參數(shù)資料
型號: HD74HC4040
廠商: Hitachi,Ltd.
元件分類: 通用總線功能
英文描述: 12-stage Binary Counter
中文描述: 12位的二進制計數(shù)器
文件頁數(shù): 5/9頁
文件大小: 54K
代理商: HD74HC4040
HD74HC4040
5
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
5
4
MHz
frequency
4.5
25
20
6.0
29
24
Propagation delay t
PLH
time
2.0
175 —
220
ns
Clock to Q
1
4.5
15
35
44
6.0
30
37
t
PHL
2.0
175 —
220
ns
Clock to Q
1
4.5
16
35
44
6.0
30
37
t
PHL
2.0
200 —
250
ns
Reset to output
4.5
18
40
50
6.0
34
43
t
PLH
t
PHL
2.0
100 —
125
ns
Q
n
to Q
n – 1
4.5
4
20
25
6.0
17
21
Removal time
t
rem
2.0
100 —
125
ns
4.5
20
25
6.0
17
21
Pulse width
t
w
2.0
80
100
ns
4.5
16
5
20
6.0
14
17
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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