tc74vcx16652ft TOSHIBA Semiconductor CORPORATION, tc74vcx16652ft Datasheet - Page 3

• Manufacturer Part Number: tc74vcx16652ft
• Description: Discrete Devices Low Voltage Cmos Logic Ics
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Truth Table
X: Don’t care
Z: High impedance
Q
*: The clocks are not internally gated with either OEAB or OEBA .
OEAB
n
: The data stored into the internal flip-flops by most recent low to high transition of the clock inputs.
H
H
L
L
Therfore, data on the A and/or B busses may be clocked into the storage flip-flops at any time.
OEBA
H
H
L
L
CAB
Control Inputs
X *
X *
X *
X *
X *
X *
X *
X *
CBA
X *
X *
X *
X *
X *
X *
X *
X *
SAB
X
X
H
H
X
X
X
X
H
L
L
SBA
X
X
X
X
X
X
H
H
H
L
L
3
Output
Output
Input
Input
Qn
Qn
A
X
H
H
X
H
H
H
H
Z
L
L
L
L
L
L
Bus
Output
Output
Input
Input
Qn
Qn
B
X
H
H
H
H
H
X
H
Z
L
L
L
L
L
L
The output functions of A and B Busses are
disabled.
Both A and B Busses are used as inputs to
the internal flip-flops. Data on the Bus will be
stored on the rising edge of the Clock.
The data on the A bus are displayed on the
B bus.
The data on the A bus are displayed on the
B Bus, and are stored into the A storage
flip-flops on the rising edge of CAB.
The data in the A storage flop-flops are
displayed on the B Bus.
The data on the A Bus are stored into the A
storage flip-flops on the rising edge of CAB,
and the stored data propagate directly onto
the B Bus.
The data on the B Bus are displayed on the
A bus.
The data on the B Bus are displayed on the
A Bus, and are stored into the B storage
flip-flops on the rising edge of CBA.
The data in the B storage flip-flops are
displayed on the A Bus.
The data on the B Bus are stored into the B
storage flip-flops on the rising edge of CBA,
and the stored data propagate directly onto
the A Bus.
The data in the A storage flop-flops are
displayed on the B Bus, and the data in the
B storage flop-flops are displayed on the A.
TC74VCX16652FT
Function
2006-02-01