參數(shù)資料
型號: CD4020BC
廠商: Fairchild Semiconductor Corporation
元件分類: 通用總線功能
英文描述: 14-Stage Ripple Carry Binary Counter(14級脈沖輸入二進(jìn)制進(jìn)位計數(shù)器)
中文描述: 14級波紋卡里二進(jìn)制計數(shù)器(14級脈沖輸入二進(jìn)制進(jìn)位計數(shù)器)
文件頁數(shù): 5/8頁
文件大?。?/td> 82K
代理商: CD4020BC
5
www.fairchildsemi.com
C
AC Electrical Characteristics
(Note 4)
CD4020BC, CD4040BC T
A
=
25
°
C, C
L
=
50 pF, R
L
=
200k, t
r
=
t
f
=
20 ns, unless otherwise noted
Symbol
Parameter
Note 4:
AC Parameters are guaranteed by DC correlated testing.
Conditions
Min
Typ
Max
Units
t
PHL1
, t
PLH1
Propagation Delay Time to Q
1
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
V
DD
=
5V
V
DD
=
10V
V
DD
=
15V
Any Input
250
550
ns
100
75
150
210
150
330
ns
ns
ns
t
PHL
, t
PLH
Interstage Propagation Delay Time
from Q
n
to Q
n
+
1
60
45
100
125
90
200
ns
ns
ns
t
THL
, t
TLH
Transition Time
50
40
125
100
80
335
ns
ns
ns
t
WL
, t
WH
Minimum Clock Pulse Width
50
40
125
100
ns
ns
ns
t
rCL
, t
fCL
Maximum Clock Rise and Fall Time
No Limit
No Limit
No Limit
ns
ns
MHz
f
CL
Maximum Clock Frequency
1.5
4
4
5
10
12
200
MHz
MHz
ns
t
PHL(R)
Reset Propagation Delay
450
100
80
200
210
170
450
ns
ns
ns
t
WH(R)
Minimum Reset Pulse Width
100
80
5
210
170
7.5
ns
ns
pF
C
IN
C
PD
Average Input Capacitance
Power Dissipation Capacitance
50
pF
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