CTS Electronic Components 347LB6C2457T VCXO Oscillators 7.0mm x 5.0mm Surface Mount HFF LVPECL VCXO, 245.760000MHz, 3.3V, Stab 20ppm, -20 C/+70 C, 50 APR, Pin 2 Enable, Phase Jitter 90fs typical, 1k/reel