LM1881
LM1881 Description
Video Sync Separator
LM1881 Vendor
National Semiconductor
LM1881 Categories
LM1881 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)
  • -40°C to +85°C operation (LM1881-X)
LM1881 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.

LM1881 Datasheet and Application Notes
ParameterValue
Temperature Min (deg C)0000000000.0000
Temperature Max (deg C)70
FunctionSync Separator
Supply Voltage (Volt)5
OtherSupply Voltage5V to 12V
DisplayTypeCRT
Products related to LM1881
LM1881N   LM1881M-X   LM1881N-X   LM1881MX   
LM1881M   LM1881MX-X   

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