SN74LS242D データシートの表示（PDF） - Motorola => Freescale
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SN74LS242D Datasheet PDF : 5 Pages
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SN54/74LS242 • SN54/74LS243
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
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
– 3.0
mA
54
– 12
mA
74
– 15
54
12
mA
74
24
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
VT+–VT–
VIK
VOH
VOL
Hysteresis
0.2
0.4
Input Clamp Diode Voltage
– 0.65 – 1.5
Output HIGH Voltage
54, 74 2.4
3.4
54, 74 2.0
Output LOW Voltage
54, 74
74
0.25 0.4
0.35 0.5
V VCC = MIN
V VCC = MIN, IIN = – 18 mA
V VCC = MIN, IOH = – 3.0 mA
V VCC = MIN, IOH = MAX
V IOL = 12 mA
V IOL = 24 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
IOZH
IOZL
IIH
IIL
IOS
Output Off Current HIGH
Output Off Current LOW
Input HIGH Current
D, E1, E2
E1, E2
D Input
Input LOW Current
Output Short Circuit Current (Note 1) – 40
Power Supply Current
Total, Output HIGH
40
– 200
20
0.1
0.1
– 0.2
– 225
µA VCC = MAX, VOUT = 2.7 V
µA VCC = MAX, VOUT = 0.4 V
µA VCC = MAX, VIN = 2.7 V
mA VCC = MAX, VIN = 7.0 V
mA VCC = MAX, VIN = 5.5 V
mA VCC = MAX, VIN = 0.4 V
mA VCC = MAX
38
ICC
Total, Output LOW
50
LS242
50
Total at HIGH Z
LS243
54
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
mA VCC = MAX
FAST AND LS TTL DATA
5-394
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