Operating instructions

TABLE 3-1 (cont)
Theory of Operation-71380
Description
A
bistable device with
three or
more inputs and twu
outputs
(either or both
outputs may be
used) . When gated,
the outputs
change state in
response to the
states at the inputs prior
to the trig-
ger . The outputs are
complemen-
tary (i .e ., when
one output is HI
the other is
LO) . The dynamic indi-
cator on
the gate (G) input may be
of either
polarity depending on the
device .
A bistable device with two inputs
and two outputs (either or both
outputs may be
used) . When clock-
ed, the state of the Q output
changes to the state at the data (D)
input . The outputs are complemen-
tary (e .g ., when one output is HI
the other is LO) . The dynamic indi-
cator on the clock input may be of
either polarity, depending
upon
the
device .
For devices with set
(S)
or
reset (R)
inputs, the indicated state
at either
of these inputs
overrides all other
inputs to the states
shown in the
Input/Output Table .
Device

Symbol
Triggered
Set-Clear
(J- K)
Flip-Flop
D (data) Type
Flip-Flop
with Direct
Inputs
(Direct
Inputs
may be
applied to
all
triggered
flip-flops)
Input/Output Table
Input / Output
Output conditions shown
after gate pulse .
Set (S) and reset
(R)
in-
puts override data (D)
and clock (C) inputs .
Input / Output
LO

LO I
Undefined
S
R
I
Q

Q
HI

LO I
LO

HI
H I

H I

I
No Effect
LO
HI
I
HI LO
Set (S) and Reset (R)
inputs both high .
Input
Output
J K Q Q
LO LO No change
LO HI LO HI
HI LO HI LO
HI HI
Changes
state
Condition
Condition
before
after
clock clock
pulse
pulse
D Q Q
HI HI LO
LO LO HI