Features and Benefits

  • Operate with 3.3 V supply
  • Interoperable with 5 V logic
  • EIA RS-485/RS-422 Compliant over Full Common-Range
  • Data Rate Options: 10 Mbps
  • Half and Full Duplex Options
  • Up to 32 Transceivers on a Bus
  • -7V to +12V Bus Common Mode Range
  • Specified over –40°C to +85°C Temperature Range
  • 8 ns skew
  • Available in 8-Lead SOIC

Product Details

The ADM3483 / ADM3485 / ADM3488 / ADM3490 / ADM3491 are low power, differential line transceivers designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes the ADM3483/ADM3485/ADM3488/ ADM3490/ADM3491 ideal for power-sensitive applications.

The ADM3488 / ADM3490 / ADM3491 feature full-duplex communication, while the ADM3483 / ADM3485 are designed for half-duplex communication.

The ADM3485 / ADM3490 / ADM3491 transmit at up to 10 Mbps. The receiver input impedance is 12 kΩ, allowing up to 32 transceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, then the thermal shutdown circuit forces the driver output into a high impedance state. If the inputs are unconnected (floating), the receiver contains a fail-safe feature that results in a logic high output state. The parts are fully specified over the commercial and industrial temperature ranges. The ADM3483 / ADM3485 / ADM3488 / ADM3490 are available in 8-lead SOIC_N; the ADM3491 is available in a 14-lead SOIC_N.


  • Low-Power RS-485 Applications
  • Telecom
  • Industrial Process Control
  • HVAC

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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Evaluation Boards

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.