The XE61S - A00 from Xsis Electronics is a Space Qualified Oscillator with Frequency 125 Hz to 90 MHz, Frequency Stability ±10 to ±100 PPM, Input Current 6 to 50 mA, Rise/Fall Time 3 to 5 nS, Start-up Time 10 mS. Tags: Dual-in line Package. More details for XE61S - A00 can be seen below.