74LS192 查看數據表（PDF） - ON Semiconductor
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74LS192
ON Semiconductor
74LS192 Datasheet PDF : 7 Pages
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SN74LS192
MODE SELECT TABLE
MR
PL
CPU
CPD
MODE
H
X
X
L
L
X
L
H
H
L
H
L
H
H
X
Reset (Asyn.)
X
Preset (Asyn.)
H
No Change
H
Count Up
Count Down
L = LOW Voltage Level
H = HIGH Voltage Level
X = Don’t Care
= LOW-to-HIGH Clock Transition
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min
Typ
54
4.5
5.0
74
4.75
5.0
54
− 55
25
74
0
25
54, 74
54
74
Max
Unit
5.5
V
5.25
125
°C
70
− 0.4
mA
4.0
mA
8.0
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
VIH
Parameter
Input HIGH Voltage
Min Typ Max Unit
Test Conditions
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
54
VIL
Input LOW Voltage
74
0.7
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
54
2.5
3.5
VOH
Output HIGH Voltage
74
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
V or VIL per Truth Table
54, 74
VOL
Output LOW Voltage
74
0.25 0.4
0.35 0.5
20
IIH
Input HIGH Current
0.1
IIL
Input LOW Current
− 0.4
IOS
Short Circuit Current (Note 1)
− 20
− 100
ICC
Power Supply Current
34
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
V IOL = 4.0 mA
V IOL = 8.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
μA VCC = MAX, VIN = 2.7 V
mA VCC = MAX, VIN = 7.0 V
mA VCC = MAX, VIN = 0.4 V
mA VCC = MAX
mA VCC = MAX
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