MAX6832HXRD3+T Maxim Integrated Products, MAX6832HXRD3+T Datasheet

MAX6832HXRD3+T

Manufacturer Part Number

MAX6832HXRD3+T

Description

IC MPU SUPERVISOR SC70-3

Manufacturer

Maxim Integrated Products

Type

Simple Reset/Power-On Resetr

Datasheet

1.MAX6832FXRD3T.pdf (11 pages)

Specifications of MAX6832HXRD3+T

Number Of Voltages Monitored

Output

Push-Pull, Totem Pole

Reset

Active Low

Reset Timeout

140 ms Minimum

Voltage - Threshold

1.313V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SC-70-3, SOT-323-3

Monitored Voltage

1.2 V to 1.8 V

Output Type

Active Low, Push-Pull

Manual Reset

Not Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

210 ms

Supply Voltage (max)

3.6 V

Supply Voltage (min)

0.55 V

Supply Current (typ)

16 uA

Maximum Power Dissipation

235 mW

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Power Fail Detection

Undervoltage Threshold

1.275 V

Overvoltage Threshold

1.35 V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

MAX6832HXRD3+T
MAX6832HXRD3+TTR

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The MAX6832–MAX6840 are microprocessor (µP)

supervisory circuits used to monitor low-voltage power

supplies in µP and digital systems. They provide excel-

lent circuit reliability and low cost by eliminating exter-

nal components and adjustments when used with

+1.2V to +1.8V powered circuits.

These devices assert a reset signal whenever the V

supply voltage declines below a preset threshold or

whenever manual reset (MR) is asserted. Reset remains

asserted for a fixed timeout delay after V

above the reset threshold or when manual reset is

deasserted. Five different timeout periods are available:

70µs (voltage detector), 1.5ms, 30ms, 210ms, and 1.68s.

Reset thresholds suitable for operation with a variety of

supply voltages are available.

The MAX6832/MAX6835/MAX6838 have a push-pull

active-low reset output (RESET). The MAX6833/

MAX6836/MAX6839 have a push-pull active-high reset

output (RESET) and the MAX6834/MAX6837/MAX6840

have an open-drain active-low reset output (RESET). The

open-drain active-low reset output requires a pullup resis-

tor that can be connected to a voltage higher than V

The MAX6835/MAX6836/MAX6837 feature a debounced

manual reset input (MR), while the MAX6838/MAX6839/

MAX6840 provide a RESET-IN input allowing the user to

externally adjust the reset threshold. The reset compara-

tor is designed to ignore fast transients on V

Low supply current of 7.5µA makes the MAX6832–

MAX6840 ideal for use in portable equipment. These

devices are available in 3- and 4-pin SC70 packages.

19-2242; Rev 2; 12/05

Pin Configurations, 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.

Computers

Controllers

Intelligent Instruments

Critical µP and µC Power Monitoring

Portable/Battery-Powered Equipment

Ultra-Low-Voltage SC70 Voltage Detectors

________________________________________________________________ Maxim Integrated Products

General Description

Applications

has risen

♦ Factory-Set Reset Threshold Voltages for

♦ Low Power Consumption: 7.5µA (typ)

♦ Space-Saving 3- and 4-Pin SC70 Packages

♦ ±2.5% Reset Threshold Accuracy Over

♦ Five Different Timeout Periods Available: 70µs

♦ Three Reset Output Configurations

♦ Guaranteed Reset Valid to V

♦ Adjustable Threshold Reset-In Option

♦ Manual Reset Input Option

♦ Immune to Short Negative V

♦ Pin Compatible with MAX803/MAX809/MAX810,

Insert the desired suffix letter from the Threshold Suffix Guide

(MAX6832–MAX6837) and the Active Timeout Period Guide

tables into the blanks to complete the part number. Sample

stock is generally available on standard versions only (see

Standard Versions table). Standard versions require a minimum

order increment of 2.5k units. Nonstandard versions must be

ordered in 10k unit increments. Contact factory for availability.

All parts are offered in tape-and-reel only.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

MAX6832_XRD_-T

MAX6833_XRD_-T

MAX6834_XRD_-T

MAX6835_XSD_-T

MAX6836_XSD_-T

MAX6837_XSD_-T

MAX6838XSD_-T

MAX6839XSD_-T

MAX6840XSD_-T

Nominal Supplies from 1.2V to 1.8V

Temperature

(voltage detector), 1.5ms, 30ms, 210ms, and 1.68s

MAX6711/MAX6712/MAX6713, and

MAX6381–MAX6390 Series

and µP Reset Circuits

Push-Pull RESET

Open-Drain RESET

0.55V—Active-Low

0.75V—Active-High

PART

-40°C to +85°C

TEMP RANGE

Ordering Information

Transients

PIN-PACKAGE

3 SC70-3

4 SC70-4

Features

Related parts for MAX6832HXRD3+T

MAX6832HXRD3+T Summary of contents

Page 1

... Critical µP and µC Power Monitoring Portable/Battery-Powered Equipment Pin Configurations, Typical Operating Circuit, and Selector Guide appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. and µP Reset Circuits ♦ ...

Page 2

Ultra-Low-Voltage SC70 Voltage Detectors and µP Reset Circuits ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) V ........................................................................-0.3V to +6.0V CC Open-Drain RESET, MR .......................................-0.3V to +6.0V RESET-IN, Push-Pull RESET and RESET ..............................................-0. Input/Output Current (all pins) ...

Page 3

Ultra-Low-Voltage SC70 Voltage Detectors ELECTRICAL CHARACTERISTICS (continued +0.55V to +3.6V MIN PARAMETER SYMBOL Propagation Delay (D0 only) Startup Time (D0 only) MR Input Voltage MR Minimum Input Pulse Width MR Glitch ...

Page 4

Ultra-Low-Voltage SC70 Voltage Detectors and µP Reset Circuits (V = full range and T = -40°C to +85°C, unless otherwise noted. Typical values are SUPPLY CURRENT vs. TEMPERATURE 3. ...

Page 5

Ultra-Low-Voltage SC70 Voltage Detectors PIN MAX6832/ MAX6833 MAX6836 MAX6834 SC70-3 SC70-4 SC70 — 2 — 2 — 2 — — PIN MAX6838/ NAME MAX6839 MAX6840 SC70-4 SC70 RESET- ...

Page 6

Ultra-Low-Voltage SC70 Voltage Detectors and µP Reset Circuits MR (MAX6835/MAX6836/MAX6837 ONLY PULLUP TIMEOUT MAX6832– MAX6837 V = 444mV REF Detailed Description A microprocessor’s (µP’s) reset input starts the µ known state. The MAX6832–MAX6840 assert a ...

Page 7

Ultra-Low-Voltage SC70 Voltage Detectors at RESET-IN allows for relatively large-value resistors to be used, which reduce power consumption. For exam- ple, for a 0.6V monitored trip level 200kΩ, then R1 = 70.3kΩ. Note that the minimum V ...

Page 8

Ultra-Low-Voltage SC70 Voltage Detectors and µP Reset Circuits Using The MAX6834/MAX6837/MAX6840 Open-Drain with Multiple Supplies Generally, the pullup connected to the MAX6834/ MAX6837/MAX6840 will connect to the supply voltage that is being monitored at the IC’s V some systems may ...

Page 9

Ultra-Low-Voltage SC70 Voltage Detectors TOP VIEW GND 1 MAX6832 MAX6833 MAX6834 2 RESET (RESET) SC70 ARE FOR MAX6833 Typical Operating Circuit V IN 3.3V 1.2V DC/DC CONVERTER V CC RESET MAX6834G/F GND _______________________________________________________________________________________ and µP ...

Page 10

Ultra-Low-Voltage SC70 Voltage Detectors and µP Reset Circuits (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 10 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 3L SC70 1 ...

Page 11

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2005 Maxim Integrated Products and µ ...

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