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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 121K |
| 代理商： | HD74LV2G74A |
HD74LV2G74A
Rev.3, Jul. 2001, page 7 of 12
Switching Characteristics
V
CC
= 1.8 ± 0.15 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
30
60
—
20
—
MHz C
L
= 15 pF
C
L
= 50 pF
ns
C
L
= 15 pF
frequency
20
40
—
15
—
Propagation
t
PLH
t
PHL
—
16.3
27.0
1.0
29.0
PRE
/
CLR
Q or
Q
delay time
—
17.9
29.0
1.0
32.0
CLK
PRE
/
CLR
Q or
Q
—
21.6
34.0
1.0
36.5
C
L
= 50 pF
—
24.5
39.5
1.0
42.5
CLK
Setup time
t
su
13.0
—
—
14.0
—
ns
D
9.0
—
—
9.0
—
PRE
or
CLR
inactive
Hold time
t
h
t
w
0.5
—
—
0.5
—
ns
Pulse width
12.0
—
—
13.0
—
ns
PRE
or
CLR
“L”
12.0
—
—
13.0
—
CLK “H” or “L”
V
CC
= 2.5 ± 0.2 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
50
100
—
40
—
MHz C
L
= 15 pF
C
L
= 50 pF
ns
C
L
= 15 pF
frequency
30
70
—
25
—
Propagation
t
PLH
t
PHL
—
9.8
14.8
1.0
17.0
PRE
/
CLR
Q or
Q
delay time
—
11.1
16.4
1.0
19.0
CLK
PRE
/
CLR
Q or
Q
—
13.0
17.4
1.0
20.0
C
L
= 50 pF
—
14.2
20.0
1.0
23.0
CLK
Setup time
t
su
8.0
—
—
9.0
—
ns
D
7.0
—
—
7.0
—
PRE
or
CLR
inactive
Hold time
t
h
t
w
0.5
—
—
0.5
—
ns
Pulse width
8.0
—
—
9.0
—
ns
PRE
or
CLR
“L”
8.0
—
—
9.0
—
CLK “H” or “L”
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