DF221 array equivalent, cmos gate array.
DF221 is a static, master-slave, multiplexed scan D flip-flop. SET is asynchronous and active low. Output is unbuffered and changes state on the rising edge of the clock.
Logic Symbol DF221
DS C SD SE
Q
Truth Table C ↑ ↑ ↑ ↑ X L
D SD SE SN HX L .
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