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參數(shù)資料
| 型號： | PC74HCT6323AT |
| 英文描述： | Prescaler/Frequency Divider |
| 中文描述： | 分頻器/分頻器 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大小： | 258K |
| 代理商： | PC74HCT6323AT |
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Symbol
Parameter
Test Conditions
Value
-40 to 85
o
C
74HC
Min.
Unit
V
CC
(V)
C
L
(pF)
T
A
= 25
o
C
54HC and 74HC
Min.
Typ.
25
-55 to 125
o
C
54HC
Min.
Max.
60
12
10
100
20
17
130
26
22
85
17
14
130
26
22
150
30
26
180
36
31
125
25
21
10
Max.
75
15
13
125
25
21
165
33
28
105
21
18
165
33
28
190
38
32
225
45
38
155
31
26
10
Max.
90
18
15
150
30
26
195
39
33
130
26
22
195
39
33
225
45
38
270
54
46
190
38
32
10
t
TLH
t
THL
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
0
2.0
4.5
6.0
50
ns
7
6
t
PLH
t
PHL
Propagation
Delay Time
(for HC620)
50
41
12
10
55
16
14
38
12
10
51
16
14
57
19
16
69
23
20
18
15
5
32
34
ns
150
ns
t
PLH
t
PHL
Propagation
Delay Time
(for HC623)
50
ns
150
ns
t
PZL
t
PZH
Output Enable
Time
50
R
L
= 1 K
ns
150
R
L
= 1 K
ns
t
PLZ
t
PHZ
Output Disable
Time
50
R
L
= 1 K
ns
C
IN
Input Capacitance
Power Dissipation
Capacitance
pF
C
PD
(*)
for HC620
for HC623
pF
C
PD
isdefined as thevalueof theIC’sinternal equivalent capacitance which iscalculated from the operating current consumption without load.(Refer
to Test Circuit).Average operting current can be obtained by thefollowingequation. I
CC
(opr) = C
PD
V
CC
f
IN
+ I
CC
M54/M74HC620/623
5/11
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