The ADCLK925 has specifications for Vcc= 2.5V, 3.3V, but large device as ADCLK950 is only for Vcc= 3.3V+-10%. Is it possible to use ADCLK950 with Vcc= 2.5V?
the ADCLK950 data sheet states clearly in Table 4, page 4 that the supply voltage must remain between 2.97V and 3.63V, that is 3.3V+/-10%.
I suggest looking at the HMC6832 that according to its data sheet may be supplied at 2.5V and can have 8 LVPECL outputs (although not 10 like the ACLK950).
Use the selection table at https://www.analog.com/en/parametricsearch/10733#/ to find other alternatives. Because you asked about the ADCLK950, I assumed you are searching for fan out buffers that can drive in LVPECL mode.