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SN54-74LS540 Datasheet(PDF) 2 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) 2 Page - ON Semiconductor

   
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BLOCK DIAGRAM
LS540
LS541
E1
E2
D1
D2
D3
D4
D5
D6
D7
D8
Y8
Y7
Y6
Y5
Y4
Y3
Y2
Y1
(1)
(19)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
E1
E2
D1
D2
D3
D4
D5
D6
D7
D8
Y8
Y7
Y6
Y5
Y4
Y3
Y2
Y1
(1)
(19)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
5-2
FAST AND LS TTL DATA
SN54/74LS540
• SN54/74LS541
INPUTS
OUTPUTS
E1
E2
D
LS540
LS541
L
L
H
L
H
H
X
X
Z
Z
X
H
X
Z
Z
L
L
L
H
L
L = LOW Voltage Level
H = HIGH Voltage Level
X = Immaterial
Z = High Impedance
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Sb l
P
Limits
Ui
T
C
di i
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
54
0.7
V
Guaranteed Input LOW Voltage for
VIL
Input LOW Voltage
74
0.8
V
pg
All Inputs
VIK
Input Clamp Diode Voltage
– 0.65
– 1.5
V
VCC = MIN, IIN = – 18 mA
VOH
Output HIGH Voltage
54, 74
2.4
3.4
V
VCC = MIN, IOH = – 3.0 mA
VOH
Output HIGH Voltage
54, 74
2.0
V
VCC = MIN, IOH = MAX, VIL = 0.5 V
VOL
Output LOW Voltage
54, 74
0.25
0.4
V
IOL = 12 mA
VCC = VCC MIN,
VIN =VIL or VIH
VOL
Output LOW Voltage
74
0.35
0.5
V
IOL = 24 mA
VIN = VIL or VIH
per Truth Table
VT+–VT–
Hysteresis
0.2
0.4
V
VCC = MIN
IOZH
Output Off Current HIGH
20
µA
VCC = MAX, VOUT = 2.7 V
IOZL
Output Off Current LOW
–20
µA
VCC = MAX, VOUT = 0.4 V
IIH
Input HIGH Current
20
µA
VCC = MAX, VIN = 2.7 V
IIH
Input HIGH Current
0.1
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
– 0.2
mA
VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
–40
– 225
mA
VCC = MAX
I
Power Supply Current
Total, Output HIGH
LS540
25
mA
V
MAX
I
LS541
32
mA
V
MAX
ICC
Total Output LOW
LS540
45
mA
VCC = MAX
CC
Total, Output LOW
LS541
52
mA
CC
Total Output 3-State
LS540
52
mA
Total Output 3-State
LS541
55
mA
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.


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