LMH1981MTX

The LMH1981MTX from Texas Instruments is a versatile multi-format video sync separator designed for broadcast and professional video equipment, including HDTV/DTV systems. It accepts standard analog SD/ED/HD video signals with bi-level or tri-level sync.

This device provides critical timing signals in CMOS logic, including Composite, Horizontal, and Vertical Syncs, Burst/Back Porch Timing, Odd/Even Field, and Video Format Outputs. It boasts superior jitter performance on the leading edge of HSync, minimizing the need for external circuitry. The LMH1981 automatically detects the input video format, simplifying integration without requiring microcontroller programming. It utilizes precise 50% sync slicing for accurate sync extraction, even with irregular input amplitudes.

The LMH1981MTX supports a core supply voltage of 3.3V or 5V and an output supply voltage of 3.3V or 5V. It is housed in a 14-pin TSSOP package with dimensions of 5 mm x 6.4 mm, covering an area of 32 mm². The operating temperature range is from -40°C to 85°C.

Key features include automatic video format detection, 50% sync slicing for video inputs from 0.5 V PP to 2 V PP, and compatibility with NTSC, PAL, 480I/P, 576I/P, 720P, and 1080I/P/PsF standards from Composite Video (CVBS), S-Video (Y/C), and Component Video (YP B P R /GBR) interfaces.