General Description

The MAX6412–MAX6420 low-power microprocessor

supervisor circuits monitor system voltages from 1.6V to

5V. These devices are designed to assert a reset signal

its reset threshold or the manual reset input is asserted.

The reset output remains asserted for the reset timeout

threshold and the manual reset input is deasserted. The

reset timeout is externally set by a capacitor to provide

more flexibility.

The MAX6412/MAX6413/MAX6414 feature fixed thresholds

from 1.575V to 5V in approximately 100mV increments and

a manual reset input. The MAX6415/MAX6416/MAX6417

are offered with an adjustable reset input that can monitor

voltages down to 1.26V and the MAX6418/MAX6419/

MAX6420 are offered with one fixed input and one

adjustable input to monitor dual-voltage systems.

The MAX6412/MAX6415/MAX6418 have an active-low,

push-pull reset output. The MAX6413/MAX6416/

MAX6419 have an active-high, push-pull reset output

and the MAX6414/MAX6417/MAX6420 have an active-

low, open-drain reset output. All of these devices are

offered in a SOT23-5 package and are fully specified

from -40°C to +125°C.

Applications

Automotive

Medical Equipment

Intelligent Instruments

Portable Equipment

Battery-Powered Computers/Controllers

Embedded Controllers

Critical µP Monitoring

Set-Top Boxes

Computers

Features

o Monitor System Voltages from 1.6V to 5V

o Capacitor-Adjustable Reset Timeout Period

o Manual Reset Input (MAX6412/MAX6413/MAX6414)

o Adjustable Reset Input Option

(MAX6415–MAX6420)

o Dual-Voltage Monitoring

(MAX6418/MAX6419/MAX6420)

o Low Quiescent Current (1.7µA, typ)

o 3 RESET Output Options

Push-Pull RESET

Push-Pull RESET

Open-Drain RESET

o Power-Supply Transient Immunity

o Small SOT23-5 Packages

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

GND

SRT

15

MAX6412–

MAX6420

SOT23-5

TOP VIEW

2

34

RESET/RESET

RESET IN (MR)

( ) FOR THE MAX6412/MAX6413/MAX6414.

Pin Configuration

19-2336; Rev 1; 8/03

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Typical Operating Circuit appears at end of data sheet.

Selector Guide appears at end of data sheet.

PART

TEMP RANGE

PIN-PACKAGE

MAX6412UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6413UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6414UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6415UK-T

-40°C to +125°C

5 SOT23-5

MAX6416UK-T

-40°C to +125°C

5 SOT23-5

MAX6417UK-T

-40°C to +125°C

5 SOT23-5

MAX6418UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6419UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6420UK_ _-T

-40°C to +125°C

5 SOT23-5

Note: The MAX6412/MAX6413/MAX6414 and MAX6418/

thresholds from 1.575V to 5.0V in approximately 0.1V incre-

ments. Insert the desired nominal reset threshold suffix (from

Table 1) into the blanks following the letters UK. There are 33

standard versions with a required order increment of 2500

pieces. Sample stock is generally held on standard versions

only (see Standard Versions Table). Required order increment is

10,000 pieces for nonstandard versions. Contact factory for

availability. All devices are available in tape-and-reel only.