MAX6875ETJ datasheet(1/40 Pages) MAXIM

Part #	MAX6875ETJ

Description	EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors

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Manufacturer	MAXIM [Maxim Integrated Products]

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General Description

The MAX6874/MAX6875 EEPROM-configurable, multi-

voltage supply sequencers/supervisors monitor several

voltage detector inputs and general-purpose logic

inputs, and provide programmable open-drain outputs

for highly configurable power-supply sequencing appli-

cations. The MAX6874 provides six voltage monitor

inputs, four general-purpose inputs, and eight program-

mable open-drain outputs. The MAX6875 provides four

voltage monitor inputs, three general-purpose inputs,

and five programmable open-drain outputs. Manual reset

and margin disable inputs provide additional flexibility.

All voltage detectors offer configurable thresholds for

undervoltage detection. One high-voltage input (IN1)

provides detector threshold voltages from +2.5V to

+13.2V in 50mV increments, or from +1.25V to +7.625V

in 25mV increments. A second positive input (IN2) pro-

vides detector threshold voltages from +2.5V to +5.5V

in 50mV increments, or from +1.25V to +3.05V in 25mV

increments. Positive inputs (IN3–IN6) provide detector

threshold voltages from +1V to +5.5V in 20mV incre-

ments, or from +0.5V to +3.05V in 10mV increments.

Programmable output stages control power-supply

sequencing or system resets/interrupts. Program the

open-drain outputs as active-high or active-low.

Programmable timing delay blocks configure each output

to wait between 25µs and 1600ms before deasserting.

An SMBus™/I2C-compatible serial data interface pro-

grams and communicates with the configuration EEP-

ROM, the configuration registers, and the internal 4kb

user EEPROM of the MAX6874/MAX6875.

The MAX6874/MAX6875 are available in a 7mm x 7mm

x 0.8mm 32-pin thin QFN package and operate over

the extended temperature range (-40°C to +85°C).

Applications

Telecommunications/Central Office Systems

Networking Systems

Servers/Workstations

Base Stations

Storage Equipment

Multimicroprocessor/Voltage Systems

Features

♦ Six (MAX6874) or Four (MAX6875) Configurable

Input Voltage Detectors

One High Voltage Input (+1.25V to +7.625V or

+2.5V to +13.2V Thresholds)

One Voltage Input (+1.25V to +3.05V or

+2.5V to +5.5V)

Four (MAX6874) or Two (MAX6875) Positive

Voltage Inputs (+0.5V to +3.05V or +1V

to +5.5V)

♦ Four (MAX6874) or Three (MAX6875) General-

Purpose Logic Inputs

♦ Two Configurable Watchdog Timers

♦ Eight (MAX6874) or Five (MAX6875) Programmable

Open-Drain Outputs

Active-High or Active-Low

Timing Delays from 25µs to 1600ms

♦ Margining Disable and Manual Reset Controls

♦ 4kb Internal User EEPROM

Endurance: 100,000 Erase/Write Cycles

Data Retention: 10 Years

♦ I2C/SMBus-Compatible Serial Configuration/

Communication Interface

♦ ±1% Threshold Accuracy

EEPROM-Programmable, Hex/Quad,

Power-Supply Sequencers/Supervisors

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-3438; Rev 0; 10/04

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.

EVALUATION

KIT

AVAILABLE

Pin Configurations, Typical Operating Circuit, and Selector

Guide appear at end of data sheet.

PART

TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX6874 ETJ

-40°C to +85°C

32 Thin QFN

T3277-2

MAX6875 ETJ

-40°C to +85°C

32 Thin QFN

T3277-2

SMBus is a trademark of Intel Corp.

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