The MC44144 is a gated phase locked loop intended for video applications that is described in its datasheet as "sensitive to shunt capacitance" and that "crystal switching should be avoided".
What issues might I expect to encounter if I were to attempt crystal switching such as in the schematic below? I understand this would introduce around 5pf to ground in series with the selected crystal, and 5pf in parallel. Would I get non-oscillation, unstable oscillation, drift, ?
Are there any measures I might take to mitigate these effects?
simulate this circuit – Schematic created using CircuitLab
SELECTto a couple volts above the VCC used by the microcontroller. \$\endgroup\$