MC74ACT564 Motorola, MC74ACT564 Datasheet - Page 2

• Manufacturer Part Number: MC74ACT564
• Description: OCTAL D-TYPE LATCH WITH 3-STATE OUTPUTS
• Manufacturer: Motorola

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DataSheet
FUNCTIONAL DESCRIPTION
triggered flip-flops with individual D-type inputs and 3-state
complementary outputs. The buffered clock and buffered
Output Enable are common to all flip-flops. The eight flip-flops
will store the state of their individual D inputs that meet the
setup and hold times requirements on the LOW-to-HIGH
Clock (CP) transition. With the Output Enable (OE) LOW, the
contents of the eight flip-flops are available at the outputs.
When OE is HIGH, the outputs go to the high impedance state.
Operation of the OE input does not affect the state of the
flip-flops.
4
CP
OE
U
The MC74AC564/74ACT564 consists of eight edge-
.com
O 0
C
Q
D 0
D
O 1
C
Q
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
D 1
D
MC74AC564 MC74ACT564
O 2
Q
C
D 2
D
LOGIC DIAGRAM
FACT DATA
O 3
Q
C
5-2
D 3
D
FUNCTION TABLE
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
NC = No Change
OE
H
H
H
H
L
L
L
L
= LOW-to-HIGH Transition
O 4
Q
Inputs
C
CP
H
H
H
H
D 4
D
D
H
H
H
H
L
L
L
L
O 5
Internal
C
Q
NC
NC
NC
NC
Q
H
H
L
L
D 5
D
Outputs
NC
NC
O
Z
Z
Z
Z
H
L
O 6
C
Q
Hold
Hold
Load
Load
Data Available
Data Available
No Change in Data
No Change in Data
D 6
D
Function
Function
O 7
Q
C
D 7
D