NOT RECOMMENDED FOR NEW DESIGNS RECOMMENDED REPLACEMENT PART ISL32483E, ISL32485E DATASHEET Fault Protected, Extended CMR, RS-485/RS-422 Transceivers with Cable Invert ISL31483E, ISL31485E Features The ISL31483E and ISL31485E are fault protected, 5V powered Fault protected RS-485 bus pins up to 60V differential transceivers that exceed the RS-485 and RS-422 Extended common mode range 25V standards for balanced communication. The RS-485 transceiver More than twice the range required for RS-485 pins (driver outputs and receiver inputs) are fault protected up to Cable invert pins 60V. Additionally, the extended common mode range allows corrects for reversed cable connections while maintaining Rx these transceivers to operate in environments with common mode full fail-safe functionality voltages up to 25V (>2x the RS-485 requirement), making this fault protected RS-485 family one of the most robust on the Full fail-safe (open, short, terminated) RS-485 receivers market. 1/4 unit load (UL) for up to 128 devices on the bus Transmitters deliver an exceptional 2.5V (typical) differential High Rx I for opto-couplers in isolated designs OL output voltage into the RS-485 specified 54 load. This yields Hot plug circuitry - Tx and Rx outputs remain three-state during better noise immunity than standard RS-485 ICs, or allows up to power-up/power-down six 120 terminations in star network topologies. Slew rate limited RS-485 data rate . 1Mbps Receiver (Rx) inputs feature a Full Fail-Safe design, which Low quiescent supply current 2.3mA ensures a logic high Rx output if Rx inputs are floating, shorted, or on a terminated but undriven (idle) bus. Ultra low shutdown supply current . 10A The ISL31483E and ISL31485E include cable invert functions Applications that reverse the polarity of the Rx and/or Tx bus pins in case the cable is misconnected. Unlike competing devices, Rx full fail-safe Utility meters/automated meter reading systems operation is maintained even when the Rx input polarity is High node count RS-485 systems switched. PROFIBUS and RS-485 based field bus networks and factory automation Security camera networks Building lighting and environmental control systems Industrial/process control networks 30 25 VID = 1V B 25 A 12 20 15 0 10 -7 -12 5 RO -20 0 -25 -5 STANDARD RS-485 CLOSEST ISL3148XE TIME (400ns/DIV) TRANSCEIVER COMPETITOR FIGURE 1. EXCEPTIONAL Rx OPERATES AT 1Mbps EVEN WITH FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON MODE 25V COMMON MODE VOLTAGE RANGE vs STANDARD RS-485 DEVICES May 13, 2015 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas LLC 2010, 2011, 2015. All Rights Reserved FN7638.4 Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. VOLTAGE (V) COMMON MODE RANGEISL31483E, ISL31485E Table of Contents Ordering Information 3 Pin Configurations . 4 Pin Descriptions . 4 Truth Tables . 5 Typical Operating Circuits 5 Absolute Maximum Ratings . 6 Thermal Information . 6 Recommended Operating Conditions 6 Electrical Specifications . 6 Test Circuits and Waveforms 9 Application Information . 11 Receiver (Rx) Features . 11 Driver (Tx) Features 11 High Overvoltage (Fault) Protection Increases Ruggedness 11 Widest Common Mode Voltage (CMV) Tolerance Improves Operating Range . 11 Cable Invert (Polarity Reversal) Function 11 High VOD Improves Noise Immunity and Flexibility . 12 Hot Plug Function . 12 Data Rate, Cables and Terminations . 12 Built-in Driver Overload Protection . 12 Low Power Shutdown Mode . 13 Typical Performance Curves . 14 Die Characteristics . 15 Revision History 16 About Intersil 16 Package Outline Drawing 17 M14.15 17 M8.15 . 18 Submit Document Feedback FN7638.4 2 May 13, 2015