MAX821 datasheet(4/8 Pages) MAXIM

4 / 8 page

4-Pin µP Voltage Monitors with Pin-Selectable

Power-On Reset Timeout Delay

_______________________________________________________________________________________

____________________________Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

0.997

-40

NORMALIZED RESET THRESHOLD

vs. TEMPERATURE

0.999

0.998

TEMPERATURE (°C)

1.002

1.001

1.000

-20

100

1.003

______________________________________________________________Pin Description

GND

Ground

RESET

Active-Low Reset Output. RESET is low while VCC is below the reset threshold. It remains

low for the reset timeout period after the reset condition is terminated. The reset timeout

period is determined by the SRT input.

–

RESET

Active-High Reset Output. RESET is high while VCC is below the reset threshold. It remains

high for the reset timeout period after the reset condition is terminated. The reset timeout

period is determined by the SRT input.

SRT

Set Reset Timeout Input. Connect to GND for 1ms (max) delay; connect to VCC for 20ms

(min) delay; leave unconnected for 100ms (min) delay.

VCC

Supply Voltage

–

NAME

FUNCTION

MAX821

MAX822

-40

MAX82_R/S/T POWER-DOWN RESET DELAY

vs. TEMPERATURE

TEMPERATURE (°C)

-20

100

VCC FALLING AT 1mV/µs

VCC FALLING AT 10mV/µs

-40

MAX82_L/M POWER-DOWN RESET DELAY

vs. TEMPERATURE

TEMPERATURE (°C)

-20

100

VCC FALLING AT 1mV/µs

VCC FALLING AT 10mV/µs

0.90

-40

NORMALIZED SUPPLY

CURRENT vs. TEMPERATURE

0.95

TEMPERATURE (°C)

1.05

1.00

-20

100

1.10

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