MAX6685 datasheet(2/7 Pages) MAXIM

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Dual-Output Remote-Junction

Temperature Switches

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD = 3.0V to 5.5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at VDD = 3.3V and TA = +25°C.) (Note 1)

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.

Voltages Referenced to GND

VDD, TLOW, THIGH.....................................................-0.3V to +6V

DXN .......................................................................-0.3V to +0.8V

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

Input Current .........................................................................5mA

Output Current ....................................................................20mA

Continuous Power Dissipation (TA = +70°C)

8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW

Operating Temperature Range .........................-40°C to +125°C

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

Storage Temperature Range .............................-65°C to +165°C

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

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

Power-Supply Range

VDD

3.0

5.5

Average Supply Current

IDD

200

500

µA

Supply Current During

Conversion

400

800

µA

Power-On Reset Threshold

POR

VDD falling edge

1.0

1.5

2.0

POR Threshold Hysteresis

VDD = 3.3V, TA = +25°C, TRJ = 0°C to +125°C

(Note 2)

-1.5

+1.5

Temperature Threshold

Accuracy

∆TTH

TA = 0°C to +100°C, TRJ = 0°C to +125°C

2.0

°C

Temperature Threshold

Hysteresis

THYST

5.0

°C

Supply Sensitivity of Temperature

Threshold

TA = +25°C, TRJ = 0°C to +125°C,

VDD = 3.0V to 5.5V

0.6

°C/V

Output Voltage High

VOH

ISOURCE = 1mA, MAX6685 TLOW only

VDD -

0.2

Output Voltage Low

VOL

ISINK = 1mA

0.2

Logic-Low Input Voltage

VIL

S1, S2

0.4

Logic-High Input Voltage

VIH

S1, S2

1.8

Input Current

S1, S2

µA

Open-Drain Output Leakage

Current

VOUT = 5.5V, TLOW and THIGH

1µA

Conversion Time

0.09

0.11

0.13

Sample Period

0.35

0.45

0.55

High level

100

120

Current Sourcing for External

Diode

Low level

µA

Note 1: All parameters are tested at +25°C. Temperature specifications over a range of -40°C to +125°C are guaranteed by design.

Note 2: TRJ is the temperature of the remote-sensing diode junction.

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