SN54-74LS540 ON Semiconductor, SN54-74LS540 Datasheet - Page 3

• Manufacturer Part Number: SN54-74LS540
• Description: OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
• Manufacturer: ON Semiconductor

AC CHARACTERISTICS
t PLH
t PLH
t PHL
t PHL
t PZH
t PZH
t PZL
t PZL
t PHZ
t PHZ
t PLZ
t PLZ
S
Symbol
b l
V E
V E
V E
V E
V OUT
P
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
V OUT
V IN
V OUT
V IN
V OUT
p g
p
p
p
p
i
1.5 V
1.5 V
1.3 V
(T A = 25 C)
1.3 V
P
Parameter
1.3 V
D l
1.5 V
t PZH
1.5 V
t PLH
t PZL
1.3 V
Figure 3
Figure 2
Figure 4
Figure 1
t PLH
y,
SN54/74LS540 SN54/74LS541
1.3 V
0.5 V
1.5 V
1.5 V
LS540
LS541
LS540
LS541
LS540
LS541
LS540
LS541
LS540
LS541
LS540
LS541
1.3 V
1.3 V
1.3 V
t PLZ
t PHL
t PHZ
0.5 V
t PHL
FAST AND LS TTL DATA
V OL
V OH
1.5 V
1.5 V
Min
AC WAVEFORMS
Limits
Typ
9.0
5-3
12
12
12
15
15
20
20
10
10
15
15
Max
15
15
15
18
25
32
38
38
18
18
25
29
UNDER TEST
TO OUTPUT
U i
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SYMBOL
t PZH
t PHZ
t PZL
t PLZ
SWITCH POSITIONS
SW1
C L *
Figure 5
T
Test Conditions
Closed
Closed
Closed
Open
V CC
SW1
V
V
V
V CC = 5.0 V
C
C L = 5 0 pF
C L = 5.0 pF
R L = 667
C L = 45 pF
C L = 45 pF
R L
L
5 k
C
5 0 F
di i
5 0 V
5 0 V
5 0 V
SW2
Closed
Closed
Closed
Open
SW2