Microchip's VC-801 Crystal Oscillator (XO) is a quartz stabilized square wave generator with a CMOS output. The VC-801 uses fundamental or 3rd overtone crystals resulting in very low jitter performance, and a monolithic IC which improves reliability and reduces cost. ***New orders on hold until further notice due to supply constraints. Recommend VC-801A series as an alternate. Please contact your local sales office for details.***