SY56017R Datasheet, Micrel

an internal voltage reference is provided to bias the VT pin. The outputs are CML, with extremely fast rise/fall times .

The SY56017R is a fully differential, low voltage 1.2V/1.8V/2.5V CML 2:1 MUX with input equalization. The SY56017R can process clock signals as fast as 4.5 GHz or data patterns up to 6.4Gbps. The differential input includes Micrel’s unique, 3-pin in.