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MC74LCX74 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. MC74LCX74
Description  Low-Voltage CMOS Dual D-Type Flip-Flop With 5 V−Tolerant Inputs
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74LCX74 Datasheet(HTML) 2 Page - ON Semiconductor

   
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MC74LCX74
http://onsemi.com
2
Figure 1. Pinout: 14−Lead (Top View)
13
14
12
11
10
9
8
2
1
34567
VCC CD2
D2
CP2 SD2O2
O2
CD1
D1
CP1
SD1O1
O1
GND
Figure 2. Logic Diagram
O1
SD1
Q
4
5
D1
D
2
CP1
CP
3
CD1
1
O1
Q
6
SD
CD
O2
SD2
Q
10
9
D2
D
12
CP2
CP
11
CD2
13
O2
Q
8
SD
CD
PIN NAMES
Pins
Function
CP1, CP2
Clock Pulse Inputs
D1−D2
Data Inputs
CD1, CD2
Direct Clear Inputs
SD1, SD2
Direct Set Inputs
On−On
Outputs
TRUTH TABLE
Inputs
Outputs
SDn
CDn
CPn
Dn
On
On
Operating Mode
L
H
X
X
H
L
Asynchronous Set
H
L
X
X
L
H
Asynchronous Clear
L
L
X
X
H
H
Undetermined
H
H
h
H
L
L
d
dR
dR
i t
H
H
l
L
H
Load and Read Register
H
H
X
NC
NC
Hold
H
= High Voltage Level
h
= High Voltage Level One Setup Time Prior to the Low−to−High Clock Transition
L
= Low Voltage Level
l
= Low Voltage Level One Setup Time Prior to the Low−to−High Clock Transition
NC = No Change
X
= High or Low Voltage Level and Transitions are Acceptable
= Low−to−High Transition
= Not a Low−to−High Transition
For ICC reasons, DO NOT FLOAT Inputs


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