3.3V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers

These Intersil RS-485/RS-422 devices are BiCMOS 3.3V 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 (3V to 3.6V).

The ISL83483 and ISL83488 utilize slew rate limited drivers which reduce EMI, and minimize reflections from improperly terminated transmission lines, or unterminated stubs in multidrop and multipoint applications.

Features

• Operate from a Single +3.3V Supply (10% Tolerance)

• Interoperable with 5V Logic

• High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 10Mbps

• Single Unit Load Allows up to 32 Devices on the Bus

• Slew Rate Limited Versions for Error Free Data Transmission (ISL83483, ISL83488) . . . . . .up to 250kbps

• Low Current Shutdown Mode (ISL83483, ISL83485, ISL83491). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15nA

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

• Three State Rx and Tx Outputs (Except ISL83488, ISL83490)

• 10ns Propagation Delay, 1ns Skew (ISL83485, ISL83490, ISL83491)

• Full Duplex and Half Duplex Pinouts

• Current Limiting and Thermal Shutdown for driver Overload Protection

• Pb-free available

Applications

• Factory Automation

• Security Networks

• Building Environmental Control Systems

• Industrial/Process Control Networks

• Level Translators (e.g., RS-232 to RS-422)

• RS-232 “Extension Cords”