MAX6390LT datasheet(2/13 Pages) MAXIM

2 / 13 page

SC70/µDFN, Single/Dual Low-Voltage,

Low-Power µP Reset Circuits

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = full range, TA = -40°C to +125°C, unless otherwise specified. Typical values are at 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.

VCC to GND ..........................................................-0.3V to +6.0V

RESET Open-Drain Output....................................-0.3V to +6.0V

RESET, RESET (push-pull output) ..............-0.3V to (VCC + 0.3V)

MR, RESET IN.............................................-0.3V to (VCC + 0.3V)

Input Current (VCC) .............................................................20mA

Output Current (all pins) .....................................................20mA

Continuous Power Dissipation (TA = +70°C)

3-Pin SC70 (derate 2.9mW/°C above +70°C) ..............235mW

4-Pin SC70 (derate 3.1mW/°C above +70°C) ..............245mW

6-Pin µDFN (derate 2.1mW/°C above +70°C) ..........167.7mW

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

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

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage Range

VCC

1.0

5.5

VCC = 5.5V, no load

VCC = 3.6V, no load

VCC = 2.5V, no load

VCC Supply Current

ICC

VCC = 1.8V, no load

µA

TA = +25

°C

VTH -

1.5%

VTH

VTH +

1.5%

VCC Reset Threshold

(See Reset Thresholds table)

VTH

TA = -40

°C to +125°C

VTH -

2.5%

VTH

VTH +

2.5%

Reset Threshold Tempco

∆VTH/°C

ppm

/°C

VCC to Reset Delay

VCC falling at 10mV/µs from VTH + 100mV

to VTH - 100mV

µs

140

280

560

1120

2240

Reset Timeout Period

MAX6381–MAX6389

(See Reset Timeout table)

tRP

1200

2400

140

280

MR timeout period

150

300

1120

2240

Reset Timeout Period

MAX6390

tRP

VCC timeout period

1200

2400

VIL

0.3 x

VCC

VIH

VTH < 4V

0.7 x

VCC

VIL

0.8

MR Input Voltage

VIH

VTH > 4V

2.4

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