Datasheet

(All voltages referenced to GND.)
Supply Voltage V+ ...................................................-0.3V to +6V
SCL, SDA, AD0, AD2, RST, INT, P0–P7 ...............-0.3V to +6V
P0–P7 Sink Current ....................................................... 25mA
SDA Sink Current .............................................................. 10mA
INT Sink Current.................................................................10mA
Total V+ Current .................................................................50mA
Total GND Current ...........................................................100mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW
16-Pin TQFN (derate 15.6mW/°C above +70°C) ......1250mW
Operating Temperature Range ......................... -40°C to +125°C
Junction Temperature ...................................................... +150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow)
QSOP ..........................................................................+240°C
TQFN ........................................................................... +260°C
(V+ = +1.71V to +5.5V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V+ = +3.3V, T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage V+ 1.71 5.50 V
Power-On Reset Voltage V
POR
V+ falling 1.6 V
Standby Current
(Interface Idle)
I
STB
SCL and SDA and other digital inputs at V+ 0.6 1.5 µA
Supply Current
(Interface Running)
I+ f
SCL
= 400kHz; other digital inputs at V+ 23 55 µA
Input High Voltage
SDA, SCL, AD0, AD2, RST, P0–P7
V
IH
V+ < 1.8V 0.8 x V+
V
V+ ≥ 1.8 0.7 x V+
Input Low Voltage
SDA, SCL, AD0, AD2, RST, P0–P7
V
IL
V+ < 1.8V 0.2 x V+
V
V+ ≥ 1.8V 0.3 x V+
Input Leakage Current
SDA, SCL, AD0, AD2, RST, P0–P7
I
IH
, I
IL
SDA, SCL, AD0, AD2, RST, P0–P7 at V+ or
GND, internal pullup disabled
-0.2 +0.2 µA
Input Capacitance
SDA, SCL, AD0, AD2, RST, P0–P7
10 pF
Output Low Voltage P0–P7 V
OL
V+ = +1.71V, I
SINK
= 5mA 90 180
mV
V+ = +2.5V, I
SINK
= 10mA 110 210
V+ = +3.3V, I
SINK
= 15mA 130 230
V+ = +5V, I
SINK
= 20mA 140 250
Output Low Voltage SDA V
OLSDA
I
SINK
= 6mA 250 mV
Output Low Voltage INT V
OLINT
I
SINK
= 5mA 130 250 mV
Port Input Pullup Resistor R
PU
25 40 55 kΩ
www.maximintegrated.com
Maxim Integrated │ 2
MAX7321 I
2
C Port Expander with 8 Open-Drain I/Os
Electrical Characteristics
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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Absolute Maximum Ratings