Product Overview
The MAX3080ECSD+ from Maxim is a 5V full-duplex RS-485/RS-422 transceiver supporting 10 Mbps data rate with ±15 kV ESD protection. Full-duplex operation uses separate driver and receiver channels for simultaneous bidirectional communication on 4-wire buses.
Key Specifications
| Function | Full-duplex RS-485/RS-422 transceiver |
| Data Rate | Up to 10 Mbps |
| Supply Voltage | 5V |
| ESD Protection | ±15 kV HBM on bus pins |
| Fail-Safe | Open/short/idle bus |
| Package | SOIC-14 (3.9×8.65mm) |
Working Principle
Separate driver (DI→Y/Z) and receiver (A/B→RO) channels enable simultaneous transmit and receive on a 4-wire bus. Driver output is enabled by DE, receiver by RE. True fail-safe receiver ensures a logic HIGH output when the bus is open, shorted, or all transceivers are idle (all outputs tri-stated). Hot-swap capability prevents glitches during plug-in.
Applications
- 4-wire RS-485 full-duplex network
- PROFIBUS-DP
- Multi-drop industrial communication
- Long-haul data link