LVDS, that's means low power differential signals,
the v+ and v- have the invert pase, and the swing magnitude can not reah rail-to-rail, so the peak value is less than power vdd.
Added after 3 minutes:
low swing magnitude can translate high speed signal,
the work well case can large than 500Meg. you can refer the IEEE LVDS & RSDS standard.
Added after 2 minutes:
LVDS is current driven data interface, the transmitter current can reach 1mA series a 100 ohm resistor.