The 55CSV-4 Series from Advanced Crystal Technology is a VCXO with Frequency 1 to 50 MHz, Frequency Stability ±25 ppm, ±50 ppm, ±100 ppm, Supply Voltage 1.8 to 5 V, Tuning Voltage 1.8 to 5 V, Current 10 to 45 mA. Tags: Surface Mount. More details for 55CSV-4 Series can be seen below.