The DS25BR440 is a 3.125 Gbps Quad LVDS buffer optimizedfor high-speed signal routing and repeating over lossyFR-4 printed circuit board backplanes and balanced cables.Fully differential signal paths ensure exceptional signal integrityand noise immunity.The DS25BR440 features two levels of transmit pre-emphasis(PE) and two levels of receive equalization (EQ). Both ofthese features compensate for interconnect losses and ultimatelymaximize noise margin. A loss-of-signal (LOS) circuitmonitors each input channel and a unique LOS pin is assertedwhen no signal is detected at that input