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LTC2865 - ±60V Fault Protected 3V to 5.5V RS485/RS422 Transceivers

The LTC®2862/LTC2863/LTC2864/LTC2865 are low power, 20Mbps or 250kbps RS485/RS422 transceivers operating on 3V to 5.5V supplies that feature ±60V overvoltage fault protection on the data transmission lines during all modes of operation, including power-down. Low EMI slew rate limited data transmission is available in a logic-selectable 250kbps mode in the LTC2865 and in 250kbps versions of the LTC2862-LTC2864. Enhanced ESD protection allows these parts to withstand ±15kV HBM on the transceiver interface pins without latchup or damage.

Extended ±25V input common mode range and full failsafe operation improve data communication reliability in electrically noisy environments and in the presence of large ground loop voltages.

Features Protected from Overvoltage Line Faults to ±60V 3V to 5.5V Supply Voltage 20Mbps or Low EMI 250kbps Data Rate ±15kV ESD Interface Pins, ±8kV All Other Pins Extended Common Mode Range: ±25V Guaranteed Failsafe Receiver Operation High Input Impedance Supports 256 Nodes 1.65V to 5.5V Logic Supply Pin (VL) for Flexible Digital Interface (LTC2865) MP-Grade Option Available (–55°C to 125°C) Fully Balanced Differential Receiver Thresholds for Low Duty Cycle Distortion Current Limited Drivers and Thermal Shutdown Pin Compatible with LT1785 and LT1791 Available in DFN and Leaded Packages Typical Application

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