LM1881 Video sync splitter, 0.5-V to 2-amplitude standard negative-going sync Composite and vertical sync from NTSC, PAL(1), and SECAM video signals to provide timing information, including burst or back porch timing, and single- and dual-domain extracts information. Vs. The integrated circuit is also capable of providing synchronization separation for non-standard, faster horizontal rate video signals. Vertical output is produced on the rising edge of the first serration during the vertical synchronous period. If the above-mentioned rising edge does not occur within the externally set delay time, such as for a non-standard video signal, a default vertical output is produced after a time delay.
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