SN74LS125A SN74LS126A
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
V
IH
V
IL
V
IK
V
OH
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
2.4
0.25
V
O
OL
I
OZH
I
OZL
I
IH
I
IL
I
OS
I
CC
Output LOW Voltage
0.35
Output Off Current HIGH
Output Off Current LOW
Input HIGH Current
0.1
Input LOW Current
Short Circuit Current (Note 1)
LS125A
Power Supply Current
LS126A
22
– 40
– 0.4
–225
20
mA
V
CC
= MAX
0.5
20
– 20
20
V
µA
µA
µA
mA
mA
mA
I
OL
= 24 mA
0.4
– 0.65
Min
2.0
0.8
– 1.5
Typ
Max
Unit
V
V
V
V
V
Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
All Inputs
V
CC
= MIN, I
IN
= – 18 mA
V
CC
= MIN, I
OH
= MAX, V
IN
= V
IH
or V
IL
per Truth Table
I
OL
= 12 mA
V
CC
= V
CC
MIN,
V
IN
= V
IL
or V
IH
per Truth Table
V
CC
= MAX, V
OUT
= 2.4 V
V
CC
= MAX, V
OUT
= 0.4 V
V
CC
= MAX, V
IN
= 2.7 V
V
CC
= MAX, V
IN
= 7.0 V
V
CC
= MAX, V
IN
= 0.4 V
V
CC
= MAX
V
IN
= 0 V, V
E
= 4.5 V
V
IN
= 0 V, V
E
= 0 V
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
(T
A
= 25°C)
Limits
Symbol
t
PLH
t
PLH
t
PHL
t
PHL
t
PZH
Output Enable Time
to HIGH Level
Output Enable Time
to LOW Level
Output Disable Time
from HIGH Level
Output Disable Time
from LOW Level
Propagation Delay,
g
y
Data to Output
Parameter
LS125A
LS126A
LS125A
LS126A
LS125A
LS126A
LS125A
LS126A
LS125A
LS126A
LS125A
LS126A
Min
Typ
9.0
9.0
7.0
8.0
12
16
15
21
Max
15
15
ns
18
18
20
ns
25
25
ns
35
20
ns
25
20
ns
25
FIgures 3, 5
3
Figures 4 5
4,
V
CC
= 5.0 V
C
L
= 5 0 pF
5.0 F
R
L
= 667
Ω
Figures 3 5
3,
Figures 4 5
4,
V
CC
= 5.0 V
C
L
= 45 pF
F
R
L
= 667
Ω
Figure 2
Unit
Test Conditions
t
PZL
t
PHZ
t
PLZ
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