The UTC4013 is a dual D-type flip-flop which has two
independent circuits and each flip-flop features independent
data, set, reset, and clock inputs and outputs. The input level
applied to DATA input are transferred to Q and Q output by
rising edge of the clock pulse. When SET input is “H”, and
RESET input is “L”, outputs become Q=”H” and Q =”L”. When
SET input is “L” and RESET input is “H”, outputs become
Q=”L” and Q =”H”. When both SET input and RESET input
are at “H”, outputs become Q=”H” and Q =”H”