MAX3083 Datasheet

• For Fault-Tolerant Applications:
  MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4- Unit Load, +3.3V RS-485 Transceiver
• For Low-Voltage Applications:
  MAX3362: +3.3V, High-Speed, RS-485/RS-422 Transceiver in a SOT23 Package
• For Multiple Transceiver Applications:
  MAX3030E-MAX3033E: ±15kV ESD-Protected, +3.3V, Quad, RS-422 Transmitters
  MAX3040-MAX3045: ±10kV ESD-Protected, Quad, +5V, RS-485/RS-422 Transmitters

• Industrial-Control Local Area Networks
• Level Translators
• RS-422/RS-485 Communications
• Transceivers for EMI-Sensitive Applications

The MAX3083 high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3083 offer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps.

These transceivers typically draw 375µA of supply current when unloaded, or when fully loaded with the drivers disabled.

All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. The MAX3083 are intended for full-duplex communications. It also features independently programmable receiver and transmitter output phase via separate pins.