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Part Name
Description
74F845 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
View to exact match
74F845
8-Bit Transparent Latch
Fairchild Semiconductor
74F845 Datasheet PDF : 6 Pages
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AC Electrical Characteristics
Symbol
Parameter
t
PLH
Propagation Delay
t
PHL
D
n
to O
n
t
PLH
Propagation Delay
t
PHL
LE to O
n
t
PLH
Propagation Delay
PRE to O
n
t
PHL
Propagation Delay
CLR to O
n
t
PZH
Output Enable Time
t
PZL
OE to O
n
t
PHZ
Output Disable Time
t
PLZ
OE to O
n
AC Operating Requirements
Symbol
Parameter
t
S
(H)
t
S
(L)
t
H
(H)
t
H
(L)
t
W
(H)
t
W
(L)
t
W
(L)
t
REC
t
REC
Setup Time, HIGH or LOW
D
n
to LE
Hold Time, HIGH or LOW
D
n
to LE
LE Pulse Width, HIGH
PRE Pulse Width, LOW
CLR Pulse Width, LOW
PRE Recovery Time
CLR Recovery Time
T
A
= +
25
°
C
V
CC
= +
5.0V
C
L
=
50 pF
Min
Typ
Max
2.5
4.8
8.0
1.5
3.6
6.5
5.0
8.1
12.0
2.0
4.4
7.5
3.0
5.9
10.0
3.0
6.5
10.0
2.5
5.8
9.5
2.5
7.6
12.0
1.0
3.1
7.5
1.0
2.8
6.5
T
A
=
0
°
C to
+
70
°
C
V
CC
= +
5.0V
C
L
=
50 pF
Min
Max
2.0
9.0
1.5
7.0
4.5
13.5
2.0
8.0
2.5
11.0
2.5
11.0
2.0
10.5
2.0
13.0
1.0
8.5
1.0
7.5
Units
ns
ns
ns
ns
ns
ns
T
A
= +
25
°
C
V
CC
= +
5.0V
Min
Max
2.0
2.0
2.5
3.0
4.0
5.0
5.0
10.0
12.0
T
A
=
0
°
C to
+
70
°
C
V
CC
= +
5.0V
Min
Max
2.5
2.5
3.0
3.5
4.0
5.0
5.0
10.0
13.0
Units
ns
ns
ns
ns
ns
ns
ns
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