MAX7359ETG+ datasheet(2/20 Pages) MAXIM

Part #	MAX7359ETG+

Description	2-Wire Interfaced Low-EMI Key Switch Controller/GPO

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Manufacturer	MAXIM [Maxim Integrated Products]

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2-Wire Interfaced Low-EMI

Key Switch Controller/GPO

2

_______________________________________________________________________________________

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.)

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

COL2/PORT2–COL7/PORT7 ....................................-0.3V to +4V

SDA, SCL, AD0,

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

All Other Pins ..............................................-0.3V to (VCC + 0.3V)

DC Current on COL2/PORT2–COL7/PORT7 ......................25mA

GND Current .......................................................................80mA

Continuous Power Dissipation (TA = +70°C)

24-Pin TQFN (derate 15.4mW/°C above +70°C)..........1229mW

Operating Temperature Range (TMIN to TMAX) .....-40°C to +85°C

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

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

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

ELECTRICAL CHARACTERISTICS

(VCC = 1.62V to 3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 2.5V, TA = +25°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Supply Voltage

VCC

1.62

3.60

V

All key switches open, oscillator running,

COL2–COL7 configured as key switches

25

60

Operating Supply Current

ICC

N keys pressed

(25 +

20 x N)

µA

Sleep-Mode Supply Current

ISL

0.6

5

µA

POR

1.0

1.6

V

POR Hysteresis

PORHYST

VCC rising

42

mV

Key-Switch Source Current

IKEY

20

35

µA

Key-Switch Source Voltage

VKEY

Operating mode

0.42

0.55

V

Key-Switch Resistance

RKEY

(Note 3)

5

k

Ω

Startup Time from Shutdown

tSTART

2

2.4

ms

Output Low Voltage

COL2/PORT2 to COL7/PORT7

VOLPORT

ISINK = 10mA

0.2

V

INT Output

VOLINT

ISINK = 10mA

0.5

V

Oscillator Frequency

FOSC

64

kHz

SERIAL-INTERFACE SPECIFICATIONS

Serial Bus Timeout

tOUT

With bus timeout enabled

10

40

ms

Input High Voltage

SDA, SCL, AD0

VIH

0.7 x

VCC

V

Input Low Voltage

SDA, SCL, AD0

VIL

0.3 x

VCC

V

Output Low Voltage SDA

VOLPORT

ISINK = 10mA

0.4

V

Input Leakage Current

VCC = 0 to 6V

-1

+1

µA

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