[SI-LIST] 50ohm SSTL2 Tx

 Hi all, 
  I am asked to design SSTL2 Tx to drive 50ohm line (unterminated). What
i did is, sized my buffer to give first step equal to VDDS/2 at near end
with 50ohm line connected. Without giving any look to SSTL2 JEDEC specs.
It can drive SSTL2 Rx.
   The confusion is, is this realy a SSTL2 Tx?
   If Yes, how do i label it as class-I or class-II, because it comes
out to be some where in between the two? For class-II it is weak and for
class-I it is too strong.
   If No, than that means we cannot have good SSTL2 Tx to drive 50ohm
line (unterminated)?

I am stucked....please help, i am missing something.
Thanking in advance,
Regards
Rajat
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