Practical Electronics/IC/4013

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4013
Logic Type Sequential
Function Family Flip-flop
Description Dual D-type flip-flop with asynchronous set-reset
Pins 14
Pinout
4013 Pinout.svg
Functional Diagram
4013 Functional Diagram.svg

The 4013 contains two independent D-type flip-flops with asynchronous set/reset inputs. Whenever the set or reset pins go high, the appropriate output is expressed immediately on the outputs. When set and reset are low, the output shows the data at the input at the time of the last low-to-high clock transistion. This is then held until the next transistion.

For more information on D-type flip-flops, refer to this module.

Function Tables for a single flip-flop[edit]

Inputs Outputs
S R D C Q Q
H L X X H L
L H X X L H
H H X X H H
Inputs Outputs
S R D C Qn+1 Qn+1
L L L Transistion Low-High.svg L H
L L H Transistion Low-High.svg H L

Further Reading[edit]