The abbreviation for "Oven Control Crystal Oscillator". Such an oscillator contains a thermistor sensing network that adjusts the output frequency, thereby allowing the frequency to remain constant over a specified temperature range.
OEM
The abbreviation for "Original Equipment Manufacture".
OSCILLATORS
A circuit or device that produces an alternating current of a specific frequency at its output terminals.
OUTPUT CURRENT
Is represented by IOL and IOH, which is the output current at VOL and VOH.
OUTPUT LOAD (FAN OUT)
The capacity of the oscillator to drive other devices. TTL devices are specified in the number of gates that can be driven; i.e., 10 TTL gates. CMOS outputs are specified in picoFarads (pF); i.e., 15pF or 50pF loads.
OUTPUT VOLTAGE
Is represented by VOL, which is the maximum voltage that output low will be and VOH, which is the minimum voltage that output high, will be.
OVERLAP TIME
The time, measured at 50% Vp-p, at which the two outputs of a complementary output ECL oscillator overlap.
