SC70/µDFN, Single/Dual Low-Voltage,

Low-Power µP Reset Circuits

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5

Pin Description

PIN

3-PIN SC70

4-PIN SC70

µDFN

MAX6381/

MAX6383

MAX6382

MAX6384/

MAX6386/

MAX6390

MAX6385

MAX6387/

MAX689

MAX6388

NAME

FUNCTION

1

(MAX6382/

MAX6385/

MAX6388)

2

—

2

—

2

RESET

Active-High Push-Pull Reset Output.

RESET changes from low to high when

threshold or MR is pulled low. RESET

remains high for the reset timeout

period after monitored voltages exceed

the reset thresholds or MR is released.

1

(MAX6381/

MAX6383/

MAX6384/

MAX6386/

MAX6387/

MAX6390)

2—

2

—

2

—

RESET

Active-Low Open-Drain/Push-Pull Reset

Output. RESET changes from high to low

or MR is pulled low. RESET remains low for

the reset timeout period after the monitored

voltages exceed the reset thresholds or MR

is released. Open-drain requires an

external pullup resistor.

2, 3, 5

(MAX6381/

MAX6382/

MAX6383)

2, 5

(MAX6384–

MAX6390)

—

—

—

—

—

—

N.C.

No Connection. Not Internally

connected.

3

(MAX6384/

MAX6385/

MAX6386/

MAX6390)

——

3

3

—

—

MR

Active-Low Manual Reset Input. Drive

low to force a reset. Reset remains

active as long as MR is low and for the

reset timeout period after MR is

released. Leave unconnected or

internal 63k

Ω (1.56kΩ for MAX6390)

3

(MAX6387/

MAX6388/

MAX6389)

——

—

—

3

3

RESET

IN

Auxiliary Reset Input. High-impedance

input to the auxiliary reset comparator.

Connect RESET IN to the center point of

an external resistor voltage-divider

network to set the reset threshold voltage.

IN falls below its threshold voltage.

4

(MAX6381–

MAX6390)

33

4

4

44

Supply Voltage for the device and input

6

(MAX6381–

MAX6390)

1

1

1

1

1

1

GND

Ground