100 MHz ceiling — what it means for PCIe generation fit
Maximum output frequency is 100 MHz. That covers the reference clock requirement for PCIe Gen1 and Gen2 (100 MHz nominal) but falls short of the 400 MHz HCSL outputs needed for Gen3 and Gen4 reference clocks. If the design targets Gen3 or later, a 400 MHz-capable part like the 9ZXL0851EKKLF or 9ZXL1231EKILF is the correct fit.
The supply range is tight at 1.7V to 1.9V — the board's 1.8V rail must be within that window; a 1.8V LDO with ±3% tolerance keeps the clock generator inside its rated supply envelope.
For volume production or BOM freeze, the active status means no imminent obsolescence risk.