The Si599 from Silicon Labs is a VCXO with Frequency 10 to 810 MHz, Temperature Stability +/-20 to 50 ppm, Supply Voltage 1.8 to 3.3 V, Current 90 mA, Jitter Phase Jitter: 0.7 ps, Period Jitter: 3 ps. Tags: Surface Mount. More details for Si599 can be seen below.