MAX7321 datasheet(2/14 Pages) MAXIM

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I2C Port Expander with Eight Push-Pull Outputs

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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 .......................................-0.3V to +6V

O0–07...............................................................0.3V to V+ + 0.3V

00–07 Output Current .......................................................±25mA

SDA 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 Thin QFN (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

Power-On Reset Voltage

VPOR

1.6

Standby Current Voltage

(Interface Idle)

ISTB

SCL and SDA and other digital inputs at V+

0.6

1.5

µA

Supply Current

(Interface Running)

I+

fSCL = 400kHz; other digital inputs at V+

µA

V+ < 1.8V

0.8 x V+

Input High-Voltage

SDA, SCL, AD0, AD2, RST

VIH

V+

≥ 1.8V

0.7 x V+

V+ < 1.8V

0.2 x V+

Input Low-Voltage

SDA, SCL, AD0, AD2, RST

VIL

V+

≥ 1.8V

0.3 x V+

Input Leakage Current

SDA, SCL, AD0, AD2, RST

IIH, IIL

SDA, SCL, AD0, AD2, RST, O0–O7 at V+ or

GND

-0.2

+0.2

µA

Input Capacitance

SDA, SCL, AD0, AD2, RST

V+ = +1.71V, ISINK = 1mA

120

240

V+ = +2.5V, ISINK = 2mA

140

280

V+ = +3.3V, ISINK = 3mA

170

310

Output Low Voltage

O0–O7

VOL

V+ = +5V, ISINK = 5mA

220

380

V+ = +1.71V, ISOURCE = 1mA

V+ - 250

V+ - 130

V+ = +2.5V, ISOURCE = 2mA

V+ - 350 V+ - 200

V+ = +3.3V, ISOURCE = 3mA

V+ - 290 V+ - 150

Output High Voltage

O0–O7

VOH

V+ = +5V, ISOURCE = 5mA

V+ - 380

V+ - 230

Output Low Voltage SDA

VOLSDA

ISINK = 6mA

250

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