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74LS155 Datasheet(PDF) 4 Page - Motorola, Inc

Part # 74LS155
Description  DUAL 1-OF-4 DECODER/ DEMULTIPLEXER
PDF  6 Pages
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

74LS155 Datasheet(HTML) 4 Page - Motorola, Inc

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FAST AND LS TTL DATA
SN54/74LS156
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
– 55
0
25
25
125
70
°C
VOH
Output Voltage — High
54, 74
5.5
V
IOL
Output Current — Low
54
74
4.0
8.0
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
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
All Inputs
VIL
Input LOW Voltage
74
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
– 0.65
– 1.5
V
VCC = MIN, IIN = – 18 mA
IOH
Output HIGH Current
54, 74
100
µA
VCC = MIN, VOH = MAX
VOL
Output LOW Voltage
54, 74
0.25
0.4
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
VOL
Output LOW Voltage
74
0.35
0.5
V
IOL = 8.0 mA
VIN = VIL or VIH
per Truth Table
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
– 0.4
mA
VCC = MAX, VIN = 0.4 V
ICC
Power Supply Current
10
mA
VCC = MAX
AC CHARACTERISTICS (TA = 25°C)
Symbol
Parameter
Limits
Unit
Test Conditions
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
tPLH
tPHL
Propagation Delay
Address, Ea or Eb to Output
25
34
40
51
ns
Figure 1
VCC = 5.0 V
CL = 15 pF
RL = 2.0 kΩ
tPLH
tPHL
Propagation Delay
Address to Output
31
34
46
51
ns
Figure 2
VCC = 5.0 V
CL = 15 pF
RL = 2.0 kΩ
tPLH
tPHL
Propagation Delay
Ea to Output
32
32
48
48
ns
Figure 1
RL = 2.0 kΩ
AC WAVEFORMS
Figure 1
Figure 2
VIN
VOUT
1.3 V
tPHL
1.3 V
1.3 V
1.3 V
tPLH
VIN
VOUT
1.3 V
tPHL
1.3 V
1.3 V
tPLH
1.3 V



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