These Intersil RS-485/RS-422 devices are ESD protected, fractional unit load (UL), BiCMOS, 5V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. Each driver output/ receiver input is protected against ±15kV ESD strikes, without latch-up. Unlike competitive devices, this Intersil family is specified for 10 tolerance supplies (4.5V to 5.5V).

Features

• RS-485 I/O Pin ESD Protection . . . . . . . . . . ±15kV HBM

- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM

• Fractional Unit Load Allows up to 256 Devices on the Bus

• Specified for 10 Tolerance Supplies

• High Data Rate Version (ISL81487E) . . . . . up to 5Mbps

• Slew Rate Limited Versions for Error Free Data Transmission (ISL8487E, ISL81487L) . . . . .up to 250kbps

• Low Current Shutdown Mode (Except ISL81487E). . . 0.5A

• Low Quiescent Supply Current:

- ISL8487E, ISL81487L . . . . . . . . . . . . . . . 145A (Max.)

- ISL81487E . . . . . . . . . . . . . . . . . . . . . . . . 420A (Max.)

• -7V to +12V Common Mode Input Voltage Range

• Three State Rx and Tx Outputs

• 30ns Propagation Delays, 5ns Skew (ISL81487E)

• Half Duplex Pinouts

• Operate from a Single +5V Supply (10 Tolerance)

• Current Limiting and Thermal Shutdown for Driver Overload Protection

• Pin Compatible Replacements for: MAX487E, (ISL8487E); LTC1487, ADM1487 (ISL81487L); MAX1487E, ST485ER (ISL81487E)

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• High Node Count Networks

• Automated Utility Meter Reading Systems

• Factory Automation

• Security Networks

• Building Environmental Control Systems

• Industrial/Process Control Networks