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MAX3387E
3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones

Separate Logic Supplies Ensure Compatibility with Mixed ASIC Logic Levels


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 248kB)
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The MAX3387E 3V powered EIA/TIA-232 and V.28/V.24 is a communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. The MAX3387E has three receivers and three transmitters. All RS-232 inputs and outputs are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, ±8kV using the IEC 1000-4-2 Contact Discharge method, and ±15kV using the Human Body Model.

A proprietary low-dropout transmitter output stage enables true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. The MAX3387E is capable of running at data rates up to 250kbps while maintaining RS-232 compliant output levels.

The MAX3387E has a unique VL pin that allows interoperation in mixed-logic voltage systems. Both input and output logic levels are pin programmable through the VL pin. The MAX3387E is available in a space-saving TSSOP package.

Key Features   Applications/Uses
  • VL Pin for Compatibility with Mixed-Voltage Systems
  • ±15kV ESD Protection on Rx Inputs and Tx Outputs
  • Low 300µA Supply Current
  • Guaranteed 250kbps Data Rate
  • 1µA AutoShutdown Plus™ with Receivers Active
  • Meets EIA/TIA-232 Specifications Down to 3.0V

 
  • Battery-Powered Applications
  • Cellular Data Cables
  • Handheld Equipment
  • PDAs and PDA Cradles
  • Peripherals
  • Subnotebook and Palmtop Computers

    Key Specifications:  RS-232 Line Driver/Receivers
    Part Number VSUPPLY
    (V)
    Tx Rx Data Rate
    (kbps)
    ICC
    (mA)
    Internal Charge Pump Ext. Caps Cap. Value
    (µF)
    ESD Protect.
    (±kV)
    Rx Active in Shutdn Package/Pins Price
    min typ nom See Notes
    MAX3387E 
    3.3
    5
    3 3 250 0.3 Yes 4 0.1 15 3
    TSSOP/24
    $2.98 @1k
    See All RS-232 Line Driver/Receivers (152)

    Diagram
    MAX3387E: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1561; Rev 2; 2001-06-12
    This page last modified: 2007-06-04


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