver Interface
■High Common Mode Transient Immunity: 30kV/μs
■Integrated Selectable 120Ω Termination
â– 3.3V (LTM2881-3) or 5.0V (LTM2881-5) Operation
â– 1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface
â– Common Mode Working Voltage: 560VPEAK
â– High Input Impedance Failsafe RS485 Receiver
â– Current Limited Drivers and Thermal Shutdown
â– Compatible with TIA/EIA-485-A Specification
â– High Impedance Output During Internal Fault Condition
■Low Current Shutdown Mode (< 10µA)
â– General Purpose CMOS Isolated Channel
■Small, Low Profile (15mm × 11.25mm × 2.8mm)
Surface Mount BGA and LGA Packages
APPLICATIONS
â– Isolated RS485/RS422 Interface
â– Industrial Networks
â– Breaking RS485 Ground Loops