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DM74LS191 Fiches technique(PDF) 5 Page - Fairchild Semiconductor

No de pièce DM74LS191
Description  Synchronous 4-Bit Up/Down Counter with Mode Control
Download  6 Pages
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74LS191 Fiches technique(HTML) 5 Page - Fairchild Semiconductor

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AC Electrical Characteristics
From (Input)
RL = 2 kΩ
Symbol
Parameter
To (Output)
CL = 15 pF
CL = 50 pF
Units
Min
Max
Min
Max
fMAX
Maximum Clock
20
20
MHz
Frequency
tPLH
Propagation Delay Time
Load to
33
43
ns
LOW-to-HIGH Level Output
Any Q
tPHL
Propagation Delay Time
Load to
50
59
ns
HIGH-to-LOW Level Output
Any Q
tPLH
Propagation Delay Time
Data to
22
26
ns
LOW-to-HIGH Level Output
Any Q
tPHL
Propagation Delay Time
Data to
50
62
ns
HIGH-to-LOW Level Output
Any Q
tPLH
Propagation Delay Time
Clock to
20
24
ns
LOW-to-HIGH Level Output
Ripple Clock
tPHL
Propagation Delay Time
Clock to
24
33
ns
HIGH-to-LOW Level Output
Ripple Clock
tPLH
Propagation Delay Time
Clock to
24
29
ns
LOW-to-HIGH Level Output
Any Q
tPHL
Propagation Delay Time
Clock to
36
45
ns
HIGH-to-LOW Level Output
Any Q
tPLH
Propagation Delay Time
Clock to
42
47
ns
LOW-to-HIGH Level Output
Max/Min
tPHL
Propagation Delay Time
Clock to
52
65
ns
HIGH-to-LOW Level Output
Max/Min
tPLH
Propagation Delay Time
Up/Down to
45
50
ns
LOW-to-HIGH Level Output
Ripple Clock
tPHL
Propagation Delay Time
Up/Down to
45
54
ns
HIGH-to-LOW Level Output
Ripple Clock
tPLH
Propagation Delay Time
Down/Up to
33
36
ns
LOW-to-HIGH Level Output
Max/Min
tPHL
Propagation Delay Time
Down/Up to
33
42
ns
HIGH-to-LOW Level Output
Max/Min
tPLH
Propagation Delay Time
Enable to
33
36
ns
LOW-to-HIGH Level Output
Ripple Clock
tPHL
Propagation Delay Time
Enable to
33
42
ns
HIGH-to-LOW Level Output
Ripple Clock


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