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MAX3185
±15kV ESD-Protected, EMC Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs


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Description
FULL DATA SHEET (PDF, 65kB)
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The MAX3185 is a complete DTE RS-232 serial port designed to meet the stringent ESD requirements of the European community. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

The MAX3185 has three RS-232 transmitters, five RS-232 receivers, and no charge pump, optimizing it for operation in desktop PC and motherboard applications. It is guaranteed to run at data rates up to 230kbps, providing compatibility with popular software for communicating with personal computers. Power-supply current is less than 300µA for IDD and ISS, and less than 1mA for ICC.

The MAX3185 is pin and functionally compatible with the industry-standard 75185, so existing designs can instantly become EMC compliant. The MAX3185 is available in an SO package and in the tiny SSOP that further reduces board space.

Key Features   Applications/Uses
  • Enhanced ESD Protection:
    • ±15kV-Human Body Model
    • ±8kV-IEC1000-4-2, Contact Discharge
    • ±15kV-IEC1000-4-2, Air-Gap Discharge
  • Latchup Free During an ESD Event
  • 20-Pin SSOP and SO Packages
  • Guaranteed 230kbps Data Rate
  • Flow-Through Pinout
  • Pin Compatible with SN75C185
  • Complete DTE Serial Port

 
  • Computers: Desktop, Workstation, Server
  • Equipment Meeting IEC 1000-4-2
  • Instruments
  • Motherboards

    Key Specifications:   RS-232 Line Driver/Receivers
    Part Number Supply Voltage (V) Number of Tx Number of Rx Data Rate (kbps) Typ. ICC Current (mA) Internal Charge Pump Number of Ext. Caps ESD Protection (±kV) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX3185  12
    5
    3 5 230 0.38 No 0 15 Yes SOIC/20
    SSOP/20
    58 -40 to +85
    0 to +70
    $1.23 @ 1k
    See All RS-232 Line Driver/Receivers (138)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX3185: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1076; Rev 0; 1996-09-01
    This page last modified: 2007-07-18



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