5X7 61.44M OSC 5X7 64M OSC 5X7 66.000MHZ 5X7 66.666M OSC 5X7 66.66M OSC 5X7 66M 3.3V 20PPM 5X7 66M OSC 5X7 68.68M OSC 5X7 6M OSC 5X7 7.5M 3.3V 20PPM