National Semiconductor | High-performance Analog

 

 MCP809   

3-Pin Microprocessor Reset Circuits
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Features
  • Precise monitoring of 3V, 3.3V, and 5V supply voltages
  • Fully specified over temperature
  • 140ms min. Power-On Reset pulse width, 240ms typical Active-low RESET# Output (MCP809) Active-high RESET Output (MCP810)
  • Guaranteed RESET Output valid for VCC>=1V
  • Low Supply Current, 15µA typ.
  • Power supply transient immunity
  • Description

    The MCP809/810 microprocessor supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.

    The function of the MCP809/810 is to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240ms after VCC rises above the threshold. The MCP809 has an active-low RESET# output, while the MCP810 has an active-high RESET output.

    Seven standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 3V supply voltages.

    With a low supply current of only 15µA, the MCP809/810 are ideal for use in portable equipment. The MCP809/MCP810 are available in the 3-pin SOT23 package.


    Applications

  • Microprocessor Systems
  • Computers
  • Controllers
  • Intelligent Instruments
  • Portable/Battery-Powered Equipment
  • Automotive



  • Typical Application
    *click for larger image


    Connection Diagram
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    Typical Performance
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    ParametersValues
    Power on Reset Yes
    Watchdog No
    Power Fail Input No
    Manual Reset No
    Reset Timeout Period 240 ms
    On/Off Pin No
    PowerGood / Error Flag Yes
    Input Min Voltage 1.2 Volt
    Input Max Voltage 5.5 Volt
    Output Current Undefined mA
    Output Voltage Undefined Volt
    RegType Supervisor
    Temperature Min -40 deg C
    Temperature Max 105 deg C

    Datasheets
    TitleSizeDateOther
    Language
    MCP809 3-Pin Microprocessor Reset Circuits151
    Kbytes
    21-Jun-01   

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    MCP809M3-2.93/NOPB

    MCP809M3-2.93

    RoHS Status


    SOT-23
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide1940
    $0.19 each at 1K+ pcsreel
    of
    1000

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    MCP809M3-2.63
    LM809M3-2.63
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3-3.08
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3-4.00
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3-4.38
    LM809M3-4.38
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3-4.63
    LM809M3-4.63
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3X-2.63
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-2.93
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-3.08
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-4.00
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-4.38
    LM809M3X-4.38
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3X-4.63
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for MCP809.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for MCP809 is located at RoHS Status.

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    MCP809M3-2.93/NOPB

    MCP809M3-2.93
    10.34
    10.399
    SOT-2331
    1
    260
    260
    DetailDownloadN/A
    SRB
    XTT

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for MCP809.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for MCP809 is located at RoHS Status.

    CAD Symbols and Models
    Download MCP809 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    MCP809M3-2.93CS065247473430552700011568301341

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for MCP809.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for MCP809 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    MCP809M3-2.63
    LM809M3-2.63
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3-3.08
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3-4.00
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3-4.38
    LM809M3-4.38
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3-4.63
    LM809M3-4.63
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3X-2.63
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-2.93
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-3.08
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-4.00
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    MCP809M3X-4.38
    LM809M3X-4.38
    NATIONAL SEMICONDUCTOR
    01 Dec 2009
    MCP809M3X-4.63
    NONE
    NATIONAL SEMICONDUCTOR
    16 Nov 2008

    [Information as of 9-Feb-2012]