74LVTH574 FAIRCHILD [Fairchild Semiconductor], 74LVTH574 Datasheet - Page 2

• Manufacturer Part Number: 74LVTH574
• Description: Low Voltage Octal D-Type Flip-Flop with 3-STATE Outputs
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

www.fairchildsemi.com
Logic Symbols
Connection Diagram
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
IEEE/IEC
2
Pin Descriptions
Truth Table
H
L
X

Z
O
Functional Description
The LVT574 and LVTH574 consist of eight edge-triggered
flip-flops with individual D-type inputs and 3-STATE true
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-type inputs that meet the
setup and hold time 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 out-
puts. When the 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.
D
CP
OE
O
o
0
0
LOW Voltage Level
High Impedance
–D
HIGH Voltage Level
Immaterial
–O
Pin Names
Previous O
LOW-to-HIGH Transition
D
7
7
H
L
X
X
n
o
before HIGH to LOW of CP
Inputs
CP


Data Inputs
Clock Pulse Input
3-STATE Output Enable Input
3-STATE Outputs
X
L
OE
H
Description
L
L
L
Outputs
O
O
H
Z
L
n
o