CMT83089 High-Reliability Isolated RS-485 Transceiver
The CMT83089 is a high-reliability isolated RS-485 transceiver engineered with CMOSTEK digital isolation technology, offering UL1577-certified 5kVrms insulation withstand voltage and exceptional ±200kV/µs CMTI noise immunity. Featuring 10kVpk surge protection, bus ESD protection up to ±12kV to GND2, fail-safe architecture, and 1/8-unit-load impedance supporting up to 256 bus nodes, it delivers slew-rate limited 12Mbps transmission in a wide-body SOIC-16 package.
5 kVrms (UL1577)
±200 kV/µs
10 kVpk Surge
Up to 12 Mbps
2.5V to 5.5V
-40°C to +125°C
| Product Model | CMT83089 |
| Device Classification | High-Reliability Isolated RS-485 / RS-422 Transceiver |
| Isolation & Noise Immunity | CMOSTEK digital isolation; 5 kVrms insulation withstand (UL1577), ±200 kV/µs CMTI, 10 kVpk surge class |
| Bus Protection & ESD | ±12 kV system-level ESD to GND2 on bus pins; 8 kV component ESD rating |
| Network Loading Capacity | 1/8 unit-load receiver input impedance allowing up to 256 transceivers on a shared bus |
| Signal Integrity & Safety | Integrated fail-safe receiver circuitry (logic-high output on open/shorted inputs); slew-rate limited driver minimizing EMI and line reflections |
| Operating Mode & Speed | 12 Mbps high-speed data transmission (Half-Duplex / Full-Duplex network compatibility) |
| Package / Footprint | Wide-Body 16-Pin Small Outline IC (SOW16 / WB SOIC-16) |
CMT83085 High Reliability Isolated Half- Duplex RS-485 Transceivers 

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