NSI84085 is a high reliability isolated half duplex RS485 transceiver based on NOVOSENSE digital isolation technology. The NSI84085 is safety certified by UL1577 support 5kVrms insulation withstand voltages, while providing high electromagnetic immunity and low emissions at low power consumption. The Bus pins of NSI84085 is protected from ±8kV system level ESD to GND2 on Bus side. The device feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. The device has a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. The data rate of NSI84085 is 8Mbps. The device is slew limited to reduce EMI and reflections with improperly terminated transmission line.
Product Features
• Up to 5000Vrms insulation voltage
• Bus side power supply voltage: 3.0V to 5.5V
• VDD1 supply voltage: 2.5V to 5.5V
• High CMTI: ±150kV/μs
• High system level EMC performance: Bus Pins meet IEC61000-4-2: ±8kV ESD
• Fail-safe protection receiver
• Up to 256 transceivers on the bus
• Operation temperature: -40°C~125°C
• RoHS-compliant packages: SOP16 (300mil)
Safety Certificate
• UL recognition: SOP16 (300mil): 5000Vrms for 1 minute per UL1577
• CQC certification per GB4943.1
• CSA component notice 5A
• DIN EN IEC 60747-17 (VDE 0884-17)
Application
• Industrial automation system
• Isolated RS485 communication
• Smart electric meter and water meter
• Security and protection monitoring
Functional Block Diagram
All Resources
For more product information, please contact us.
