The ISL59444 is a single-output 4:1 MUX-amp. The MUX-amp has a fixed gain of 1 and a 1GHz bandwidth. The ISL59444 is ideal for professional video switching, HDTV, computer display routing, and other high performance applications. ISL59444EVAL1 Evaluation Board User’s Guide Application Note April 19, 2005 AN1184.0 Introduction High Frequency Layout Considerations The ISL59444EVAL1 evaluation board contains all the At frequencies of 500MHz and higher, circuit board layout circuitry needed to characterize critical performance may limit performance. The following layout guidelines are parameters of the ISL59444 single 4:1 MUX-amplifier, over a implemented on the evaluation board: variety of applications. ……