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HD74LVC74 Datasheet(PDF) 2 Page - Hitachi Semiconductor

Part # HD74LVC74
Description  Dual D-type Flip Flops with Preset and Clear
PDF  9 Pages
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HD74LVC74 Datasheet(HTML) 2 Page - Hitachi Semiconductor

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HD74LVC74
2
Function Table
Inputs
Outputs
PR
CLR
CK
D
Q
Q
L
H
XXH
L
H
L
XXL
H
L
L
XXH
*1
H
*1
HH
↑
HH
L
HH
↑
LL
H
HH
L
X
Q
0
Q
0
HH
HX
Q
0
Q
0
HH
↓
XQ
0
Q
0
H :
High level
L :
Low level
X :
Immaterial
↓ :
High to Low transition
↑ :
Low to high transition
Q
0:
Level to Q before the indicated steady input conditions were established.
Note:
1. Q and
Q will remain high as long as preset and clear are low, but Q and Q are unpredictable, if
preset and clear go high simultaneously.
Pin Arrangement
(Top view)
11
12
13
14 VCC
2CLR
2D
2CK
2PR
2Q
1
2
3
4
5
6
7
8
9
10
1CLR
GND
1D
1CK
1PR
1Q
1Q
2Q
D
CK
PR CLR
Q
Q
D
CK
CLR
PR
Q
Q



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