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SN74LS541MR1
Octal Buffer/Line Driver with 3−State Outputs
ON Semiconductor
SN74LS541MR1 Datasheet PDF : 6 Pages
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SN74LS541
AC CHARACTERISTICS
(T
A
= 25
°
C)
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Parameter
Propagation Delay,
Data to Output
Output Enable Time
to HIGH Level
Output Enable Time
to LOW Level
Output Disable Time
to HIGH Level
Output Disable Time
to LOW Level
Limits
Min
Typ
Max Unit
12
15
ns
12
18
15
32
ns
20
38
ns
10
18
ns
15
29
ns
Test Conditions
V
CC
= 5.0 V
C
L
= 45 pF
R
L
= 667
Ω
C
L
= 5.0 pF
AC WAVEFORMS
V
IN
V
OUT
1.3 V
t
PLH
1.3 V
Figure 1.
1.3 V
t
PHL
1.3 V
V
IN
V
OUT
1.3 V
t
PLH
1.3 V
1.3 V
t
PHL
1.3 V
Figure 2.
TO OUTPUT
UNDER TEST
V
CC
R
L
SW1
5 k
Ω
C
L
*
SW2
V
E
V
E
V
OUT
1.5 V
t
PZL
1.5 V
Figure 3.
1.5 V
t
PLZ
≈
1.5 V
V
OL
0.5 V
V
E
V
E
V
OUT
1.5 V
t
PZH
1.5 V
Figure 4.
1.5 V
t
PHZ
≥
V
OH
≈
1.5 V
0.5 V
SWITCH POSITIONS
SYMBOL
SW1
SW2
t
PZH
Open
Closed
t
PZL
Closed
Open
t
PLZ
Closed
Closed
t
PHZ
Closed
Closed
Figure 5.
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