2.4.2. True Differential Signaling I/O Termination
The True Differential Signaling buffer is compatible with the LVDS, RSDS, Mini-LVDS, and LVPECL standards. The True Differential Signaling and SLVS-400 buffers support 100 Ω differential on-chip termination (RD OCT). If you use an SLVS-400 receiver, the differential on-chip termination is always enabled.
Use OCT with these I/O standards to save board space and cost. OCT reduces the number of external termination resistors usage.