CMOS CLOCK OSCILLATOR C3292-FREQ. In the event we do not have stock. The following series can be substituted for C3292-freq. Frequencies must be the same: C3291- CE3292- CE3291- C3392-FREQ. In the event we do not have stock. The following series can be substituted for C3392-freq. Frequencies must be the same: C3391- CE3392- CE3391- 5-0704-57