MAX6701 Maxim, MAX6701 Datasheet

MAX6701

Manufacturer Part Number

MAX6701

Description

Low-Voltage / SOT23 P Supervisors with Power- Fail In/Out / Manual Reset / and Watchdog Timer

Manufacturer

Maxim

Datasheet

1.MAX6701.pdf (12 pages)

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Current page: 1 of 12
Download datasheet (206Kb)

The MAX6701–MAX6708 microprocessor (µP) supervisory

circuits reduce the complexity and components required

to monitor power-supply functions in µP systems. These

devices significantly improve system reliability and accu-

racy compared to separate ICs or discrete components.

The MAX6701–MAX6708 family provides four functions:

a reset output during power-up, power-down, and

brownout conditions; an independent watchdog output

that goes low if the watchdog input has not been toggled

within 1.6s; a 0.62V threshold detector for power-fail

warning; and an active-low manual reset input.

The MAX6701–MAX6708 family offers several pinout

options to accommodate a variety of multivoltage micro-

processor supervision applications.

The MAX6701(A)/MAX6702(A)/MAX6703(A) monitor

three supply voltages (one fixed threshold and two

adjustable) to drive a single reset output and include a

manual reset input and a watchdog timer with an inde-

pendent output. The MAX6704 monitors a single-supply

voltage to drive complementary reset outputs and

includes an independent adjustable power-fail-in/power-

fail-out comparator, a manual reset input, and a reset-

based watchdog timer. The MAX6705(A)/MAX6706(A)/

MAX6707(A) monitor a single-supply voltage to drive a

single reset output and include an independent

adjustable power-fail-in/power-fail-out comparator, a

manual reset input, and a watchdog timer with an inde-

pendent output. The MAX6708 is the same as the

MAX6704 but without the watchdog timer function.

See the Detailed Description for differences between

non-A and A versions.

19-1952; Rev 2; 8/03

Typical Operating Circuit and Selector Guide appear at end

of data sheet.

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.

Low-Voltage, SOT23 µP Supervisors with Power-

Computers

Controllers

Intelligent Instruments

Automotive Systems

Critical µP Power Monitoring

White Goods

Networking

Telecommunications

Fail In/Out, Manual Reset, and Watchdog Timer

________________________________________________________________ Maxim Integrated Products

General Description

Applications

o Small 8-Pin SOT23 Package

o Precision Monitoring of +5.0V, +3.3V, +3.0V, +2.5V

o 140ms Reset Timeout Delay

o Power-Fail Input with Independent Output;

o Dual Adjustable Reset Input for Triple-Voltage

o 1.6s Watchdog Timeout Period

o Independent Watchdog Output

o Manual Reset Input

o Four Reset Output Stage Options

o Guaranteed Reset Valid to V

o Immune to Short Falling V

o Low Cost, Few External Components

Insert the desired suffix letter (from the Threshold Suffix Guide

table) into the blank to complete the part number. All devices

must be ordered in increments of 2500 pieces. Sample stock is

typically held on standard versions only. Contact factory for

availability.

Ordering Information continued at end of data sheet.

MAX6701_KA-T

MAX6701A_KA-T

Pin Configurations continued at end of data sheet.

Supply Voltages

Monitor Inputs Down to 0.62V (MAX6704–MAX6708)

Monitoring (MAX6701(A)/MAX6702(A)/MAX6703(A))

(MAX6701(A)–MAX6707(A))

(MAX6701(A)/MAX6702(A)/MAX6703(A)/

MAX6705(A)/MAX6706(A)/MAX6707(A))

TOP VIEW

( ) ARE FOR MAX6702(A) ONLY.

Active Low Push-Pull (MAX6701(A), MAX6705(A))

Active Low Open Drain (MAX6703(A), MAX6707(A))

Active High Push-Pull (MAX6702(A), MAX6706(A))

Dual Active Low/High Push-Pull (MAX6704,

MAX6708)

PART

RST_IN1

GND

-40°C to +125°C

Ordering Information

TEMP RANGE

MAX6701(A)

MAX6702(A)

MAX6703(A)

SOT23

Pin Configurations

Transients

= 1V

WDO

RESET (RESET)

WDI

RST_IN2

PIN-PACKAGE

8 SOT23-8

Features

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