Datasheet

MAX7320
I
2
C Port Expander with Eight Push-Pull Outputs
4 _______________________________________________________________________________________
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
0
0.4
0.2
1.0
0.8
0.6
1.2
1.4
1.8
1.6
2.0
-40 -10 5-25 20 35 50 65 80 95 110 125
STANDBY CURRENT vs. TEMPERATURE
MAX7320 toc01
TEMPERATURE (°C)
STANDBY CURRENT (μA)
V+ = +3.3V
V+ = +2.5V
V+ = +5.0V
V+ = +1.71V
f
SCL
= 0kHz
0
20
10
40
30
50
60
-40 -10 5 20-25 35 50 65 80 95 110 125
SUPPLY CURRENT vs. TEMPERATURE
MAX7320 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
V+ = +3.3V
V+ = +1.71V
V+ = +2.5V
f
SCL
= 400kHz
V+ = +5.0V
OUTPUT VOLTAGE LOW
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE LOW (V)
MAX7320 toc03
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
V+ = +3.3V
I
SINK
= 3mA
V+ = +5.0V
I
SINK
= 5mA
V+ = +2.5V
I
SINK
= 2mA
V+ = +1.71V
I
SINK
= 1mA
OUTPUT VOLTAGE HIGH
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE HIGH (V)
MAX7320 toc04
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
1
2
3
4
5
6
V+ = +5.0V
I
SOURCE
= 5mA
V+ = +3.3V
I
SOURCE
= 3mA
V+ = +1.71V
I
SOURCE
= 1mA
V+ = +2.5V
I
SOURCE
= 2mA
Pin Description
PIN
QSOP TQFN
NAME FUNCTION
1, 3 15, 1 AD0, AD2
Address Inputs. Select device slave address with AD0 and AD2. Connect AD0 and AD2
to either GND, V+, SCL, or SDA to give four logic combinations (see Table 3).
216 RST Reset Input, Active Low. Drive RST low to clear the 2-wire interface.
4–7, 9–12 2–5, 7–10 O0–O7 Output Ports. O0 to O7 are push-pull outputs.
8 6 GND Ground
13 11 N.C. No Connection. Not internally connected.
14 12 SCL I
2
C-Compatible Serial Clock Input
15 13 SDA I
2
C-Compatible Serial Data I/O
16 14 V+ Positive Supply Voltage. Bypass V+ to GND with a 0.047µF ceramic capacitor.
— EP EP Exposed Pad. Connect exposed pad to GND.