The DS91M125TMA from Texas Instruments is an LVDS multiplexer buffer with a 1 x 1:4 channel configuration and a 250 Mbps data rate, in a 16-SOIC package.
The DS91M125TMAX/NOPB from National Semiconductor is a buffer and multiplexer with a 1 x 1:4 channel configuration and a 250 Mbps data rate, in a 16-SOIC package. Its short description lists 125 MHz and a 1:4 M-LVDS repeater.