The LMH1980 is an auto-detecting SD/HD/PC video sync separator ideal for use in a wide range of video applications, such as automotive LCD monitors, video capture & editing devices, surveillance & security equipment, and machine vision and inspection systems.

The LMH1980 accepts an analog video input signal with either bi-level or tri-level sync and automatically detects the video format, eliminating the need for external R_SET resistor adjustment required by other sync separators (e.g.: LM1881). The outputs provide timing signals in CMOS logic, including Composite, Horizontal, and Vertical Syncs, Burst/Back Porch Timing, and Odd/Even Field outputs. The HD flag output (pin 5) provides a logic low signal only when a valid HD video input with tri-level sync is detected. The HD flag can be used to disable an external switch-controlled SD chroma filter when HD video is detected, or enable it when SD video is detected. For non-standard video with bi-level sync and without vertical serration pulses, a default vertical sync pulse will be output and no horizontal sync pulses will be output during the vertical sync interval.

The LMH1980 is available in a space-saving 10-lead Mini-SO Package (VSSOP) and operates over a temperature range of −40°C to +85°C.

• Analog Video Sync Separation for NTSC, PAL, 480I/P, 576I/P, 720P, 1080I/P/PsF, and Many VESA-Compatible Timing Formats
• Composite Video (CVBS), S-Video (Y/C), and Component Video (YPBPR/GBR) and PC Graphics (RGsB) Interfaces
• SD/PC Bi-Level Sync & HD Tri-Level Sync Compatible
• Composite, Horizontal, and Vertical Sync Outputs
• Burst/Back Porch Timing, Odd/Even Field, and HD Detect Flag outputs
• Automatic Video Format Detection
• Fixed-Level Sync Slicing for Video Inputs from 0.5 to 2 VPP
• 3.3V to 5V Supply Operation

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• Function
• Sync separator
• Number of outputs
• 5
• Core supply voltage (V)
• 3.3, 5
• Output supply voltage (V)
• 3.3, 5
• Input type
• CMOS
• Output type
• CMOS
• Operating temperature range (C)
• -40 to 85
• Features
• Video sync separator
• Rating
• Catalog

LMH1980的完整型号有：LMH1980MM/NOPB、LMH1980MMX/NOPB，以下是这些产品的关键参数及官网采购报价：

LMH1980MM/NOPB，工作温度：-40 to 85，封装：VSSOP (DGS)-10，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMH1980MM/NOPB的批量USD价格：2.207（1000+）

LMH1980MMX/NOPB，工作温度：-40 to 85，封装：VSSOP (DGS)-10，包装数量MPQ：3500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LMH1980MMX/NOPB的批量USD价格：1.868（1000+）

LMH1980MMEVAL — 用于 LMH1980 的评估板

The LMH1980 Evaluation Board can be used to test the LMH1980 Auto-Detecting SD/HD/PC Video Sync Separator and as a reference for PCB layout design.

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