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Description
74AC257 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
View to exact match
74AC257
Quad 2-Input Multiplexer with 3-STATE Outputs
Fairchild Semiconductor
74AC257 Datasheet PDF : 9 Pages
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9
AC Electrical Characteristics for ACT
Symbol
Parameter
t
PLH
Propagation Delay
I
n
to Z
n
t
PHL
Propagation Delay
I
n
to Z
n
t
PLH
Propagation Delay
S to Z
n
t
PHL
Propagation Delay
S to Z
n
t
PZH
Output Enable Time
t
PZL
Output Enable Time
t
PHZ
Output Disable Time
t
PLZ
Output Disable Time
Note 8:
Voltage Range 5.0 is 5.0V
±
0.5V
V
CC
(V)
(Note 8)
Min
5.0
1.5
5.0
2.0
5.0
2.0
5.0
2.5
5.0
2.0
5.0
2.0
5.0
2.5
5.0
2.0
Capacitance
Symbol
C
IN
C
PD
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
4.5
50.0
T
A
= +
25
°
C
C
L
=
50 pF
Typ
Max
5.0
7.0
6.0
7.5
7.0
9.5
7.0
10.5
6.0
8.0
6.0
8.0
6.5
9.0
6.0
7.5
T
A
= −
40
°
C to
+
85
°
C
C
L
=
50 pF
Min
Max
1.0
7.5
1.5
8.5
1.5
10.5
2.0
11.5
1.5
9.0
1.5
9.0
1.5
10.0
1.5
8.5
Units
pF
pF
V
CC
=
OPEN
V
CC
=
5.0V
Conditions
Units
ns
ns
ns
ns
ns
ns
ns
ns
5
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