LTC2862A Datasheet

• Protected from Overvoltage Line Faults to ±60V
• 3V to 5.5V Supply Voltage
• 20Mbps or Low EMI 250kbps Data Rate
• ±40kV HBM ESD Interface Pins, ±15kV Other Pins
• Enhanced Receiver and Failsafe Noise Immunity
• IEC Level 4 ESD and EFT on Interface Pins
• Extended Common Mode Range: ±25V
• Guaranteed Failsafe Receiver Operation
• High Input Impedance Supports 224 Nodes
• 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
• Compliant with TIA/EIA-485-A
• Pin Compatible with LTC2862 and LT1785
• Available in DFN and Leaded Packages
• AEC-Q100 Qualified for Automotive Applications (LTC2862A#W)

• Supervisory Control and Data Acquisition (SCADA)
• Industrial Control and Instrumentation Networks
• Automotive and Transportation Electronics
• Building Automation, Security Systems and HVAC
• Medical Equipment
• Lighting and Sound System Control

The LTC2862A is a low power, 20Mbps or 250kbps RS485/RS422 transceiver operating on 3V to 5.5V supplies with ±60V overvoltage fault protection on the interface pins during all modes of operation, including power-down. Improvements were made to the LTC2862 for greater robustness and signal integrity: ±40kV HBM and Level 4 IEC ESD protection on the interface pins; increased resistance to electrical overstress; increased receiver noise immunity; additional receiver noise filtering on the LTC2862A-2; and an improved failsafe function optimized for high speed in the LTC2862A-1 and noise rejection in the LTC2862A-2. Low EMI slew rate limited data transmission is available in the 250kbps LTC2862A-2 option, while the LTC2862A-1 operates to 20Mbps.

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.