TCXO: Temperature Compensated Crystal Oscillators offer excellent frequency stability with low power consumption. Most TCXO's offer a voltage control option which allows the frequency to be adjusted by an external control voltage. TCXO's are ideal for today's wireless applications.
VCXO: Voltage Controlled Crystal Oscillators are available in both thru hole and SMD packages. The VCXO's are available in various frequency control ranges from ± 50 ppm to ± 200 ppm depending on package type and frequency.