MAX7321 Maxim, MAX7321 Datasheet - Page 4
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MAX7321
Manufacturer Part Number
MAX7321
Description
The MAX7321 2-wire serial-interfaced peripheral features eight open-drain I/O ports with selectable internal pullups and transition detection
Manufacturer
Maxim
Datasheet
1.MAX7321.pdf
(17 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX7321AEE
Manufacturer:
MAXIM
Quantity:
306
Company:
Part Number:
MAX7321AEE+T
Manufacturer:
TDK
Quantity:
12 000
I
(T
4
2
A
= +25°C, unless otherwise noted.)
4–7, 9–12
_______________________________________________________________________________________
C Port Expander with 8 Open-Drain I/Os
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
QSOP
0
1, 3
-40
13
14
15
16
—
STANDBY CURRENT vs. TEMPERATURE
2
8
-25
V+ = +2.5V
-10 5
PIN
TEMPERATURE (°C)
20 35 50 65 80 95 110 125
V+ = +3.3V
2–5, 7–10
TQFN
15, 1
EP
16
11
12
13
14
6
V+ = +1.71V
V+ = +5.0V
f
SCL
= 0kHz
NAME
P0–P7
AD0,
GND
SDA
AD2
SCL
RST
INT
V+
EP
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).
Reset Input, Active Low. Drive RST low to clear the 2-wire interface.
Ground
Interrupt Output. INT is an open-drain output.
I
I
Positive Supply Voltage. Bypass V+ to GND with a ceramic capacitor of at least
0.047µF as close to the device as possible.
Exposed Pad. Connect exposed pad to GND.
Input/Output Ports. P0 to P7 are open-drain I/Os.
2
2
C-Compatible Serial Clock Input
C-Compatible Serial Data I/O
60
50
40
30
20
10
0
-40
SUPPLY CURRENT vs. TEMPERATURE
-25
V+ = +2.5V
-10 5 20
V+ = +1.71V
V+ = +3.3V
TEMPERATURE (°C)
35 50 65 80 95 110 125
Typical Operating Characteristics
V+ = +5.0V
f
SCL
= 400kHz
FUNCTION
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
V+ = +3.3V
I
SINK
= 15mA
OUTPUT VOLTAGE LOW
V+ = +1.71V
I
SINK
vs. TEMPERATURE
Pin Description
TEMPERATURE (°C)
= 5mA
V+ = +2.5V
I
SINK
= 10mA
V+ = +5.0V
I
SINK
= 20mA