SN54ALS857, SN74ALS857
HEX 2-TO-1 UNIVERSAL MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS170A – DECEMBER 1982 – REVISED JANUARY 1995
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
I
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, T : SN54ALS857 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
A
SN74ALS857 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
SN54ALS857
MIN NOM MAX
SN74ALS857
MIN NOM MAX
UNIT
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
IH
0.7
–1
0.8
–2.6
24
V
IL
I
I
mA
mA
°C
OH
12
OL
T
A
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54ALS857
SN74ALS857
PARAMETER
TEST CONDITIONS
UNIT
‡
‡
MIN TYP
MAX
MIN TYP
MAX
V
V
V
= 4.5 V,
I = –18 mA
–1.5
–1.5
V
IK
CC
I
= 4.5 V to 5.5 V,
I
I
I
I
I
= –0.4 mA
= –1 mA
= –2.6 mA
= 12 mA
= 24 mA
= 2.7 V
V
–2
V
CC
–2
CC
OH
OH
OH
OL
OL
CC
2.4
V
OH
3.3
V
V
= 4.5 V
= 4.5 V
CC
CC
2.4
3.2
0.25
0.35
0.25
0.4
0.4
0.5
20
V
OL
V
V
I
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V
20
–20
0.1
20
µA
µA
OZH
OZL
I
O
O
V
= 0.4 V
–20
0.1
20
V = 7 V
I
mA
µA
V = 2.7 V
I
IH
V = 0.4 V
I
–0.2
–70
24
–0.2
–70
24
mA
mA
IL
§
V
O
= 2.25 V
–15
–15
O
Outputs high
Outputs low
11
16
18
11
16
18
V
CC
= 5.5 V,
I
33
33
mA
CC
Outputs disabled
36
36
‡
§
All typical values are at V
= 5 V, T = 25°C.
A
CC
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
.
OS
NOTE 1:
I
is measured with all possible inputs grounded while achieving the stated output conditions.
CC
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265