8-Pin µP Supervisory Circuits

with ±1.5% Reset Accuracy

6

_______________________________________________________________________________________

0

2

4

6

8

10

12

14

16

2.5

2.6

2.7

2.8

2.9

3.0

BATTERY CURRENT

vs. INPUT SUPPLY VOLTAGE

1000

100

10

1

1

100

10

1000

OUTPUT CURRENT

SLOPE = 1.0

Ω

1000

100

10

1

10

100

BATT to OUT VOLTAGE vs.

OUTPUT CURRENT

SLOPE = 12

Ω

1000

100

10

1

1

100

10

1000

MAXIMUM TRANSIENT DURATION vs.

RESET THRESHOLD OVERDRIVE

RESET THRESHOLD OVERDRIVE (mV)

RESET OCCURS

____________________________Typical Operating Characteristics (continued)

______________________________________________________________Pin Description

RESET

LOWLINE

Active-Low Reset Output.

threshold (or during a watchdog timeout for the MAX801). It remains low 200ms after

RESET has a strong pull-down but a relatively weak pull-up, and can be wire-OR con-

3

3

NAME

above the reset threshold. Use

LOWLINE to generate an NMI, initiating an orderly shut-

2

2

Input Supply Voltage, nominally +5V. Bypass with a 0.1µF capacitor to GND.

1

1

MAX801

MAX808

FUNCTION

PIN

GND

Ground

4

4