±60V Fault Protected 3V to 5.5V RS485/RS422 Transceiver with Level 4 IEC ESD

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.

APPLICATIONS

* 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

* 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