DF031 is a static, master-slave D flip-flop. SET and RESET are asynchronous and active low. Output is unbuffered and changes state on the rising edge of the clock. Logic Symbol DF031 DSQ C R Truth Table SN L L H H H H RN D C LXX HXX LXX HL ↑ HH ↑ HX L NC = No Change IL = Illegal Q IL H L L H NC .