{HEAD ~ a gate electrode} of said {TAIL ~ fifth P channel MOS transistor} receives a signal formed by inverting said mode trigger signal 
{ HEAD ~ a gate electrode } of said { TAIL ~ fifth P channel MOS transistor } receives a signal formed by inverting said mode trigger signal
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH