National Semiconductor | High-performance Analog

 

 LM1881   
Video Sync Separator 		Click link to Download

Features
  • AC coupled composite input signal
  • >10 k input resistance
  • <10 mA power supply drain current
  • Composite sync and vertical outputs
  • Odd/even field output
  • Burst gate/back porch output
  • Horizontal scan rates to 150 kHz
  • Edge triggered vertical output
  • Default triggered vertical output for non-standard video signal (video games-home computers)

    • Description

    The LM1881 Video sync separator extracts timing information including composite and vertical sync, burst/back porch timing, and odd/even field information from standard negative going sync NTSC, PAL* and SECAM video signals with amplitude from 0.5V to 2V p-p. The integrated circuit is also capable of providing sync separation for non-standard, faster horizontal rate video signals. The vertical output is produced on the rising edge of the first serration in the vertical sync period. A default vertical output is produced after a time delay if the rising edge mentioned above does not occur within the externally set delay period, such as might be the case for a non-standard video signal.

    Also Recommended
    LMH1980▲High Definition Compatibility, Smaller Form Factor Version
    LMH1981▲High Definition Compatibility, Ultra-Low Jitter Version



    Typical Application
    click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


    Parameters / ValuesLM1881 LMH1980 LMH1981
    FunctionSync Separator Sync Separator Sync Separator
    Supported Video FormatsNTSC , SECAM , Bi-level sync only, PAL NTSC , SECAM , SD/PC bi-level and HD tri-level sync, 720p , 1080i/p , PC Sync on Green (VESA), 576i/p , 480i/p , PAL SD bi-level and HD tri-level sync, NTSC , 720p , 1080i/p , 576i/p , 480i/p , PAL
    Supply Voltage5 Volt 3.3 Volt 3.3 Volt
    OtherSupply Voltage5V to 12V 3.3V to 5V 3.3V to 5V
    Temperature Min0 deg C -40 deg C -40 deg C
    Temperature Max70 deg C 85 deg C 85 deg C

    Datasheets
    TitleSizeDateOther
    Language
    LM1881 Video Sync Separator688
    Kbytes    		3-May-06   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1681: Application Note 1681 Design Migration from the LM1881 to the LMH1980143
    Kbytes    		2-Aug-07日本語


    Other Technical Documents
    TitleTypeDate
    Video Circuit Clamps Under All ConditionsExternal Article 1998-04-23

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM1881M/NOPB

    LM1881M

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide268
    AVNET-EMWorldwide2
    BRITESTONESouth Korea2
    DIGI-KEYWorldwide2199
    FARNELLEurope and Asia1507
    MOUSERWorldwide695
    NEWARKAmericas908
    RS COMPONENTSWorldwide283
    TAYLORAmericas2246
    		$1.24 each at 1K+ pcsrail
    of
    95
    LM1881MX/NOPB

    LM1881MX

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2979
    BRITESTONESouth Korea10516
    DIGI-KEYWorldwide3230
    MOUSERWorldwide2441
    RSL MICROAsia Pacific25000
    TAYLORAmericas479
    TECHMOSAAsia Pacific5000
    		$1.24 each at 1K+ pcsreel
    of
    2500
    LM1881N/NOPB

    LM1881N

    RoHS Status

    MDIP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AECO TECHAsia Pacific1000
    ARROWWorldwide40
    AVNET-EMWorldwide266
    BRITESTONESouth Korea322
    DIGI-KEYWorldwide747
    FARNELLEurope and Asia161
    MOUSERWorldwide86
    NEWARKAmericas120
    RS COMPONENTSWorldwide335
    RSL MICROAsia Pacific10000
    TAYLORAmericas42
    		$1.24 each at 1K+ pcsrail
    of
    40

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM1881M-X
    		LMH1980MM
    		NATIONAL SEMICONDUCTOR
    		23 Feb 2007
    LM1881MX-X
    		LMH1980MM
    		NATIONAL SEMICONDUCTOR
    		23 Feb 2007
    LM1881N-X
    		LMH1980MM
    		NATIONAL SEMICONDUCTOR
    		23 Feb 2007

    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 LM1881.

    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 LM1881 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM1881M/NOPB

    LM1881M
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LM
    1881M
    LM1881MX/NOPB

    LM1881MX
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LM
    1881M
    LM1881N/NOPB

    LM1881N
    		508.252
    510.002
    		MDIP81
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYTTE#
    LM1881N

    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 LM1881.

    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 LM1881 is located at RoHS Status.

    CAD Symbols and Models
    N/A
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM1881MSLM04404600353250011002356520
    LM1881MXSLM04404600353250011002356520
    LM1881NSLM04404600353250011002356520

    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 LM1881.

    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 LM1881 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM1881M-X
    		LMH1980MM
    		NATIONAL SEMICONDUCTOR
    		23 Feb 2007
    LM1881MX-X
    		LMH1980MM
    		NATIONAL SEMICONDUCTOR
    		23 Feb 2007
    LM1881N-X
    		LMH1980MM
    		NATIONAL SEMICONDUCTOR
    		23 Feb 2007

    [Information as of 3-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation