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參數(shù)資料
| 型號： | HD74LV221A |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Dual Monostable Multivibrators(雙單穩(wěn)態(tài)多諧振蕩器) |
| 中文描述： | 雙單穩(wěn)態(tài)多頻振蕩器（雙單穩(wěn)態(tài)多諧振蕩器） |
| 文件頁數(shù)： | 6/19頁 |
| 文件大?。?/td> | 88K |
| 代理商： | HD74LV221A |
HD74LV221A
6
Switching Characteristics
V
CC
= 2.5
±
0.2 V
Ta = 25
°
C
Ta = –40 to 85
°
C
Item
Symbol
Min
Typ
Max
Min
Max
Unit
Test Conditions
FROM
(Input)
TO
(Output)
Propa-
gation
delay time
t
PLH
t
PHL
—
13.3
31.4
1.0
37.0
ns
C
L
= 15 pF
A or B
Q or
Q
—
15.5
36.0
1.0
42.0
C
L
= 50 pF
—
10.9
25.0
1.0
29.5
C
L
= 15 pF
CLR
Q or
Q
—
12.5
32.8
1.0
34.5
C
L
= 50 pF
—
13.5
33.4
1.0
39.0
C
L
= 15 pF
CLR
Q or
Q
—
15.9
38.0
1.0
44.0
C
L
= 50 pF
(Trigger)
Pulse
width
t
w
6.0
—
—
6.5
—
ns
A
, B or
CLR
Output
pulse
width
t
wQ
—
170
260
—
320
ns
C
L
= 50 pF,
Cext = 28 pF, Rext = 2 k
90
100
110
90
110
μ
s
C
L
= 50 pF,
Cext = 0.01
μ
F, Rext = 10 k
0.9
1.0
1.1
0.9
1.1
ms
C
L
= 50 pF,
Cext = 0.1
μ
F, Rext = 10 k
t
wQ
—
±
1
—
—
—
%
C
L
= 50 pF
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