GENERAL DESCRIPTION

The XR33032/35/38 family of high performance half duplex RS-485 transceivers are optimized to operate over a wide range of supply voltage, from +2.8V to +5.5V. The analog bus pins can withstand direct shorts up to ±18V, and are protected against ESD events up to ±15kV.

FEATURES

● +2.8V to +5.5V Operating Range

● ±18V Fault Tolerance on Analog Bus pins

● Robust ESD (ElectroStatic Discharge) Protection:

■ ±15kV IEC 61000-4-2 Air Gap Discharge

■ ± 8kV IEC 61000-4-2 Contact Discharge

■ ±15kV Human Body Model

■ ± 4kV Human Body Model on non-bus pins

● 300µA Idle Current, 40nA Shutdown Current

● Enhanced Receiver Fail-Safe Protection for Open, Shorted, or Terminated but Idle Data Lines

● Hot-Swap Glitch Protection on DE and RE Pins

● Driver Short Circuit Current Limit and Thermal Shutdown for Overload Protection

● 1/8th Unit Load Allows up to 256 Devices on Bus

● Industry Standard 8 NSOIC Half Duplex Package

TYPICAL APPLICATIONS

● Isolated Multipoint RS-485 Data Buses

● Remote Nodes Powered by the Host

● Building Automation and HVAC

● Industrial Process Control Networks

● Remote Utility Meter Reading

● Energy Monitoring and Control