LMK5C33216: LVPECL Output Frequency

Hello,

LMK5C33216's data sheet defines 1,000 MHz as the Max LVPECL output frequency. I guess it means the LMK5C33216 can generate LVPECL clocks of up to at least 1,000 MHz. The data sheet also adds, "(2) An output frequency over the f_OUT max spec is possible, but the output swing may be less than the V_OD min spec," as a note in the section 7.5 Electrical Characteristics. How high can the LMK5C33216 generate LVPECL output frequency practically? Do you have a performance plot of LVPECL f_OUT vs V_OD, for example?

Best regards,
Shinichi Yokota