The MV197 from Morion, Inc. is a OCXO with Frequency 10 to 20 MHz, Supply Voltage 5 to 12 V, Phase Noise -161 to -160 dBc/Hz, Phase Noise 1 kHz -160 to -150 dBc/Hz, Phase Noise 10 kHz -161 to -155 dBc/Hz. Tags: DIP. More details for MV197 can be seen below.