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