PLL-based clock generator with 166.6 MHz ceiling
The Cypress CY22150FZXI is a single-PLL clock generator and fanout distribution IC in a 16-TSSOP package. It accepts LVCMOS, LVTTL, or crystal inputs and delivers up to six CMOS outputs at frequencies up to 166.6 MHz. The integrated PLL lets you synthesize a clean clock from a lower-frequency reference, which is useful when the board has a single crystal but multiple clock domains need different rates.
The supply voltage spans 2.375 V to 3.465 V, covering 2.5 V and 3.3 V rails without an extra regulator.
1:6 fanout — sizing the clock tree
With a 1:6 input-to-output ratio, this part drives six loads from one PLL output. That is enough for a small FPGA bank, a handful of ADCs, or a local clock distribution on a mixed-signal board. The outputs are single-ended CMOS, not differential, so keep trace lengths short and impedance-matched if running near the 166.6 MHz ceiling.