What the 800 MHz ceiling means for your clock tree
The AD9513BCPZ is a 1:3 fanout buffer with a maximum frequency of 800 MHz. That 800 MHz ceiling sets the upper bound for distributing a reference clock to ADCs, DACs, or FPGAs. The 1:3 ratio means one input drives three outputs, which is enough for a three-channel receiver chain or a master clock fan-out to a PLL, an FPGA, and a test point. Both input and output paths are differential, which buys common-mode rejection on the clock line — important when the clock trace runs past a switching regulator or a noisy digital bus. The output can be configured as CMOS or LVDS, so you can match the logic family of the downstream device without an external level translator.