Datasheet
SDAS300 − MARCH 1995
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
: All inputs and I/O ports 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN74AS641 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range −65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN74AS641
UNIT
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
V
OH
High-level output voltage 5.5 V
I
OL
Low-level output current 64 mA
T
A
Operating free-air temperature 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS641
UNIT
PARAMETER
TEST CONDITIONS
MIN TYP
‡
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= −18 mA −1.2 V
I
OH
V
CC
= 4.5 V, V
OH
= 5.5 V 0.1 mA
V
OL
V
CC
= 4.5 V, I
OL
= 64 mA 0.35 0.55 V
I
I
Control inputs
V
CC
= 5.5 V
V
I
= 7 V 0.1
mA
I
I
A or B ports
V
CC
= 5.5 V
V
I
= 5.5 V 0.1
mA
I
IH
Control inputs
V
CC
= 5.5 V,
V
I
= 2.7 V
20
A
I
IH
A or B ports
§
V
CC
= 5.5 V, V
I
= 2.7 V
70
µA
I
IL
Control inputs
V
CC
= 5.5 V,
V
I
= 0.4 V
−0.5
mA
I
IL
A or B ports
§
V
CC
= 5.5 V, V
I
= 0.4 V
−0.75
mA
I
CC
V
CC
= 5.5 V
Outputs high 50 82
mA
I
CC
V
CC
= 5.5 V
Outputs low 84 136
mA
‡
All typical values are at V
CC
= 5 V, T
A
= 25°C.
§
For I/O ports, the parameters I
IH
and I
IL
include the off-state output current.