TECHNICAL DATA
QUADRUPLE 2-INPUT
POSITIVE-AND GATE
This device contains four independent 2-input positive-
AND gates. They perform the Boolean functions Y =
A*B or Y = A + B in positive logic.
The IN74ALS08 is characterized for operation from
0
o
C to 70
o
C.
ORDERING INFORMATION
IN74LS08N Plastic
IN74ALS08D SOIC
T
A
= 0
to 70
C for all
packages
Logic Symbol
Logic Diagram (Positive Logic)
Function Table
INPUTS
OUTPUT
A
B
Y
H
H
H
L
X
L
X
L
L
IN74ALS08
IN74ALS08
2
ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR
TEMPERATURE RANGE
Supply voltage, Vcc
7V
Input voltage, V
I
7V
Operating free-air temperature range, T
A
0
o
C to 70
o
C
Storage temperature range
-65
o
C to 150
o
C
RECOMMENDED OPERATING CONDITIONS
MIN
NOM MAX UNIT
V
CC
Supply voltage
4.5
5
5.5
V
V
IH
High-level input voltage
2
V
V
IL
Low-level input voltage
0.8
V
I
OH
High-level output current
-0.4
mA
I
OL
Low-level output current
8
mA
T
A
Operating free-air temperature
0
70
o
C
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING FREE-
AIR TEMPERATURE RANGE
Parameter
Test Conditions
MIN
TYP** MAX UNIT
V
IK
V
CC
= 4.5V
I
I
=-18mA
-1.5
V
V
OH
V
CC
= 4.5V to 5.5V
I
OH
=-0.4mA
V
CC
-2
V
V
OL
V
CC
= 4.5V
I
OL
=4mA
0.25
0.4
V
I
OL
=8mA
0.35
0.5
V
I
I
V
CC
= 5.5V
V
I
=7V
0.1
mA
I
IH
V
CC
= 5.5V
V
I
=2.7V
20
A
I
IL
V
CC
= 5.5V
V
I
=0.4V
-0.1
m
I
O
*
V
CC
= 5.5V
V
O
=2.25V
-30
-112
m
I
CCH
V
CC
= 5.5V
V
I
=4.5V
1.3
2.4
m
I
CCL
V
CC
= 5.5V
V
I
=0
2.2
4
m
*- The output conditions have been chosen to produce a current that closely approximates one half of the true
short-circuit output current, I
OS
**- All typical values are at V
CC
=5V, T
A
=25
o
C
SWITCHING CHARACTERISTICS
Parameter From (input)
To (output)
V
CC
=4.5 V to 5.6V
C
L
= 50 pF
R
L
=500
T
A
=MIN to MAX*
UNIT
MIN MAX
t
PHL
A or B
Y
3 10
ns
t
PLH
4 14
ns
*- For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating
conditions.
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