WS3085W

The WS3085W is a 3.3V/5V, half-duplex, ±15kV ESD-protected RS-485/RS-422 transceiver IC, integrating one driver and one receiver. It features enhanced slew rate limiting to reduce output EMI and reflections caused by mismatched terminations, enabling error-free data transmission at 500kbps. The receiver input impedance is 1/8 unit load, allowing up to 256 transceivers to be connected on the bus for half-duplex communication. All driver outputs provide ±15kV HBM ESD protection. The device is offered in an 8-pin SO package and operates over a temperature range of -40°C to +125°C.

Applications

• Isolated RS-485 interface
• Energy meters
• Industrial control
• Industrial motor drives
• Automatic HVAC systems

Key features

• 3.3V/5V supply voltage
• Enhanced slew rate limiting to reduce output EMI and reflections caused by mismatched termination, enabling error-free data transmission at 500kbps
• Communication port with ±15kV human body model ESD protection
• Fail-safe function
• 1/8 unit load, up to 256 transceivers on a single bus
• 8-pin SO package