1/8 Unit Load, 5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers

These Intersil RS-485/RS-422 devices are “fractional” unit load (UL), BiCMOS, 5V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. Unlike competitive devices, this Intersil family is specified for 10 tolerance supplies (4.5V to 5.5V).

Features

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

• Specified for 10 Tolerance Supplies

• Class 3 ESD Protection (HBM) on all Pins. . . . . . . . >7kV

• High Data Rate Version (ISL81487). . . . . . . up to 5Mbps

• Slew Rate Limited Versions for Error Free Data Transmission (ISL8487, ISL81483) . . . . . . .up to 250kbps

• Low Current Shutdown Mode (Except ISL81487) . . 0.5μA

• Low Quiescent Supply Current:

- ISL8487, ISL81483. . . . . . . . . . . . . . . . . . 145μA (Max.)

- ISL81487 . . . . . . . . . . . . . . . . . . . . . . . . . 420μA (Max.)

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

• Three State Rx and Tx Outputs

• 30ns Propagation Delays, 5ns Skew (ISL81487)

• Half Duplex Pinouts

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

• Current Limiting and Thermal Shutdown for Driver Overload Protection

• Drop-In Replacements for: MAX487 (ISL8487); MAX1483 (ISL81483); MAX1487, LMS1487 (ISL81487)

• 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