Datasheet

STANDBY CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
STANDBY CURRENT (µA)
MAX7325 toc01
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
V+ = +3.3V
V+ = +5.0V
V+ = +2.5V
V+ = +1.71V
f
SCL
= 0kHz
SUPPLY CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
MAX7325 toc02
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
10
20
30
40
50
60
V+ = +3.3V
V+ = +5.0V
V+ = +2.5V
V+ = +1.71V
f
SCL
= 400kHz
4
Maxim Integrated
MAX7325
I
2
C Port Expander with 8 Push-Pull
and 8 Open-Drain I/Os
OUTPUT VOLTAGE LOW
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE LOW (V)
MAX7325 toc03
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
0.05
0.10
0.15
0.20
0.25
V+ = +3.3V
I
SINK
= 15mA
V+ = +5.0V
I
SINK
= 20mA
V+ = +2.5V
I
SINK
= 10mA
V+ = +1.71V
I
SINK
= 5mA
OUTPUT VOLTAGE HIGH
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE HIGH (V)
MAX7325 toc04
-40 -25 -10 5 20 35 50 65 80 95 110 125
0
1
2
3
4
5
6
V+ = +3.3V
I
SOURCE
= 5mA
V+ = +5.0V
I
SOURCE
= 10mA
V+ = +2.5V I
SOURCE
= 5mA
V+ = +1.71V I
SOURCE
= 2mA
Pin Description
PIN
QSOP TQFN
NAME FUNCTION
122 INT Interrupt Output, Active Low. INT is an open-drain output.
223 RST Reset Input, Active Low. Drive RST low to clear the 2-wire interface.
3, 21 24, 18 AD2, AD0
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 Tables 2 and 3).
4–11 1–8 P0–P7 Open-Drain I/O Ports
12 9 GND Ground
13–20 10–17 O8–O15 Output Ports. O8–O15 are push-pull outputs rated at 20mA.
22 19 SCL I
2
C-Compatible Serial-Clock Input
23 20 SDA I
2
C-Compatible Serial-Data I/O
24 21 V+ Positive Supply Voltage. Bypass V+ to GND with a ceramic capacitor of at least 0.047µF.
— — EP Exposed Paddle (TQFN Only). Connect exposed pad to GND.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)