Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers

Please check latest availability status for a specific part variant.


The MAX3080-MAX3089 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 MAX3080/MAX3081/MAX3082 feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3083/MAX3084/MAX3085 offer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The MAX3086/MAX3087/MAX3088's driver slew rates are not limited, making transmit speeds up to 10Mbps possible. The MAX3089's slew rate is selectable between 115kbps, 500kbps, and 10Mbps by driving a selector pin with a single three-state driver.

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 MAX3082/MAX3085/MAX3088 are intended for halfduplex communications, while the MAX3080/MAX3081/ MAX3083/MAX3084/MAX3086/MAX3087 are intended for full-duplex communications. The MAX3089 is selectable between half-duplex and full-duplex operation. It also features independently programmable receiver and transmitter output phase via separate pins.
MAX3080, MAX3083, MAX3086: Pin Configuration MAX3080, MAX3083, MAX3086: Pin Configuration Enlarge+

Key Features

  • 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
Part NumberTx/RxDuplexVSUPPLY
Data Rate
Tx ENRx ENICC (Shutdn.)
Rx/Tx on BusRx Failsafe w/ InputsSlew Rate LimitingOper. Temp.
typmintypSee Notes
MAX3080 1Tx + 1RxFull50.375115YesYes0.001256Open or ShortedNo
-40 to +85
0 to +70
SOIC (N)/14
$1.62 @1k
MAX3081 Full115NoNo-No
SOIC (N)/8
$1.68 @1k
MAX3082 Half115YesYes0.001No
SOIC (N)/8
$1.72 @1k
MAX3083 Full500YesYes0.001No
SOIC (N)/14
$1.70 @1k
MAX3084 Full500NoNo-No
SOIC (N)/8
$1.70 @1k
MAX3085 Half500YesYes0.001No
SOIC (N)/8
$1.62 @1k
MAX3086 Full10000YesYes0.001No
SOIC (N)/14
$1.70 @1k
MAX3087 Full10000NoNo-No
SOIC (N)/8
$1.62 @1k
MAX3088 Half10000YesYes0.001No
SOIC (N)/8
$1.62 @1k
MAX3089 Half/Full10000YesYes0.001-
SOIC (N)/14
$1.70 @1k
See All RS-485/RS-422 Line Driver/Receivers (205)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources

IO-Link Transceiver with Integrated Protection

  • High Configurability and Integration Reduces SKU
  • Integrated Protection Enables Robust Systems
  • Optimized for Small Designs

100Mbps Full-Duplex 3V/5V RS-485/RS-422 Transceiver with High EFT Immunity

  • High-Speed Operation
  • Integrated Protection Increases Robustness
  • Flexibility for Many Different Applications