CMx21D485H-A

CM321D485H-A / CM521D485H-A converts logic levels to RS-485 protocol differential levels for signal isolation. It is an RS-485 protocol transceiver module integrating power isolation, signal isolation, RS-485 communication and bus protection using IC integration technology. The module has a built-in fixed-voltage isolated power supply and provides 2500VDC electrical isolation. It features automatic transmit/receive switching without a dedicated transmit/receive control pin, reducing design complexity. It can be easily embedded into user equipment to enable RS-485 network connectivity.

• Single input power supply
• With isolated output power pin
• Automatic data transceiving function
• Supports up to 128 nodes
• Extremely low electromagnetic interference (EMI)
• Operating temperature range: -40℃ ~ +85℃
• Integrated power isolation, signal isolation and bus ESD
• protection