Datasheet

TG
C
C
TG
C
C
TG
C
C
C
TG
C
C
PRE
CLK
D
CLR
Q
Q
C
SN54LVC74A, SN74LVC74A
SCAS287T –JANUARY 1993–REVISED JULY 2013 www.ti.com
FUNCTION TABLE
INPUTS OUTPUTS
PRE CLR CLK D Q Q
L H X X H L
H L X X L H
L L X X H
(1)
H
(1)
H H ↑ H H L
H H ↑ L L H
H H L X Q
0
Q
0
(1) This configuration is nonstable; that is, it does not persist when PRE
or CLR returns to its inactive (high) level.
LOGIC DIAGRAM, EACH FLIP-FLOP
(POSITIVE LOGIC)
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