MAX6328UR31+T Maxim Integrated Products, MAX6328UR31+T Datasheet

MAX6328UR31+T

Manufacturer Part Number

MAX6328UR31+T

Description

IC MPU/RESET CIRC 3.08V SOT23-3

Manufacturer

Maxim Integrated Products

Type

Simple Reset/Power-On Resetr

Datasheet

1.MAX6327XR29T.pdf (8 pages)

Specifications of MAX6328UR31+T

Number Of Voltages Monitored

Output

Open Drain or Open Collector

Reset

Active Low

Reset Timeout

100 ms Minimum

Voltage - Threshold

3.08V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

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

Monitored Voltage

2.5 V, 3 V, 3.3 V, 5 V

Undervoltage Threshold

3.034 V

Overvoltage Threshold

3.126 V

Output Type

Active Low, Open Drain

Manual Reset

Not Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

280 ms

Supply Voltage (max)

5.5 V

Supply Voltage (min)

1.2 V

Supply Current (typ)

0.5 uA

Maximum Power Dissipation

320 mW

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Power Fail Detection

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

MAX6328UR31+T
MAX6328UR31+TTR

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The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/

MAX6348 microprocessor (µP) supervisory circuits moni-

tor the power supplies in µP and digital systems. These

devices provide excellent circuit reliability and low cost

by eliminating external components and adjustments

when used with 2.5V, 3V, 3.3V, and 5V powered circuits.

These circuits perform a single function: they assert a

reset signal whenever the V

below a preset threshold, keeping it asserted for at least

100ms after V

The only difference between the devices is their output.

The MAX6326/MAX6346 (push-pull) and MAX6328/

MAX6348 (open-drain) have an active-low reset output.

The MAX6327/MAX6347 have an active-high push-pull

reset output. All of these parts are guaranteed to be in

the correct state for V

tor is designed to ignore fast transients on V

thresholds are factory-trimmable between 2.2V and

4.63V, in approximately 100mV increments. Twenty-one

standard versions are available. Contact the factory for

availability of nonstandard versions.

Ultra-low supply currents (1µA max for the MAX6326/

MAX6327/MAX6328) make these parts ideal for use in

portable equipment. All six devices are available in

space-saving SOT23 and SC70 packages.

19-1294; Rev 4; 12/05

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.

Computers

Controllers

Critical µP and µC

Power Monitoring

TOP VIEW

( ) ARE FOR THE MAX6327/MAX6347.

(RESET) RESET

GND

________________________________________________________________ Maxim Integrated Products

has risen above the reset threshold.

General Description

SOT23-3/SC70-3

down to 1V. The reset compara-

Pin Configuration

Intelligent Instruments

Automotive

Portable/Battery-Powered

Equipment

MAX6326

MAX6327

MAX6328

MAX6346

MAX6347

MAX6348

supply voltage declines

3-Pin, Ultra-Low-Power SC70/SOT

Applications

. Reset

♦ Ultra-Low 1µA (max) Supply Current

♦ Precision Monitoring of 2.5V, 3V, 3.3V, and 5V

♦ Reset Thresholds Available from 2.2V to 4.63V

♦ Fully Specified Over Temperature

♦ 100ms (min) Power-On Reset Pulse Width

♦ Low Cost

♦ Available in Three Versions: Push-Pull RESET,

♦ Power-Supply Transient Immunity

♦ No External Components

♦ 3-Pin SC70/SOT23 Packages

♦ Pin Compatible with MAX803/MAX809/MAX810

Selector Guide appears at end of data sheet.

†The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/

MAX6348 are available in factory-set V

2.2V to 4.63V, in approximately 0.1V increments. Choose the

desired reset-threshold suffix from Table 1 and insert it in the

blank spaces following “R.” There are 21 standard versions with

a required order increment of 2500 pieces. Sample stock is gen-

erally held on the standard versions only (see the Selector

Guide). Required order increment is 10,000 pieces for nonstan-

dard versions (Table 2). Contact factory for availability. 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.

MAX6326XR_ _-T

MAX6326UR_ _-T

MAX6327XR_ _-T

MAX6327UR_ _-T

MAX6328XR_ _-T

MAX6328UR_ _-T

MAX6346XR_ _-T

MAX6346UR_ _-T

MAX6347XR_ _-T

MAX6347UR_ _-T

MAX6348XR_ _-T

MAX6348UR_ _-T

(MAX6326/MAX6327/MAX6328)

Power-Supply Voltages

Push-Pull RESET, and Open-Drain RESET

PART

†

µP Reset Circuits

-40°C to +85°C

TEMP. RANGE

Ordering Information

reset thresholds from

3 SC70-3

3 SOT23-3

3 SC70-3

3 SOT23-3

3 SC70-3

3 SOT23-3

3 SC70-3

3 SOT23-3

3 SC70-3

3 SOT23-3

3 SC70-3

3 SOT23-3

PIN-PACKAGE

Features

Related parts for MAX6328UR31+T

MAX6328UR31+T Summary of contents

Page 1

... MAX6347 MAX6348 (RESET) RESET 2 SOT23-3/SC70 ARE FOR THE MAX6327/MAX6347. ________________________________________________________________ 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. 3-Pin, Ultra-Low-Power SC70/SOT ♦ Ultra-Low 1µA (max) Supply Current (MAX6326/MAX6327/MAX6328) ♦ Precision Monitoring of 2.5V, 3V, 3.3V, and 5V Power-Supply Voltages ♦ ...

Page 2

Ultra-Low-Power SC70/SOT µP Reset Circuits ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) V ...........................................................................-0.3V to +6V CC RESET, RESET (push-pull) .........................-0. RESET (open drain)..................................................-0.3V to +6V Input Current (V ) .............................................................20mA CC Output Current (RESET, ...

Page 3

Operating Characteristics (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 1.0 0.9 0 0.7 0 3.3V CC 0.5 0.4 0.3 0 -40 -20 0 ...

Page 4

Ultra-Low-Power SC70/SOT µP Reset Circuits ____________ Applications Information Interfacing to µPs with Bidirectional Reset Pins Since the RESET output on the MAX6328/MAX6348 is open drain, these devices interface easily with micro- processors (µPs) that have bidirectional reset pins, such ...

Page 5

Table 1. Factory-Trimmed Reset Thresholds PART SUFFIX MIN MAX634_ _R 39 3.841 MAX634_ _R 40 3.940 MAX634_ _R 41 4.038 MAX634_ _R 42 4.137 MAX634_ _R 43 4.235 MAX634_ _R 44 4.314 MAX634_ _R 45 4.432 MAX634_ _R 46 4.560 ...

Page 6

Ultra-Low-Power SC70/SOT µP Reset Circuits Table 2. Device Marking Codes and Minimum Order Increments (continued) TOP MARK PART SOT23 SC70 MAX6348_R46-T FZCK ACN MAX6348_R45-T FZCJ – MAX6348_R44-T FZCI ACM MAX6348_R43-T FZCH – MAX6348_R42-T FZCG – MAX6348_R41-T FZCF – MAX6348_R40-T ...

Page 7

For the latest package outline information www.maxim-ic.com/packages.) _______________________________________________________________________________________ 3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits Package Information 7 ...

Page 8

... 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. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products ...

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