Datasheet

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PRE
CLK
K
Q
Q
CLR
J
SN74LVC112A
DUAL NEGATIVE-EDGE-TRIGGERED J-K FLIP-FLOP
WITH CLEAR AND PRESET
SCAS289L – JANUARY 1993 – REVISED AUGUST 2005
FUNCTION TABLE
INPUTS OUTPUTS
PRE CLR CLK J K Q Q
L H X X X H L
H L X X X L H
L L X X X H
(1)
H
(1)
H H ↓ L L Q
0
Q
0
H H ↓ H L H L
H H ↓ L H L H
H H ↓ H H Toggle
H H H X X Q
0
Q
0
(1) The output levels in this configuration may not meet the minimum
levels for V
OH
. Furthermore, this configuration is nonstable; that is,
it does not persist when either PRE or CLR returns to its inactive
(high) level.
LOGIC DIAGRAM, EACH FLIP-FLOP (POSITIVE LOGIC)
2