74LCX574MTC-NL FAIRCHILD [Fairchild Semiconductor], 74LCX574MTC-NL Datasheet - Page 2

• Manufacturer Part Number: 74LCX574MTC-NL
• Description: Low Voltage Octal D-Type Flip-Flop with 5V Tolerant Inputs and Outputs
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

74LCX574 Rev. 2.0.0
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propaga-
tion delays.
Logic Symbol
Connection Diagrams
CP
OE
GND
Pad Assignments for DQFN
SOIC, SOP, SSOP, TSSOP
OE
D
D
D
D
D
D
D
D
OE
CP
D
D
D
D
D
D
D
D
0
1
2
3
4
5
6
7
Pin Assignments for
O
D
0
1
2
3
4
5
6
7
0
0
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
D
O
1
1
(Top View)
GND
OE
D
O
10
1
2
2
O
C
Q
O
D
0
3
3
V
CP
11
20
D
O
CC
D
D
4
4
0
O
D
20
19
18
17
16
15
14
13
12
11
19
18
17
16
15
14
13
12
5
5
D
O
O
O
O
O
O
O
O
O
O
6
6
C
Q
V
O
O
O
O
O
O
O
O
CP
0
1
2
3
4
5
6
7
1
D
O
CC
0
1
2
3
4
5
6
7
7
7
D
D
1
O
C
Q
2
D
D
2
O
C
Q
3
2
D
Pin Descriptions
Truth Table
H
L
X
Z
NC
Functional Description
The LCX574 consists of eight edge-triggered flip-flops
with individual D-type inputs and 3-STATE true outputs.
The buffered clock and buffered Output Enable are com-
mon to all flip-flops. The eight flip-flops will store the state
of their individual D inputs that meet the setup and hold
time requirements on the LOW-to-HIGH Clock (CP) tran-
sition. 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 loading of
the flip-flops.
D
D
CP
OE
O
OE CP D
3
H
H
H
H
L
L
L
L
0
0
Pin Names
LOW Voltage Level
–D
High Impedance
–O
Immaterial
HIGH Voltage Level
Inputs
No Change
O
LOW-to-HIGH Transition
Q
7
C
7
4
H
H
H
H
D
D
4
H
H
H
H
L
L
L
L
O
Internal Outputs
C
Q
5
NC
NC
NC
NC
Data Inputs
Clock Pulse Input
3-STATE Output Enable Input
3-STATE Outputs
Q
H
H
L
L
D
D
5
O
C
Q
6
NC
NC
O
D
D
Z
Z
Z
Z
H
L
Description
6
n
O
Q
C
Hold
Hold
Load
Load
Data Available
Data Available
No Change in Data
No Change in Data
7
D
D
Function
7
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