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Компоненты Описание
74F648 Просмотр технического описания (PDF) - Fairchild Semiconductor
Номер в каталоге
Компоненты Описание
Список матч
74F648
Octal Transceiver/Register with 3-STATE Outputs
Fairchild Semiconductor
74F648 Datasheet PDF : 9 Pages
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AC Electrical Characteristics
74F646B
Symbol
Parameter
f
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Maximum Clock Frequency
Propagation Delay
Clock to Bus
Propagation Delay
Bus to Bus
Propagation Delay
SBA or SAB to A or B
Enable Time
OE to A or B
Disable Time
OE to A or B
Enable Time
DIR to A or B
Disable Time
DIR to A or B
T
A
= +
25
°
C
V
CC
= +
5.0V
C
L
=
50 pF
Min
Max
165
2.5
7.0
3.0
7.5
2.0
6.0
2.0
6.0
2.5
7.5
2.5
7.5
2.5
6.5
2.5
9.0
1.5
6.5
2.0
7.0
2.0
7.0
3.0
9.5
1.5
7.5
2.5
8.5
AC Operating Requirements
74F646B
Symbol
Parameter
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
W
(H)
t
W
(L)
Setup Time, HIGH or LOW
Bus to Clock
Hold Time, HIGH or LOW
Bus to Clock
Clock Pulse Width
HIGH or LOW
T
A
= +
25
°
C
V
CC
= +
5.0V
Min
Max
5.0
5.0
1.5
1.5
5.0
5.0
T
A
= −
55
°
C to
+
125
°
C
V
CC
= +
5.0V
C
L
=
50 pF
Min
Max
T
A
=
0
°
C to
+
70
°
C
V
CC
= +
5.0V
C
L
=
50 pF
Min
Max
150
2.5
8.0
3.0
8.0
2.0
7.0
2.0
7.0
2.5
8.5
2.5
8.5
2.5
8.0
2.5
10.0
1.5
7.5
2.0
8.5
2.0
8.5
3.0
10.0
1.5
8.5
2.5
9.5
T
A
= −
55
°
C to
+
125
°
C
V
CC
= +
5.0V
Min
Max
T
A
=
0
°
C to
+
70
°
C
V
CC
= +
5.0V
Min
Max
4.0
4.0
1.5
1.5
5.0
5.0
Units
MHz
ns
ns
ns
ns
ns
ns
ns
Units
ns
ns
ns
7
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