MAX6334UR18D2+T Maxim Integrated Products, MAX6334UR18D2+T Datasheet

MAX6334UR18D2+T

Manufacturer Part Number

MAX6334UR18D2+T

Description

IC MPU/RESET CIRC 1.80V SOT23-3

Manufacturer

Maxim Integrated Products

Type

Simple Reset/Power-On Resetr

Datasheet

1.MAX6332UR16D3T.pdf (6 pages)

Specifications of MAX6334UR18D2+T

Number Of Voltages Monitored

Output

Open Drain or Open Collector

Reset

Active Low

Reset Timeout

20 ms Minimum

Voltage - Threshold

1.8V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

SOT-23-3, TO-236-3, Micro3™, SSD3, SST3

Monitored Voltage

1.8 V, 2.5 V

Undervoltage Threshold

1.77 V

Overvoltage Threshold

1.83 V

Output Type

Active Low, Open Drain

Manual Reset

Not Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

40 ms

Supply Voltage (max)

5.5 V

Supply Voltage (min)

1 V

Supply Current (typ)

3.3 uA

Maximum Power Dissipation

320 mW

Maximum Operating Temperature

+ 125 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Power Fail Detection

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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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

reset signal whenever the V

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

set timeout period after V

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

the correct state for V

guaranteed to be in the correct state for V

1.0V.

The reset comparator in these ICs is designed to ignore

fast transients on V

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.

19-1411; Rev 2; 12/05

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.

Pentium II™ Computers

Computers

Controllers

Intelligent Instruments

Critical µP/µC Power Monitoring

Portable/Battery-Powered Equipment

Automotive

________________________________________________________________ Maxim Integrated Products

. Reset thresholds are factory-

General Description

down to 0.7V. The MAX6334 is

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

has risen above the reset

supply voltage declines

Applications

down to

♦ Ultra-Low 0.7V Operating Supply Voltage

♦ Low 3.3µA Supply Current

♦ Precision Monitoring of 1.8V and 2.5V Power-

♦ Reset Thresholds Available from 1.6V to 2.5V,

♦ Fully Specified over Temperature

♦ Three Power-On Reset Pulse Widths Available

♦ Low Cost

♦ Three Available Output Structures: Push/Pull

♦ Guaranteed RESET/RESET Valid to V

♦ Power-Supply Transient Immunity

♦ No External Components

♦ 3-Pin SOT23 Package

♦ Pin Compatible with MAX809/MAX810 and

* These devices are available in factory-set V

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.

MAX6332UR__D_-T

MAX6333UR__D_-T

MAX6334UR__D_-T

Supply Voltages

in Approximately 100mV Increments

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

RESET, Push/Pull RESET, Open-Drain RESET

(MAX6332/MAX6333)

MAX6326/MAX6327/MAX6328

PART*

µP Reset Circuits

TEMP. RANGE

-40°C to +125°C

Ordering Information

PIN-PACKAGE

3 SOT23-3

Features

reset thresh-

= 0.7V

Related parts for MAX6334UR18D2+T

MAX6334UR18D2+T Summary of contents

Page 1

... Typical Operating Circuit and Pin Configuration appear at end of data sheet. Selector Guide appears at end of data sheet. Pentium trademark of Intel Corp. ________________________________________________________________ Maxim Integrated Products 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. ♦ Ultra-Low 0.7V Operating Supply Voltage ♦ ...

Page 2

Ultra-Low-Voltage, Low-Power µP Reset Circuits ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) V ......................................................................-0.3V to +6V CC Push/Pull RESET, RESET .......................-0. Open-Drain RESET ..............................................-0.3V to +6V Input Current (V ) .............................................................20mA CC Output Current (RESET, ...

Page 3

Ultra-Low-Voltage, Low-Power (Reset not asserted +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 4.0 3.8 3.6 3.4 3 2. 1.8V 2.8 CC 2.6 2.4 2.2 RESET NOT ASSERTED 2.0 -60 ...

Page 4

Ultra-Low-Voltage, Low-Power µP Reset Circuits ______________Applications Information Interfacing to µPs with Bidirectional Since the RESET output on the MAX6334 is open-drain, this device interfaces easily with µPs that have bidirec- tional reset pins, such as the Motorola 68HC11. Connecting ...

Page 5

Ultra-Low-Voltage, Low-Power Pin Configuration TOP VIEW 1 GND MAX6332 MAX6333 MAX6334 2 RESET (RESET) SOT23 ARE FOR MAX6332 PART OUTPUT STAGE MAX6332UR23D3-T Push/Pull RESET MAX6332UR22D3-T Push/Pull RESET MAX6332UR20D3-T Push/Pull RESET MAX6332UR18D3-T Push/Pull RESET MAX6332UR16D3-T Push/Pull RESET Push/Pull ...

Page 6

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc ...

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