General Description

The MAX16000–MAX16007 are low-voltage, quad-/hex-/

octal-voltage µP supervisors in small thin QFN and TSSOP

packages. These devices provide supervisory functions for

complex multivoltage systems. The MAX16000/

MAX16001/MAX16002 monitor four voltages, the

MAX16003/MAX16004/MAX16005 monitor six voltages,

and the MAX16006/MAX16007 monitor eight voltages.

The MAX16000/MAX16001/MAX16003/MAX16004/

MAX16006 offer independent outputs for each moni-

tored voltage. The MAX16001/MAX16002/MAX16004–

MAX16007 offer a reset output that asserts whenever

any of the monitored voltages fall below their respective

thresholds or the manual reset input is asserted. The

reset output remains asserted for the reset timeout after

all voltages are above their respective thresholds and

the manual reset input is deasserted. The minimum

reset timeout is internally set to 140ms or can be adjust-

ed with an external capacitor.

All open-drain outputs have internal 30µA pullups that

eliminate the need for external pullup resistors.

However, each output can be driven with an external

voltage up to 5.5V. Other features offered include a

manual reset input, a tolerance pin for selecting 5% or

10% input thresholds, and a margin enable function for

deasserting the outputs during margin testing.

The MAX16001/MAX16002/MAX16004–MAX16007 offer

a watchdog timer that asserts RESET or an indepen-

dent watchdog output (MAX16005) when the watchdog

timeout period (1.6s typ) is exceeded. The watchdog

timer can be disabled by floating the input.

These devices are offered in 12-, 16-, 20-, and 24-lead

thin QFN and 16-lead TSSOP packages. These are fully

specified from -40

°C to +125°C.

Applications

Storage Equipment

Servers

Networking/Telecommunication Equipment

Multivoltage ASICs

Features

o Fixed Thresholds for 5V, 3.3V, 3V, 2.5V, 1.8V,

1.5V, 1.2V, and 0.9V Systems

o Adjustable Thresholds Monitor Voltages Down to

0.4V

o Open-Drain Outputs with Internal Pullups Reduce

the Number of External Components

o Fixed 140ms (min) or Capacitor-Adjustable Reset

Timeout

o Manual Reset, Margin Enable, and Tolerance

Select Inputs

o Watchdog Timer

1.6s (typ) Timeout Period

54s Startup Delay After Reset (Except MAX16005)

o Independent Watchdog Output (MAX16005)

o RESET Output Indicates All Voltages Present

o Independent Voltage Monitors

o Small (4mm x 4mm) Thin QFN Package

o TSSOP (5mm x 4.4mm) Package (MAX16005)

Low-Voltage, Quad-/Hex-/Octal-Voltage

µP Supervisors

________________________________________________________________

Maxim Integrated Products

1

MAX16005

GND

µP

TOL

SRT

MR

IN1

MARGIN

RESET

WDI

WDO

RST

I/O

NMI

IN2

IN3

IN4

IN5

IN6

Ordering Information

Typical Operating Circuit

19-3870; Rev 3; 12/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Note: The “_” is a placeholder for the input voltage threshold.

See Table 1.

+

Denotes lead(Pb)-free/RoHS-compliant package.

For tape-and-reel, add a “T” after the “+.” Tape-and-reel are

offered in 2.5k increments.

*

EP = Exposed pad.

Ordering Information continued at end of data sheet.

PART

TEMP RANGE

PIN-PACKAGE

MAX16000_TC+

-40

°C to +125°C

12 TQFN-EP*

Selector Guide appears at end of data sheet.