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參數(shù)資料
| 型號(hào)： | HD74LV2G74A |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Single D?type Flip Flops with Preset and Clear |
| 中文描述： | 單一的D？式人字拖與預(yù)置和清除 |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大小： | 121K |
| 代理商： | HD74LV2G74A |
HD74LV2G74A
Rev.3, Jul. 2001, page 8 of 12
Switching Characteristics
(cont)
V
CC
= 3.3 ± 0.3 V
Item
Symbol
T
a
= 25°C
Min
T
a
= –40 to 85°C
Min
Unit Test
FROM
TO
Typ
Max
Max
Conditions (Input)
(Output)
Maximum clock
f
max
80
140
—
70
—
MHz C
L
= 15 pF
C
L
= 50 pF
ns
C
L
= 15 pF
frequency
50
90
—
45
—
Propagation
t
PLH
t
PHL
—
6.9
12.3
1.0
14.5
PRE
/
CLR
Q or
Q
delay time
—
7.9
11.9
1.0
14.0
CLK
PRE
/
CLR
Q or
Q
—
9.2
15.8
1.0
18.0
C
L
= 50 pF
—
10.2
15.4
1.0
17.5
CLK
Setup time
t
su
6.0
—
—
7.0
—
ns
D
5.0
—
—
5.0
—
PRE
or
CLR
inactive
Hold time
t
h
t
w
0.5
—
—
0.5
—
ns
Pulse width
6.0
—
—
7.0
—
ns
PRE
or
CLR
“L”
6.0
—
—
7.0
—
CLK “H” or “L”
V
CC
= 5.0 ± 0.5 V
Item
Symbol
T
a
= 25°C
Min
T
a
= –40 to 85°C
Min
Unit Test
FROM
TO
Typ
Max
Max
Conditions (Input)
(Output)
Maximum clock
f
max
130
180
—
110
—
MHz C
L
= 15 pF
C
L
= 50 pF
ns
C
L
= 15 pF
frequency
90
140
—
75
—
Propagation
t
PLH
t
PHL
—
5.0
7.7
1.0
9.0
PRE
/
CLR
Q or
Q
delay time
—
5.6
7.3
1.0
8.5
CLK
PRE
/
CLR
Q or
Q
—
6.6
9.7
1.0
11.0
C
L
= 50 pF
—
7.2
9.3
1.0
10.5
CLK
Setup time
t
su
5.0
—
—
5.0
—
ns
D
3.0
—
—
3.0
—
PRE
or
CLR
inactive
Hold time
t
h
t
w
0.5
—
—
0.5
—
ns
Pulse width
5.0
—
—
5.0
—
ns
PRE
or
CLR
“L”
5.0
—
—
5.0
—
CLK “H” or “L”
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