The latter pulls up the SC line strongly to the Vcc or battery power supply line voltage, thereby turning off the P channel {TAIL ~ FET} which is {HEAD ~ the transistor} 313 
The latter pulls up the SC line strongly to the Vcc or battery power supply line voltage , thereby turning off the P channel { TAIL ~ FET } which is { HEAD ~ the transistor } 313
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH