IN74HC652A
FUNCTION TABLE
Dir.
L
OE CAB CBA SAB SBA
A
INPUTS
Z
B
FUNCTION
INPUTS Both the A bus and the B bus are inputs.
H
X
X
X
X
X
X
Z
The output functions of the A and B bus
are disabled.
INPUTS
INPUTS Both the A and B bus are used for inputs
to the internal flip-flops. Data at the bus
will be stored on low to high transition of
the clock inputs.
OUTPUTS
INPUTS The A bus are outputs and the B bus are
inputs.
X*
X*
X
X
X
X
L
L
L
H
L
H
The data at the B bus are displayed at the
A bus.
L
L
L
H
L
H
The data at the B bus are displayed at the
A bus. The data of the B bus are stored to
the internal flip-flops on low to high
transition of the clock pulse.
X*
X*
X
X
H
H
Qn
X
The data stored to the internal flip-flops,
are displayed at the A bus.
H
L
H
L
The data at the B bus are stored to the
internal flip-flops on low to high
transition of the clock pulse. The states of
the internal flip-flops output directly to
the A bus.
INPUTS
OUTPUTS The A bus are inputs and the B bus are
outputs.
X
X
X*
X*
L
L
X
X
L
H
L
H
The data at the A bus are displayed at the
B bus.
H
H
L
H
L
H
The data at the B bus are displayed at the
A bus. The data of the B bus are stored to
the internal flip-flops on low to high
transition of the clock pulse.
X*
X*
H
H
X
X
X
Qn
The data stored to the internal flip-flops
are displayed at the B bus.
L
H
L
H
The data at the A bus are stored to the
internal flip-flops on low to high
transition of the clock pulse. The states of
the internal flip-flops output directly to
the B bus.
OUTPUTS OUTPUTS Both the A bus and the B bus are outputs
H
L
X
X
H
H
H
H
Qn
Qn
The data stored to the internal flip-flops
are displayed at the A and B bus
respectively.
Qn
Qn
The output at the A bus are displayed at
the B bus, the output at the B bus are
displayed at the A bus respec.
X : DON’T CARE
Z : HIGH IMPEDANCE
Qn : THE DATA STORED TO THE INTERNAL FLIP-FLOPS BY MOST RECENT LOW TO HIGH TRANSITION
OF THE CLOCK INPUTS
* : THE DATA AT THE A AND B BUS WILL BE STORED TO THE INTERNAL FLIP-FLOPS ON EVERY LOW
TO TRANSITION OF THE CLOCK INPUTS
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
