SN74LS245
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
V
IH
V
IL
V
T+
–V
T–
V
IK
V
O
OH
Parameter
Input HIGH Voltage
Input LOW Voltage
Hysteresis
Input Clamp Diode Voltage
2.4
Output HIGH Voltage
2.0
0.25
V
O
OL
I
OZH
I
OZL
Output LOW Voltage
0.35
Output Off Current HIGH
Output Off Current LOW
A or B, DR or
E
I
IH
Input HIGH C
I
t
Current
t
DR or E
A or B
I
IL
I
OS
Input LOW Current
Output Short Circuit Current (Note 1)
Power Supply Current
Total, Output HIGH
I
CC
Total, Output LOW
Total at HIGH Z
– 40
0.5
20
– 200
20
0.1
0.1
– 0.2
– 225
70
90
95
mA
A
V
CC
= MAX
V
µA
µA
µA
mA
mA
mA
mA
I
OL
= 24 mA
0.4
V
V
0.2
0.4
– 0.65
3.4
– 1.5
Min
2.0
0.8
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
V
CC
= MIN, I
IN
= – 18 mA
V
CC
= MIN, I
OH
= – 3.0 mA
V
CC
= MIN, I
OH
= MAX
I
OL
= 12 mA
V
CC
= V
CC
MIN,
V
IN
= V
IL
or V
IH
per Truth Table
V
CC
= MAX, V
OUT
= 2.7 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
= 5.5 V
V
CC
= MAX, V
IN
= 0.4 V
V
CC
= MAX
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, V
CC
= 5.0 V, T
RISE
/ T
FALL
≤
6.0 ns)
Limits
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PLZ
t
PHZ
Parameter
Propagation Delay, Data to Output
Output Enable Time to HIGH Level
Output Enable Time to LOW Level
Output Disable Time from LOW Level
Output Disable Time from HIGH Level
Min
Typ
8.0
8.0
25
27
15
15
Max
12
12
40
40
25
25
Unit
ns
ns
ns
ns
ns
C
L
= 5.0 pF,
R
L
= 667
Ω
C
L
= 45 pF,
F,
R
L
= 667
Ω
Test Conditions
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