PRONTO CMOS Clock Oscillators Pletronics Inc. PRONTO CMOS Clock Oscillators offer low jitter and a nominal supply voltage of 1.8V, 2.5V, or 3.3V with an enable/disable function for low standby power. These fundamental crystals feature a frequency range of 1MHz to 200MHz (1MHz to 125MHz at 1.8V) in a compact LCC ceramic package. Pletronics PRONTO oscillators have a standard operating temperature range of -10°C to +70°C and a CMOS output that can interface with TTL devices. Typical applications include driving FPGAs, digital videos, Ethernet, GbE, medical, test and measurement, and more.