ADM3483:  3.3 V Slew Rate Limited Half - Duplex Low Power Tranceiver

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, ...More

ADM3483:  3.3 V Slew Rate Limited Half - Duplex Low Power Tranceiver

Product Description

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 com-munication, while the ADM3483/ADM3485 are designed for half-duplex communication.

The ADM3483/ADM3488 feature slew rate limited drivers that minimize EMI and reduce reflections caused by improperly ter-minated cables, allowing error-free data transmission at data rates up to 250 kbps.

The ADM3485/ADM3490/ADM3491 transmit at up to 10 Mbps. The receiver input impedance is 12 kΩ, allowing up to 32 trans-ceivers 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.

Applications

  • Low-Power RS-485/RS-422 Applications
  • Telecom
  • Industrial Process Control
  • HVAC

    • Features

    • Operate with 3.3 V supply
    • Interoperable with 5 V logic
    • EIA RS-485/RS-422 Compliant over Full Common-mode Range
    • Data Rate Options:250kbps
    • Half and Full Duplex Options
    • Reduced Slew Rates for Low EMI
    • 2nA Supply Current in Shutdown Mode
    • Up to 32 Transceivers on a Bus
    • -7V to +12V Bus Common Mode Range
    • Specified over –40°C to +85°C Temperature Range
    • Available in 8-Lead SOIC

    Diagrams

    ADM3483 Diagram
    Functional Block Diagram for ADM3483

    Specifications

    Protocols RS-422,RS-485
    Pwr Supply (Vnom) +3.3
    #Tx 1
    # Rx 1
    Data Rate 250kbps
    Low Power Shutdown Yes
    Operating Temp Range -40 to +85

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