Open-Drain SOT µP Reset Circuit

_______________________________________________________________________________________

3

6

0

-50

-30

30

90

SUPPLY CURRENT vs. TEMPERATURE

2

1

5

TEMPERATURE (°C)

-10

10

50

3

4

70

6

0

0

1

35

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

2

1

5

SUPPLY VOLTAGE (V)

2

3

4

4

50

0

-50

-30

10

90

POWER-DOWN RESET DELAY

vs. TEMPERATURE

10

40

TEMPERATURE (°C)

-10

20

30

30

50

70

1.04

0.96

-50

-30

10

90

NORMALIZED RESET TIMEOUT PERIOD

0.97

0.98

1.02

1.00

1.03

TEMPERATURE (°C)

-10

0.99

1.01

30

50

70

1.006

0.994

-50

-30

10

90

NORMALIZED RESET THRESHOLD

0.996

0.998

1.004

1.000

TEMPERATURE (°C)

-10

1.002

30

50

70

100

0

10

100

1000

MAXIMUM TRANSIENT DURATION

vs. RESET COMPARATOR OVERDRIVE

20

40

60

80

RESET OCCURS

ABOVE CURVE

__________________________________________Typical Operating Characteristics

______________________________________________________________Pin Description

NAME

FUNCTION

1

GND

Ground

2

RESET

Active-Low Open-Drain Output. Connect to an external pull-up resistor. Can be pulled up to a voltage

PIN

3

MR

Manual Reset Input. A logic low on MR asserts reset. Reset remains asserted as long as MR is low, and

4

Supply Voltage and Reset Threshold Monitor Input