The LFSPXO019987 is a 7 x 5mm 50ppm Crystal Oscillator with ceramic with a seam sealed metal lid, hermetically sealed. The CFPS-73 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.
