MAX6835VXSD0-T Maxim Integrated, MAX6835VXSD0-T Datasheet

MAX6835VXSD0-T

Manufacturer Part Number

MAX6835VXSD0-T

Description

Supervisory Circuits

Manufacturer

Maxim Integrated

Series

MAX6832, MAX6833, MAX6834, MAX6835, MAX6836, MAX6837, MAX6838, MAX6839, MAX6840r

Datasheet

1.MAX6835VXSD0-T.pdf (11 pages)

Specifications of MAX6835VXSD0-T

Number Of Voltages Monitored

Monitored Voltage

1.2 V to 1.8 V

Undervoltage Threshold

1.53 V

Overvoltage Threshold

1.62 V

Output Type

Active Low, Push-Pull

Manual Reset

Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

0.07 ms

Supply Voltage - Max

3.6 V

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Package / Case

SC-70

Chip Enable Signals

Maximum Power Dissipation

245 mW

Minimum Operating Temperature

- 40 C

Power Fail Detection

Supply Current (typ)

16 uA

Supply Voltage - Min

0.55 V

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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

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