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SN54-74LS540 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. SN54-74LS540
Description  OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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SN54-74LS540 Datasheet(HTML) 3 Page - ON Semiconductor

   
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AC WAVEFORMS
1.5 V
1.5 V
1.5 V
1.3 V
1.3 V
1.3 V
1.3 V
VIN
VOUT
tPLH
tPHL
1.3 V
1.3 V
VIN
VOUT
SW2
CL*
5 k
SW1
VCC
RL
TO OUTPUT
UNDER TEST
1.3 V
tPLH
tPHL
VE
VE
VOUT
VE
VE
VOUT
tPHZ
1.5 V
1.5 V
tPZL
tPLZ
VOL
1.5 V
≥VOH
0.5 V
tPZH
1.3 V
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
≈ 1.5 V
0.5 V
≈ 1.5 V
SWITCH POSITIONS
5-3
FAST AND LS TTL DATA
SN54/74LS540
• SN54/74LS541
AC CHARACTERISTICS (TA = 25°C)
Sb l
P
Limits
Ui
T
C
di i
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
tPLH
Pi
D l
LS540
9.0
15
V5 0 V
tPLH
Propagation Delay,
LS541
12
15
ns
V5 0 V
tPHL
pg
y,
Data to Output
LS540
12
15
ns
V5 0 V
tPHL
LS541
12
18
VCC = 5.0 V
CL =45pF
tPZH
Output Enable Time
LS540
15
25
ns
CL = 45 pF
RL = 667 Ω
tPZH
p
to HIGH Level
LS541
15
32
ns
L
tPZL
Output Enable Time
LS540
20
38
ns
tPZL
p
to LOW Level
LS541
20
38
ns
tPHZ
Output Disable Time
LS540
10
18
ns
C5 0 F
tPHZ
p
to HIGH Level
LS541
10
18
ns
CL =5 0pF
tPLZ
Output Disable Time
LS540
15
25
ns
CL = 5.0 pF
tPLZ
p
to LOW Level
LS541
15
29
ns
SYMBOL
SW1
SW2
tPZH
Open
Closed
tPZL
Closed
Open
tPLZ
Closed
Closed
tPHZ
Closed
Closed


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