The VCTCXO3404F-19.44MHz-A from Dynamic Engineers is a TCVCXO with Frequency 19.44 MHz, Supply Voltage 3.3 V, Current 6 mA, Phase Noise -140dBc/Hz, Phase Noise 1 kHz -140 dBc/Hz. Tags: Surface Mount. More details for VCTCXO3404F-19.44MHz-A can be seen below.