SN54-74LS155 データシートの表示（PDF） - Motorola => Freescale
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SN54-74LS155 Datasheet PDF : 4 Pages
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SN54 / 74LS156
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
VOH
IOL
Output Voltage — High
Output Current — Low
Min
Typ
Max
Unit
54
4.5
5.0
5.5
V
74
4.75
5.0
5.25
54
– 55
25
125
°C
74
0
25
70
54, 74
5.5
V
54
4.0
mA
74
8.0
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Min Typ Max Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
54
VIL
Input LOW Voltage
74
0.7
Guaranteed Input LOW Voltage for
0.8
V
All Inputs
VIK
IOH
VOL
Input Clamp Diode Voltage
Output HIGH Current
54, 74
Output LOW Voltage
54, 74
74
– 0.65
0.25
0.35
– 1.5
100
0.4
0.5
V
VCC = MIN, IIN = – 18 mA
µA VCC = MIN, VOH = MAX
V
IOL = 4.0 mA
V
IOL = 8.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
IIH
Input HIGH Current
IIL
Input LOW Current
ICC
Power Supply Current
20
0.1
– 0.4
10
µA VCC = MAX, VIN = 2.7 V
mA VCC = MAX, VIN = 7.0 V
mA VCC = MAX, VIN = 0.4 V
mA VCC = MAX
AC CHARACTERISTICS (TA = 25°C)
Symbol
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Parameter
Propagation Delay
Address, Ea or Eb to Output
Propagation Delay
Address to Output
Propagation Delay
Ea to Output
Limits
Min Typ Max Unit
25
34
40
51
ns
31
34
46
51
ns
32
32
48
48
ns
Test Conditions
Figure 1
Figure 2
Figure 1
VCC = 5.0 V
CL = 15 pF
RL = 2.0 kΩ
VIN
VOUT
AC WAVEFORMS
1.3 V
tPHL
1.3 V
1.3 V
tPLH
1.3 V
Figure 1
VIN
VOUT
1.3 V
tPHL
1.3 V
1.3 V
tPLH
1.3 V
Figure 2
FAST AND LS TTL DATA
5-4
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