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 (1) 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.
• AC Coupled Composite Input Signal
• >10 kΩ 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
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