54FCT273D NSC [National Semiconductor], 54FCT273D Datasheet - Page 2

• Manufacturer Part Number: 54FCT273D
• Description: Octal D-Type Flip-Flop
• Manufacturer: NSC [National Semiconductor]

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Truth Table
Mode Select-Function Table
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.
Reset (Clear)
Load “1”
Load “0”
Operating Mode
MR
H
H
L
Inputs
CP
X
N
N
D
X
h
l
n
Output
Q
H
L
L
n
2
H = HIGH Voltage Level steady state
h = HIGH Voltage Level one setup time prior to the LOW-to-HIGH clock tran-
sition
L = LOW Voltage Level steady state
I = LOW Voltage Level one setup time prior to the LOW-to-HIGH clock tran-
sition
X = Immaterial
N = LOW-to-HIGH clock transition
DS100956-3