The SM55TZ Series from Pletronics is a Clock Oscillator with Frequency 0.75 to 50 MHz, Supply Voltage 0.8 to 2 V, Output_Voltage 30 to 70%, Current 0.5 to 2.6 mA, Standby Current 100 uA. Tags: Ceramic. More details for SM55TZ Series can be seen below.