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MC14553B Datasheet(PDF) 3 Page - ON Semiconductor

Part No. MC14553B
Description  3−Digit BCD Counter
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC14553B Datasheet(HTML) 3 Page - ON Semiconductor

   
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MC14553B
http://onsemi.com
3
SWITCHING CHARACTERISTICS (Note 5) (CL = 50 pF, TA = 25_C)
Characteristic
Figure
Symbol
VDD
Min
Typ
(Note 6)
Max
Unit
Output Rise and Fall Time
tTLH, tTHL = (1.5 ns/pF) CL + 25 ns
tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns
tTLH, tTHL = (0.55 ns/pF) CL + 9.5 ns
2a
tTLH,
tTHL
5.0
10
15
100
50
40
200
100
80
ns
Clock to BCD Out
2a
tPLH,
tPHL
5.0
10
15
900
500
200
1800
1000
400
ns
Clock to Overflow
2a
tPHL
5.0
10
15
600
400
200
1200
800
400
ns
Reset to BCD Out
2b
tPHL
5.0
10
15
900
500
300
1800
1000
600
ns
Clock to Latch Enable Setup Time
Master Reset to Latch Enable Setup Time
2b
tsu
5.0
10
15
600
400
200
300
200
100
ns
Removal Time
Latch Enable to Clock
2b
trem
5.0
10
15
– 80
– 10
0
– 200
– 70
– 50
ns
Clock Pulse Width
2a
tWH(cl)
5.0
10
15
550
200
150
275
100
75
ns
Reset Pulse Width
2b
tWH(R)
5.0
10
15
1200
600
450
600
300
225
ns
Reset Removal Time
trem
5.0
10
15
– 80
0
20
– 180
– 50
– 30
ns
Input Clock Frequency
2a
fcl
5.0
10
15
1.5
5.0
7.0
0.9
2.5
3.5
MHz
Input Clock Rise Time
2b
tTLH
5.0
10
15
No
Limit
ns
Disable, MR, Latch Enable
Rise and Fall Times
tTLH,
tTHL
5.0
10
15
15
5.0
4.0
ms
Scan Oscillator Frequency
(C1 measured in
mF)
1
fosc
5.0
10
15
1.5/C1
4.2/C1
7.0/C1
Hz
5. The formulas given are for the typical characteristics only at 25
_C.
6. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.


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