SN74LS125AMR1 查看數據表（PDF） - ON Semiconductor
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SN74LS125AMR1 Datasheet PDF : 4 Pages
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SN74LS125A SN74LS126A
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
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
– 0.65
– 1.5
2.4
0.25
0.4
0.35
0.5
V
VCC = MIN, IIN = – 18 mA
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
V
IOL = 12 mA VCC = VCC MIN,
VIN = VIL or VIH
V
IOL = 24 mA per Truth Table
IOZH
IOZL
IIH
Output Off Current HIGH
Output Off Current LOW
Input HIGH Current
20
µA
– 20
µA
20
µA
0.1
mA
IIL
Input LOW Current
IOS
Short Circuit Current (Note 1)
– 40
LS125A
ICC
Power Supply Current
LS126A
– 0.4
mA
–225
mA
20
mA
22
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
VCC = MAX, VOUT = 2.4 V
VCC = MAX, VOUT = 0.4 V
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 7.0 V
VCC = MAX, VIN = 0.4 V
VCC = MAX
VCC = MAX
VIN = 0 V, VE = 4.5 V
VIN = 0 V, VE = 0 V
AC CHARACTERISTICS (TA = 25°C)
Limits
Symbol
Parameter
Min
Typ
Max
tPLH
tPLH
Propagation Delay,
tPHL
Data to Output
tPHL
Output Enable Time
tPZH
to HIGH Level
LS125A
LS126A
LS125A
LS126A
LS125A
LS126A
9.0
15
9.0
15
7.0
18
8.0
18
12
20
16
25
Output Enable Time
tPZL
to LOW Level
LS125A
LS126A
15
25
21
35
Output Disable Time
LS125A
20
tPHZ
from HIGH Level
LS126A
25
Output Disable Time
LS125A
20
tPLZ
from LOW Level
LS126A
25
Unit
Test Conditions
ns
Figure 2
ns
Figures 4, 5
ns
Figures 3, 5
ns
Figures 4, 5
ns
FIgures 3, 5
VCC = 5.0 V
CL = 45 pF
RL = 667 Ω
VCC = 5.0 V
CL = 5.0 pF
RL = 667 Ω
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