General Description

The MAX6351–MAX6360 microprocessor (µP) supervi-

sors with multiple reset voltages significantly improve sys-

tem reliability and accuracy compared to separate ICs or

discrete components. If any input supply voltage drops

below its associated preset threshold, all reset outputs

are asserted. In addition, the outputs are valid as long as

either input supply voltage remains greater than +1.0V.

All devices in this series have an active-low debounced

manual reset input. In addition, the MAX6358/MAX6359/

MAX6360 offer a watchdog-timer input with a 46.4s start-

up timeout period and a 2.9s timeout period. The

MAX6355/MAX6356/MAX6357 offer an additional voltage

monitor input to monitor a third voltage.

The MAX6351 features two active-low, push-pull reset

The MAX6354/MAX6357/MAX6360 offer an active-low,

All these devices are offered with a wide variety of voltage

threshold levels, as shown in the Voltage Threshold

Levels table. They are available in 5- and 6-pin SOT23

packages and operate over the extended (-40°C to

+85°C) temperature range.

Features

♦ Precision Monitoring of Multiple +1.8V, +2.5V,

+3.0V, +3.3V, and +5V Power-Supply Voltages

♦ Precision Factory-Set Power-Supply

Reset Thresholds

♦ 20µA Supply Current

♦ 100ms min Power-On Reset Pulse Width

♦ Debounced TTL/CMOS-Compatible

Manual-Reset Input

♦ Watchdog Timer

46.4s Startup Timeout

2.9s Normal Timeout

♦ Fully Guaranteed Over Temperature

♦ Power-Supply Transient Immunity

♦ No External Components for Dual-Voltage

Systems

♦ Small 5- and 6-Pin SOT23 Packages

♦ Low Cost

Applications

Computers

Intelligent Instruments

Controllers

Multivoltage Systems

Portable/Battery-Powered

Equipment

Dual/Triple-Voltage

µP Supervisory Circuits

________________________________________________________________ Maxim Integrated Products

1

19-1508; Rev 6; 12/05

*The _ _ are placeholders for the threshold voltage levels of the

devices. Substitute the part number suffix in the Voltage Thres-

hold Levels table for the desired voltage level. All devices are

available in tape-and-reel only. There is a 2500 piece minimum

order increment for the SOT package.

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

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

Ordering Information

PART*

MAX6351_ _UT-T

MAX6352_ _UK-T

MAX6353_ _UK-T

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

TEMP RANGE

PIN-PACKAGE

6 SOT23-6

5 SOT23-5

5 SOT23-5

MAX6354_ _UK-T

MAX6355_ _UT-T

MAX6356_ _UT-T

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

5 SOT23-5

6 SOT23-6

6 SOT23-6

MAX6357_ _UT-T

MAX6358_ _UT-T

MAX6359_ _UT-T

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

6 SOT23-6

6 SOT23-6

6 SOT23-6

MAX6360_ _UT-T

-40°C to +85°C

6 SOT23-6

Note: Standard versions are shown in bold. Sample stock is gen-

erally held on the standard versions only. Contact factory for avail-

ability.

__________Voltage Threshold Levels

Pin Configurations appear at end of data sheet.

Selector Guide appears 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.

PART NO.

SUFFIX

(_ _)

VOLTAGE

THRESHOLD (V)

VOLTAGE

THRESHOLD (V)

LT

4.63

3.08

LS

4.63

2.93

LR

4.63

2.63

MT

4.38

3.08

MS

4.38

2.93

MR

4.38

2.63

TZ

3.08

2.32

TY

3.08

2.19

TW

3.08

1.67

TV

3.08

1.58

SZ

2.93

2.32

SY

2.93

2.19

SW

2.93

1.67

SV

2.93

1.58

UW

2.78

1.67

UV

2.78

1.58

RW

2.63

1.67

RV

2.63

1.58