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參數(shù)資料
| 型號： | HD74HC194 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-bit Bidirectional Universal Shift Register |
| 中文描述： | 4位雙向通用移位寄存器 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 49K |
| 代理商： | HD74HC194 |
HD74HC194
6
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Item
Symbol
V
CC
(V)
2.0
Min Typ Max Min
Max
Unit
Test Conditions
Maximum clock
f
max
—
—
6
—
5
ns
frequency
4.5
—
—
30
—
24
6.0
—
—
35
—
28
Propagation delay t
PHL
time
2.0
—
—
140 —
175
ns
Clock to Q
4.5
—
12
28
—
35
6.0
—
—
24
—
30
t
PLH
2.0
—
—
140 —
175
ns
4.5
—
12
28
—
35
6.0
—
—
24
—
30
t
PHL
2.0
—
—
150 —
190
ns
Clear to Q
4.5
—
13
30
—
38
6.0
—
—
26
—
33
Pulse width
t
w
2.0
80
—
—
100
—
ns
Clock or Clear
4.5
16
6
—
20
—
6.0
14
—
—
17
—
Setup time
t
su
2.0
100 —
—
125
—
ns
A, B, C or D to Clock
4.5
20
7
—
25
—
6.0
17
—
—
21
—
2.0
150 —
—
187
—
ns
Mode controls to Clock
4.5
30
17
—
37
—
6.0
25
—
—
31
—
Hold time
t
h
2.0
0
—
—
0
—
ns
Any input
4.5
0
–4
—
0
—
6.0
0
—
—
0
—
Removal time
t
rem
2.0
25
—
—
31
—
ns
Clear inactive to Clock
4.5
5
1
—
6
—
6.0
4
—
—
5
—
Output rise/fall
t
TLH
t
THL
2.0
—
—
75
—
95
ns
time
4.5
—
5
15
—
19
6.0
—
—
13
—
16
Input capacitance
Cin
—
—
5
10
—
10
pF
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