Rainbow-electronics MAX6869 Manual do Utilizador descarregar pdf (Página 2)

MAX6854–MAX6869

Nanopower µP Supervisory Circuits with

Optional Manual Reset, Watchdog Timer

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= 1.2V to 5.5V, T

= -40°C to +85°C, unless otherwise specified. Typical values are at V

= 2.5V, T

= +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.

, Open-Drain RESET to GND ..........................-0.3V to +6.0V

MR, Push-Pull RESET, RESET,

WDI, CT, I.C............................................-0.3V to (V

+ 0.3V)

Input Current, Output Current (all pins)............................±20mA

Continuous Power Dissipation (T

= +70°C)

5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW

Operating Temperature Range ...........................-40°C to +85°C

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

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

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

PARAMETER

SYMBOL

CONDITIONS MIN

TYP

MAX

UNITS

≥ 0°C 1.1 5.5

Supply Voltage V

= -40°C to +85°C 1.2 5.5

= 5.0V 210 400 nA

= 3.3V 190 380 nA

> V

, no load,

reset output

deasserted (Note 2)

= 1.8V 170 370 nA

Supply Current I

< V

, no load, reset output asserted

715µA

Reset Threshold V

falling (see Table 2)

2.5%

Reset Threshold Hysteresis V

HYST

Reset asserted to reset deasserted 0.5

D1 10 15 25

D2 40 60 80

D3 150 225 300

1200 1800 2400

D5 300 450 600

Reset Timeout Period t

= V

+ 150mV

(Figures 2 and 3)

D6 600 900

1200

to Reset Delay t

falling from (V

+ 100mV) to

- 100mV) at 10mV/µs

40 µs

≥ 1.1V, I

SINK

= 50µA,

RESET asserted, T

≥ 0°C

0.3

≥ 1.2V, I

SINK

= 100µA,

RESET asserted

0.3

≥ 2.12V, I

SINK

= 1.2mA,

RESET asserted

0.3

≥ 1.71V, I

SOURCE

= 200µA,

RESET deasserted, push-pull RESET only

0.8 x V

RESET Output Voltage

≥ 2.38V, I

SOURCE

= 500µA,

RESET deasserted, push-pull RESET only

0.8 x V

Open-Drain RESET Leakage

Current

LKG

RESET deasserted 25 nA

1 2 3 4 5 6 7 ... 16 17

MAX6854–MAX6869 1

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