
Exar Corporation
GENERAL DESCRIPTION
The XR3070-78X family of high performance RS-485/422 devices are designed for improved performance in noisy industrial environments and increased tolerance to system faults.
FEATURES
● 10% Higher SNR (Signal-to-Noise Ratio) compared to other RS-485 devices (1.65V vs. 1.5V)
● ±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
● +3.0V to +3.6V Operation (3.3V ± 10%)
● 300μA Idle Current, 1nA 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
● Operating Temperature Range: Industrial -40°C to 85°C Extended -40°C to 125°C
● Industry Standard 8 and 14 NSOIC Packages
TYPICAL APPLICATIONS
● Motor Control
● Security Systems
● Building and Process Automation
● Remote Utility Meter Reading
● Energy Monitoring and Control
● Long or Unterminated Transmission Lines