CMT83085 replaces ISO3082DW . 200-Kbps, half-duplex, 2.5-kVrms isolated RS-485 & RS-422 transceiver-Products-Dinglian Microelectronics Co. LTD• Meets or exceeds TIA/EIA RS-485 requirements
• Signaling rates up to 20 Mbps
• 1/8 unit load – up to 256 nodes on a bus
• Thermal shutdown protection
• Low bus capacitance – 16 pF (typical)
• 50 kV/μs typical transient immunity
• Fail-safe receiver for bus open, short, idle
• 3.3-V inputs are 5-V tolerant
• Bus-pin ESD protection
– 12-kV HBM between bus pins and GND2
– 6-kV HBM between bus pins and GND1
• Safety-related certifications:
– 4000-VPK basic insulation, 560 VPK VIORM per DIN EN IEC 60747-17 (VDE 0884-17)
– 2500 VRMS isolation per UL 1577
– 4000 VPK isolation per CSA 62368-1
Safety-related certifications
• DIN VDE V 0884-11: 2017-01
• UL recognition: up to 5000Vrms for 1 minute per
UL1577
• CSA component notice 5A
• CQC approval per GB4943.1-2011
Up to 5000Vrms Insulation voltage
Bus side power supply voltage: 3.0V to 5.5V
VDD1 supply voltage: 2.5 to 5.5 V
High CMTI: ±200Kv/us
High system level EMC performance:
Bus Pins meet IEC61000-4-2±12 kV ESD
• Other Pins meet ±7 kV contact ESD
• Operation temperature: -40°C to 125°C
Fail-safe protection receiver
Slew rate limitation
Robust isolation barrier life:
• More than 40-year projected lifetime
Up to 256 transceivers on the bus
RoHS-compliant packages: SOIC 16 (wide body)
Applications
Industrial automatic control
Isolated RS-485 communication
Smart electric meter and water meter
Security and protection monitoring
