General Description

The MAX6332/MAX6333/MAX6334 microprocessor (µP)

supervisory circuits monitor the power supplies in 1.8V

to 3.3V µP and digital systems. They increase circuit

reliability and reduce cost by eliminating external com-

ponents and adjustments.

These devices perform a single function: they assert a

below a preset threshold, keeping it asserted for a pre-

threshold. The only difference among the three devices

is their output. The MAX6333 (push/pull) and MAX6334

(open-drain) have an active-low RESET output, while

the MAX6332 (push/pull) has an active-high RESET out-

put. The MAX6332/MAX6333 are guaranteed to be in

1.0V.

The reset comparator in these ICs is designed to ignore

trimmable between 1.6V and 2.5V, in approximately

100mV increments. There are 15 standard versions

available (2,500 piece minimum-order quantity); con-

tact the factory for availability of nonstandard versions

(10,000 piece minimum-order quantity). For space-criti-

cal applications, the MAX6332/MAX6333/MAX6334

come packaged in a 3-pin SOT23.

Applications

Pentium II™ Computers

Computers

Controllers

Intelligent Instruments

Critical µP/µC Power Monitoring

Portable/Battery-Powered Equipment

Automotive

Features

♦ Ultra-Low 0.7V Operating Supply Voltage

♦ Low 3.3µA Supply Current

♦ Precision Monitoring of 1.8V and 2.5V Power-

Supply Voltages

♦ Reset Thresholds Available from 1.6V to 2.5V,

in Approximately 100mV Increments

♦ Fully Specified over Temperature

♦ Three Power-On Reset Pulse Widths Available

(1ms min, 20ms min, 100ms min)

♦ Low Cost

♦ Three Available Output Structures: Push/Pull

RESET, Push/Pull RESET, Open-Drain RESET

(MAX6332/MAX6333)

♦ Power-Supply Transient Immunity

♦ No External Components

♦ 3-Pin SOT23 Package

♦ Pin Compatible with MAX809/MAX810 and

MAX6326/MAX6327/MAX6328

3-Pin, Ultra-Low-Voltage, Low-Power

µP Reset Circuits

________________________________________________________________ Maxim Integrated Products

1

19-1411; Rev 2; 12/05

PART*

MAX6332UR__D_-T

MAX6333UR__D_-T

MAX6334UR__D_-T

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

TEMP. RANGE

PIN-PACKAGE

3 SOT23-3

3 SOT23-3

3 SOT23-3

Ordering Information

olds from 1.6V to 2.5V, in approximately 0.1V increments.

Choose the desired reset threshold suffix from Table 1 and

insert it in the blanks following “UR” in the part number.

Factory-programmed reset timeout periods are also available.

Insert the number corresponding to the desired nominal reset

timeout period (1 = 1ms min, 2 = 20ms min, 3 = 100ms min) in

the blank following “D” in the part number. There are 15 stan-

dard versions with a required order increment of 2500 pieces.

Sample stock is generally held on the standard versions only

(see Selector Guide). Contact the factory for availability of non-

standard versions (required order increment is 10,000 pieces).

All devices available 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.

Typical Operating Circuit and Pin Configuration appear

at end of data sheet.

Selector Guide appears at end of data sheet.

Pentium II is a trademark of Intel Corp.

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.