Datasheet

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
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SDAS205A − APRIL 1982 − REVISED DECEMBER 1994
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 4.5 V to 5.5 V,
C
L
= 50 pF,
R
L
= 500 Ω
,
T
A
= MIN to MAX
†
UNIT
PARAMETER
(INPUT)
(OUTPUT)
SN54ALS151 SN74ALS151
UNIT
MIN MAX MIN MAX
t
PLH
A, B, or C
Y
4 21 4 18
ns
t
PHL
A, B, or C Y
7 35 8 24
ns
t
PLH
A, B, or C
W
5 36 7 24
ns
t
PHL
A, B, or C W
7 26 7 23
ns
t
PLH
Any D
Y
3 14 3 10
ns
t
PHL
Any D
Y
5 21 5 15
ns
t
PLH
Any D
W
3 23 3 15
ns
t
PHL
Any D
W
4 20 4 15
ns
t
PLH
G
Y
4 21 4 18
ns
t
PHL
G
Y
4 25 4 19
ns
t
PLH
G
W
5 27 5 19
ns
t
PHL
G
W
5 26 5 23
ns
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN74AS151 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
SN74AS151
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
I
OH
High-level output current −15 mA
I
OL
Low-level output current 48 mA
T
A
Operating free-air temperature 0 70 °C