Table 6.3Summary of Latch and Flip-Flop Characteristics

Device

Characteristic Equation

SR latch

Q* = S + RQ

Gated SR latch

Q* = SC +QR + CQ

D latch

Q* = DC + CQ

SR flip-flop

Q* = S + RQ

D flip-flop

Q* = D

JK flip-flop

Q* = KQ + JQ

T flip-flop (edge-triggered)

Q* = Q

T flip-flop (clocked)

Q* = TQ + TQ

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