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MC14520BDWR2
P1-P3
P4-P6
P7-P7
MC14518B, MC14520B
http://onsemi.com
4
SWITCHING CHARACTERISTICS
(Note 6) (C
L
= 50 pF, T
A
= 25
_
C)
Characteristic
Symbol
V
DD
All T
ypes
Unit
Min
Ty
p
(Note 7)
Max
Output Rise and Fall T
ime
t
TLH
, t
THL
= (1.5 ns/pF) C
L
+ 25 ns
t
TLH
, t
THL
= (0.75 ns/pF) C
L
+ 12.5 ns
t
TLH
, t
THL
= (0.55 ns/pF) C
L
+ 9.5 ns
t
TLH
,
t
THL
5.0
10
15
−
−
−
100
50
40
200
100
80
ns
Propagation Delay T
ime
Clock to Q/Enable to Q
t
PLH
, t
PHL
= (1.7 ns/pF) C
L
+ 215 ns
t
PLH
, t
PHL
= (0.66 ns/pF) C
L
+ 97 ns
t
PLH
, t
PHL
= (0.5 ns/pF) C
L
+ 75 ns
Reset to Q
t
PHL
= (1.7 ns/pF) C
L
+ 265 ns
t
PHL
= (0.66 ns/pF) C
L
+ 1
17 ns
t
PHL
= (0.66 ns/pF) C
L
+ 95 ns
t
PLH
,
t
PHL
5.0
10
15
−
−
−
280
11
5
80
560
230
160
ns
t
PHL
5.0
10
15
−
−
−
330
130
90
650
230
170
ns
Clock Pulse Width
t
w(H)
t
w(L)
5.0
10
15
200
100
70
100
50
35
−
−
−
ns
Clock Pulse Frequency
f
cl
5.0
10
15
−
−
−
2.5
6.0
8.0
1.5
3.0
4.0
MHz
Clock or Enable Rise and Fall T
ime
t
THL
, t
TLH
5.0
10
15
−
−
−
−
−
−
15
5
4
μ
s
Enable Pulse Width
t
WH(E)
5.0
10
15
440
200
140
220
100
70
−
−
−
ns
Reset Pulse Width
t
WH(R)
5.0
10
15
280
120
90
125
55
40
−
−
−
ns
Reset Removal T
ime
t
rem
5.0
10
15
– 5
15
20
– 45
– 15
– 5
−
−
−
ns
6.
The formulas given are for the typical characteristics only at 25
_
C.
7.
Data labelled “T
yp” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
Figure 1. Power Dissipation T
est Circuit and Waveform
PULSE
GENERA
TOR
V
ARIABLE
WIDTH
C
L
C
L
C
L
C
L
V
DD
V
SS
V
SS
500
μ
F
0.01
μ
F
CERAMIC
20 ns
50%
10%
90%
20 ns
I
D
Q3
Q2
Q1
Q0
C
E
R
MC14518B, MC14520B
http://onsemi.com
5
Figure 2. Switching Time T
est Circuit and W
aveforms
PULSE
GENERA
TOR
C
L
C
L
C
L
C
L
V
DD
V
SS
Q3
Q2
Q1
Q0
C
E
R
20 ns
Q
t
r
t
f
V
DD
V
SS
20 ns
CLOCK
INPUT
90%
50%
10%
t
WL
t
WH
90%
50%
10%
t
PLH
t
PHL
Figure 3. Timing Diagram
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
2
1
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
14
3
0
9
8
7
6
5
4
3
2
1
CLOCK
ENABLE
RESET
Q0
Q1
Q2
Q3
Q0
Q1
Q2
Q3
MC14518B
MC14520B
MC14518B, MC14520B
http://onsemi.com
6
Figure 4. Decade Counter (MC14518B) Logic Diagram
(1/2 of Device Shown)
D
C
R
Q
Q
D
C
R
Q
Q
D
C
R
Q
Q
D
C
R
Q
Q
Q0
Q1
Q2
Q3
RESET
ENABLE
CLOCK
Figure 5. Binary Counter (MC14520B) Logic Diagram
(1/2 of Device Shown)
D
C
R
Q
Q
D
C
R
Q
Q
D
C
R
Q
Q
D
C
R
Q
Q
Q0
Q1
Q2
Q3
RESET
ENABLE
CLOCK
P1-P3
P4-P6
P7-P7
MC14520BDWR2
Mfr. #:
Buy MC14520BDWR2
Manufacturer:
ON Semiconductor
Description:
Counter Shift Registers 3-18V Dual BCD Up
Lifecycle:
New from this manufacturer.
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