TI LM1881M/NOPB

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 Nonstandard Video Signal (Video Games-Home Computers)

• The outputs from the LM1881 can be used to gen-lock video camera/VTR signals with graphics sources
• provide identification of video fields for memory storage
• recover suppressed or contaminated sync signals
• provide timing references for the extraction of coded or uncoded data on specific video scan lines