SN54LS181 데이터 시트보기 (PDF) - Motorola => Freescale
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SN54LS181 Datasheet PDF : 9 Pages
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SN54 / 74LS181
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
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
VOH
Input Clamp Diode Voltage
54
Output HIGH Voltage
74
– 0.65 – 1.5
2.5
3.5
2.7
3.5
V
VCC = MIN, IIN = – 18 mA
V
VCC = MIN, IOH = MAX, VIN = VIH
V
or VIL per Truth Table
VOL
Output LOW Voltage
Except G and P
Output G
Output P
54, 74
74
54, 74
54
74
0.25 0.4
0.35 0.5
0.7
0.6
0.5
V
IOL = 4.0 mA
V
IOL = 8.0 mA
VCC = VCC MIN,
V
IOL = 16 mA
VIN = VIL or VIH
per Truth Table
V
IOL = 8.0 mA
IOH
Output HIGH Current
54, 74
100
µA
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
Input HIGH Current
Mode Input
Any A or B Input
Any S Input
IIH
Cn Input
Mode Input
Any A or B Input
Any S Input
Cn Input
20
60
µA VCC = MAX, VIN = 2.7 V
80
100
0.1
0.3
0.4
mA VCC = MAX, VIN = 7.0 V
0.5
Input LOW Current
Mode Input
IIL
Any A or B Input
Any S Input
Cn Input
– 0.4
– 1.2 mA VCC = MAX, VIN = 0.4 V
– 1.6
– 2.0
IOS
Short Circuit Current (Note 2)
– 20
– 100 mA VCC = MAX
Power Supply Current
54
See Note 1A 74
ICC
54
See Note 1B
74
32
34
mA VCC = MAX
35
37
Note 1.
With outputs open, ICC is measured for the following conditions:
A. S0 through S3, M, and A inputs are at 4.5 V, all other inputs are grounded.
B. S0 through S3 and M are at 4.5 V, all other inputs are grounded.
Note 2: Not more than one output should be shorted at a time, nor for more than 1 second.
FAST AND LS TTL DATA
5-335
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