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MAX7315

8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection

Maxim Integrated 

8-Port I/O Expander with LED Intensity

Control, Interrupt, and Hot-Insertion Protection

ABSOLUTE MAXIMUM RATINGS

Voltage (with respect to GND)

V+ .............................................................................-0.3V to +4V

SCL, SDA, AD0, AD1, AD2, P0–P7 ..........................-0.3V to +6V

INT/O8 .....................................................................-0.3V to +8V

DC Current on P0–P7, INT/O8 ............................................55mA

DC Current on SDA.............................................................10mA

Maximum GND Current ....................................................190mA

Continuous Power Dissipation (TA = +70°C)

16-Pin TSSOP (derate 9.4mW/°C over +70°C) ............754mW

16-Pin QSOP (derate 8.3mW/°C over +70°C)..............666mW

16-Pin QFN (derate 14.7mW/°C over +70°C) ............1176mW

Operating Temperature Range (TMIN to TMAX)-40°C to +125°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

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.

ELECTRICAL CHARACTERISTICS

(Typical Operating Circuit, V+ = 2V to 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25°C.)

(Note 1)

PARAMETER

Operating Supply Voltage

Output Load External Supply

Voltage

Standby Current

(Interface Idle, PWM Disabled)

Supply Current

(Interface Idle, PWM Enabled)

Supply Current

(Interface Running, PWM

Disabled)

Supply Current

(Interface Running, PWM

Enabled)

Input High Voltage

SDA, SCL, AD0, AD1, AD2,

P0–P7

SYMBOL

V+

CONDITIONS

VEXT

SCL and SDA at V+; other

TA = +25°C

I+ digital inputs at V+ or GND; TA = -40°C to +85°C

PWM intensity control disabled TA = TMIN to TMAX

SCL and SDA at V+; other

TA = +25°C

I+ digital inputs at V+ or GND; TA = -40°C to +85°C

PWM intensity control enabled TA = TMIN to TMAX

fSCL = 400kHz; other digital TA = +25°C

I+ inputs at V+ or GND; PWM TA = -40°C to +85°C

intensity control disabled

TA = TMIN to TMAX

fSCL = 400kHz; other digital TA = +25°C

I+ inputs at V+ or GND; PWM TA = -40°C to +85°C

intensity control enabled

TA = TMIN to TMAX

VIH

MIN

2

0

0.7 

V+

TYP

1.2

7

40

51

MAX UNITS

3.6

V

5.5

V

2.3

2.6 µA

3.3

12.1

13.5 µA

14.4

76

78

µA

80

110

117 µA

122

V

Input Low Voltage

SDA, SCL, AD0, AD1, AD2,

VIL

P0–P7

0.3 

V

V+

Input Leakage Current

SDA, SCL, AD0, AD1, AD2,

P0–P7

IIH, IIL Input = GND or V+

-0.2

+0.2 µA

Input Capacitance

SDA, SCL, AD0, AD1, AD2,

P0–P7

8

pF

2 _______________________________________________________________________________________

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