A semiconductor device having a first inverter electrically connected to a first node. A second inverter is electrically connected to a second node. A third clocked inverter is electrically connected to an output node of the first inverter. A fourth clocked inverter is electrically connected to an output node of the second inverter. A third inverter is electrically connected to an output node of a first clocked inverter and an output node of a second clocked inverter. A fourth inverter is electrically connected to an output node of the third clocked inverter and an output node of the fourth clocked inverter. A comparison circuit is electrically connected to an output node of the third inverter and an output node of the fourth inverter.