Hi, after a while of reading some info today, I found out that the LMH1251 built-in sync separator doesn't support 1080p resolutions at framerates higher than 30 Hz, so I tought that using LM1881 would solve the problem, but there are no places that can confirm that it supports 1080p high speed framerates, so my next natural decision was to use an LMH1980, which is the succesor to the LM1881 and also officialy supports 1080p at high speed framerates, but i've got two problems, I have to order it from National and then, I have to do a major redesign of the PCB I was making. To make it short, if the LM1881 supports 1080p at high speed framerates, it's going to save me a lot of work and trouble, and also i can get easily where I live. Thanks for your time.

Hi, after a while of reading some info today, I found out that the LMH1251 built-in sync separator doesn't support 1080p resolutions at framerates higher than 30 Hz, so I tought that using LM1881 would solve the problem, but there are no places that can confirm that it supports 1080p high speed framerates, so my next natural decision was to use an LMH1980, which is the succesor to the LM1881 and also officialy supports 1080p at high speed framerates, but i've got two problems, I have to order it from National and then, I have to do a major redesign of the PCB I was making. To make it short, if the LM1881 supports 1080p at high speed framerates, it's going to save me a lot of work and trouble, and also i can get easily where I live. Thanks for your time.

First this is not a circuit design forum. I just happen to be one of the few here that does it. There are many circuit design forums mainly origionating from universities. Great for getting free advice and helping the students at the same time!

The LM1881 is a old part from the 1980s and does not support HDTV scan rates. I have tested it too years ago and it doesn't work.