2-Wire-Interfaced, 16-Bit, I/O Port Expander
with Interrupt and Hot-Insertion Protection
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY CURRENT
vs. TEMPERATURE
STANDBY SUPPLY CURRENT
vs. TEMPERATURE
100
90
80
70
60
50
40
30
20
10
0
100
12
f
= 400kHz
SCL = V+
ALL I/Os UNLOADED
f
= 400kHz
SCL
SCL
90
80
70
60
50
40
30
20
10
0
ALL I/Os UNLOADED
ALL I/Os UNLOADED
10
8
MAX7318
V+ = 5V
V+ = 5V
V+ = 3.3V
6
V+ = 3.3V
4
2
0
V+ = 2V
V+ = 2V
50
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
-50 -25
0
25
75 100 125
-50 -25
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
I/O SINK CURRENT
vs. OUTPUT LOW VOLTAGE
I/O SINK CURRENT
vs. OUTPUT LOW VOLTAGE
I/O SINK CURRENT
vs. OUTPUT LOW VOLTAGE
24
50
45
40
35
30
25
20
15
10
5
50
45
40
35
30
25
20
15
10
5
V+ = 2V
V+ = 5V
V+ = 3.3V
22
20
18
16
14
12
10
8
T
A
= -40°C
T
A
= -40°C
T
A
= -40°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
A
T
A
= +125°C
T
= +125°C
T
A
= +125°C
6
4
2
0
0
0
0
0.1
0.2
0.3
(V)
0.4
0.5
0.6
0
0.1
0.2
0.3
(V)
0.4
0.5
0.6
0
0.1
0.2
V
0.3
(V)
0.4
0.5
V
V
OL
OL
OL
I/O SOURCE CURRENT
vs. OUTPUT HIGH VOLTAGE
I/O SOURCE CURRENT
vs. OUTPUT HIGH VOLTAGE
I/O OUTPUT LOW VOLTAGE
vs. TEMPERATURE
50
45
40
35
30
25
20
15
10
5
400
350
300
250
200
150
100
50
25
20
15
10
5
V+ = 3.3V
V+ = 2V
T
= -40°C
T
= -40°C
A
A
V+ = 5V, I
= 10mA
SINK
T
A
= +25°C
T
= +25°C
A
V+ = 2V, I
= 10mA
SINK
T
A
= +125°C
T
A
= +125°C
V+ = 5V, I
= 1mA
SINK
V+ = 2V, I
= 1mA
25
SINK
0
0
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
-50 -25
0
50
75 100 125
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
V+ - V (V)
OH
TEMPERATURE (°C)
V+ - V (V)
OH
4
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