LM1881M Datasheet PDF – Video Sync Separator

Part Number: LM1881M

Function: Video Sync Separator

Package: SOP, DIP 8 Pin

Manufacturer: National Semiconductor (Texas Instruments)

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LM1881M datasheet



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.

Acquired by Texas Instruments on September 23rd, 2011. [ … ]


LM1881M pinout.gi


1. AC coupled composite input signal
2. >10 kX input resistance
3. <10 mA power supply drain current
4. Composite sync and vertical outputs
5. Odd/even field output
6. Burst gate/back porch output
7. Horizontal scan rates to 150 kHz
8. Edge triggered vertical output
9. Default triggered vertical output for non-standard video signal (video games-home computers)



LM1881M Datasheet PDF Download

LM1881M pdf

Other data sheets are available within the file: LM1881, LM1881MX, LM1881N