The LFSPXO009686 is a 2.5 x 2mm 50ppm low power Crystal Clock Oscillator with ceramic and a seam sealed metal lid, hermetically sealed. The CFPS-109 series oscillator with logic-1 to pad-1 enables oscillator output, logic-0 to pad-1 disables oscillator output, when disabled the oscillator output goes to the high impedance state. No connection to pad-1 enables oscillator output. For use with the real time clock applications.