TEXAS INSTRUMENTS LMH1981MT/NOPB

The LMH1981MT/NOPB is a multi-format Video Sync Separator, the input accepts standard analogue SD/ED/HD video signals with either bi-level or tri-level sync and the outputs provide all of the critical timing signals in CMOS logic, which swing from rail-to-rail (VCC and GND) including Composite, Horizontal and Vertical Syncs, Burst/Back Porch Timing, Odd/Even Field and Video Format Outputs. HSYNC features very low jitter on its leading (falling) edge, minimizing external circuitry needed to clean and reduce jitter in subsequent clock generation stages. The LMH1981 automatically detects the input video format, eliminating the need for programming using a microcontroller and applies precise 50% sync slicing to ensure accurate sync extraction at OH, even for inputs with irregular amplitude from improper termination or transmission loss. Its unique Video Format Output conveys the total horizontal line count per field as an 11-bit binary serial data stream.