74F109SCX View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
74F109SCX Datasheet PDF : 7 Pages
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Truth Table
Inputs
Outputs
SD
CD
CP
J
K
Q
Q
L
H
X
X
X
H
L
H
L
X
X
X
L
H
L
H
H
H
H
L
H
H
H
H
X
X
I
h
I
h
X
I
I
h
h
H
H
L
H
Toggle
Q
Q
H
L
H
H
L
X
X
Q
Q
H (h) = HIGH Voltage Level
L (l) = LOW Voltage Level
= LOW-to-HIGH Transition
X = Immaterial
Q0 (Q0) = Before LOW-to-HIGH Transition of Clock
Lower case letters indicate the state of the referenced output one setup time prior to the LOW-to-HIGH clock transition.
Unit Loading/Fan Out
Pin Names
Description
U.L.
Input IIH/IIL
HIGH/LOW Output IOH/IOL
J1, J2, K1, K2 Data Inputs
CP1, CP2
Clock Pulse Inputs (Active Rising Edge)
CD1, CD2
Direct Clear Inputs (Active LOW)
SD1, SD2
Direct Set Inputs (Active LOW)
Q1, Q2, Q1, Q2 Outputs
1.0/1.0
1.0/1.0
1.0/3.0
1.0/3.0
50/33.3
20 µA/−0.6 mA
20 µA/−0.6 mA
20 µA/−1.8 mA
20 µA/−1.8 mA
−1 mA/20 mA
Block Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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