
MAX7319
I2C Port Expander with Eight Inputs and
Maskable Transition Detection
2
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ABSOLUTE MAXIMUM RATINGS
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.
(All voltages referenced to GND.)
Supply Voltage V+....................................................-0.3V to +6V
SCL, SDA, AD0, AD2, RST, INT, I0–I7......................-0.3V to +6V
SDA Input Current.............................................................. 10mA
INT Input Current ................................................................10mA
Total V+ Current..................................................................50mA
Total GND Current ...........................................................100mA
Continuous Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C over +70°C)..............667mW
16-Pin TQFN (derate 15.6mW/°C over +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
ELECTRICAL CHARACTERISTICS
(V+ = +1.71V to +5.5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at V+ = +3.3V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Supply Voltage
V+
1.71
5.50
V
Power-On Reset Voltage
VPOR
1.6
V
Standby Current (Interface Idle)
ISTB
SCL and SDA and other digital inputs at V+
0.6
1.5
A
Supply Current
(Interface Running)
I+
fSCL = 400kHz; other digital inputs at V+
23
55
A
V+ < 1.8V
0.8 x V+
Input High Voltage
SDA, SCL, AD0, AD2, RST, I0–I7
VIH
V+
≥ 1.8V
0.7 x V+
V
V+ < 1.8V
0.2 x V+
Input Low Voltage
SDA, SCL, AD0, AD2, RST, I0–I7
VIL
V+
≥ 1.8V
0.3 x V+
V
Input Leakage Current
SDA, SCL, AD0, AD2, RST, I0–I7
IIH, IIL
SDA, SCL, AD0, AD2, RST, I0–I7 at V+ or
GND
-0.2
+0.2
A
Input Capacitance
SDA, SCL, AD0, AD2, RST, I0–I7
10
pF
Output Low Voltage
SDA
VOLSDA
ISINK = 6mA
250
mV
Output Low Voltage
INT
VOLINT
ISINK = 5mA
100
250
mV
Port Input Pullup Resistor
RPU
25
40
55
k
Ω