QUOTE(xboxmods2977 @ Mar 23 2012, 06:07 PM)
Looks to me that this chip has the same pinout as the LM1881n. So, you would use/wire it just the same.
H-Sync is output on pin 7 of this chip, so you would de-solder the line to pin 1 on your 8-pin socket and solder it to pin 7.
Found another one too like this. The GS4981 is also a video sync separator with true H-sync output, but with these chips, it looks like you may need to invert the H-Sync line. Not positive about that tho. Worth a shot.
I just realized that one of the issues with the LM1881 is that it outputs a composite sync signal into the VGA monitors H-Sync line, which some monitors (and HDTVs) will not like. This is one of the reasons why the LM1881 isn't 100% compatible with all VGA monitors. I cannot believe I never noticed this before.
Also a side note, the EL4581 does not have H-Sync out. It is the same as the LM1881, according to the datasheet.This post has been edited by xboxmods2977: Mar 30 2012, 03:56 AM