There is provided fiber drop terminal assemblies for providing selective connections between optical fibers of distribution cables and optical fibers of drop cables, such as in multiple dwelling units. The CMOS circuit can thus operate stably with lower power consumption, because latching-up is reduced when the supply voltage is applied to the CMOS circuit or when the supply voltage is cut off, and subthreshold current is decreased during normal operation. The pre-signal generator also generates a pre-latch pulse signal by detecting when the pre-input control signal and the pre-output control signal are generated.