MAX6800UR44D3-T Maxim Integrated Products, MAX6800UR44D3-T Datasheet

MAX6800UR44D3-T

Manufacturer Part Number

MAX6800UR44D3-T

Description

Supervisory Circuits

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX6801UR44D3T.pdf (7 pages)

Specifications of MAX6800UR44D3-T

Number Of Voltages Monitored

Monitored Voltage

2.85 V to 5 V

Output Type

Active High, Push-Pull

Manual Reset

Not Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Supply Voltage (max)

5.5 V

Supply Voltage (min)

0.7 V

Supply Current (typ)

5 uA

Maximum Power Dissipation

320 mW

Maximum Operating Temperature

+ 125 C

Minimum Operating Temperature

- 40 C

Power Fail Detection

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX6800UR44D3-T

Manufacturer:

MAXIM/美信

Quantity:

20 000

Current page: 1 of 7
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The MAX6800/MAX6801/MAX6802 microprocessor (µP)

supervisory circuits monitor the power supplies in 2.85V

to 5.0V 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 preset

timeout period after V

threshold. The only difference among the three devices

is their output. The MAX6801 (push/pull) and MAX6802

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

MAX6800 (push/pull) has an active-high RESET output.

The MAX6800/MAX6801 are guaranteed to be in the cor-

rect state for V

teed to be in the correct state for V

The reset comparator in these ICs is designed to ignore

fast transients on V

trimmable between 2.63V and 4.80V, in approximately

100mV increments. These devices are available with a

1ms (min), 20ms (min), or 100ms (min) reset pulse

width. Ideal for space-critical applications, the

MAX6800/MAX6801/MAX6802 come packaged in a 3-

pin SOT23. For a lower threshold voltage version, see

the MAX6332/MAX6333/MAX6334.

19-1933 Rev 2; 12/05

Typical Operating Circuit and Pin Configuration 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.

Computers

Controllers

Intelligent Instruments

Critical µP/µC Power Monitoring

Portable/Battery-Powered Equipment

Automotive

down to 0.7V. The MAX6802 is guaran-

________________________________________________________________ Maxim Integrated Products

. Reset thresholds are factory-

General Description

has risen above the reset

supply voltage declines

Applications

down to 1.0V.

♦ Ultra-Low 0.7V Operating Supply Voltage

♦ Low 4.0µA Supply Current

♦ Precision Monitoring of 2.85V to 5.0V Power-

♦ Reset Thresholds Available from 2.63V to 4.80V,

♦ Fully Specified over Temperature

♦ Three Power-On Reset Timeout Periods Available

♦ Low Cost

♦ Three Available Output Structures: Push/Pull

♦ Guaranteed RESET/RESET Valid to V

♦ Power-Supply Transient Immunity

♦ No External Components Required

♦ 3-Pin SOT23 Package

♦ Pin Compatible with MAX809/MAX810,

*These devices are available in factory-set V

olds from 2.63V to 4.80V, 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.

MAX6800UR_ _D_-T

MAX6801UR_ _D_-T

MAX6802UR_ _D_-T

Supply Voltages

in Approximately 100mV Increments

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

RESET, Push/Pull RESET, Open-Drain RESET

(MAX6800/MAX6801)

MAX6326/MAX6327/MAX6328, and

MAX6346/MAX6347/MAX6348

PART*

µP Reset Circuits

3-Pin, Low-Power

-40°C to +125°C

TEMP RANGE

Ordering Information

PIN-PACKAGE

3 SOT23-3

Features

reset thresh-

= 0.7V

Related parts for MAX6800UR44D3-T

MAX6800UR44D3-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. ________________________________________________________________ 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

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, RESET).........................................20mA ...

Page 3

T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 6.5 6.0 5 +5.0V CC 5.0 4 +3.3V CC 4.0 3.5 3.0 -50 - 100 TEMPERATURE (°C) RESET ...

Page 4

Low-Power µP Reset Circuits Applications Information Interfacing to µPs with Bidirectional Since the RESET output on the MAX6802 is open-drain, this device interfaces easily with µPs that have bidirec- tional reset pins, such as the Motorola 68HC11. Connecting the ...

Page 5

Ensuring a Valid Reset Output When V falls below 1V and approaches the minimum CC operating voltage of 0.7V, push/pull-structured reset sinking (or sourcing) capabilities decrease drastically. High-impedance CMOS-logic inputs connected to the RESET pin can drift to indeterminate voltages. ...

Page 6

... Low-Power µP Reset Circuits PART OUTPUT STAGE MAX6800UR26D3-T Push/Pull RESET MAX6800UR29D3-T Push/Pull RESET MAX6800UR31D3-T Push/Pull RESET MAX6800UR44D3-T Push/Pull RESET MAX6800UR46D3-T Push/Pull RESET Push/Pull RESET MAX6801UR26D3-T Push/Pull RESET MAX6801UR29D3-T Push/Pull RESET MAX6801UR31D3-T Push/Pull RESET MAX6801UR44D3-T Push/Pull RESET MAX6801UR46D3-T Open-Drain RESET MAX6802UR26D3-T ...

Page 7

... 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. 7 _____________________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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