The TX20SE Series from Advanced Crystal Technology is a TCXO with Frequency 13 to 55 MHz, Supply Voltage 1.8 to 3.3 V, Output_Voltage 0.8V p-p (min.), Current 1.2 to 2.2 mA, Load Capacitance 10 pf. Tags: Surface Mount. More details for TX20SE Series can be seen below.