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



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Typical Application
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Connection Diagram
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Typical Performance
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Paramaters / 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 


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


More Application Notes
TitleSizeDateOther
Language
AN-402: LM2889 RF Modulator210
Kbytes		4-Nov-95 

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

RoHS Status



SOIC NARROW		Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
ARROWWorldwide846
AVNET-EMWorldwide125
BRITESTONESouth Korea2
DIGIKEYWorldwide0
FARNELLEurope and Asia2102
FUTUREWorldwide1100
NEWARKAmericas185
RS COMPONENTSWorldwide283
TAYLORAmericas251
$1.42 each at 1K+ pcsrail
of
95
LM1881MX/NOPB
LM1881MX

RoHS Status



SOIC NARROW		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
BRITESTONESouth Korea10516
DIGIKEYWorldwide2883
FUTUREWorldwide1100
KEIKONGAsia Pacific47500
TECHMOSAAsia Pacific5000
$1.42 each at 1K+ pcsreel
of
2500
LM1881N/NOPB
LM1881N

RoHS Status



MDIP		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AECO TECHAsia Pacific1000
AVNET-EMWorldwide37
BRITESTONESouth Korea322
DIGIKEYWorldwide409
FARNELLEurope and Asia811
FUTUREWorldwide835
KEIKONGAsia Pacific14560
NEWARKAmericas532
RS COMPONENTSWorldwide335
TAYLORAmericas241
$1.42 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/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

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

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHS
Status		CAD SymbolsModelsPackage
Marking
Format
LM1881M/NOPB
LM1881M
SOIC NARROW81
1		260
235		DetailN/AN/A
NSZXTT
LM
1881M
LM1881MX/NOPB
LM1881MX
SOIC NARROW81
1		260
235		DetailN/AN/A
NSZXTT
LM
1881M
LM1881N/NOPB
LM1881N
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/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance 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/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance 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 9-Feb-2010]