Maxim MAX6713MEXS-T10, MAX6713LEXS-T, MAX6713LEXS-T10, MAX6712TEXS-T, MAX6712TEXS-T10 Datasheet

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General Description

The MAX6711/MAX6712/MAX6713 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5.0V, +3.3V, +3.0V, or +2.5V-powered circuits. They also provide a debounced manual reset input.

These circuits assert a reset signal whenever the V

supply voltage declines below a preset threshold or whenever manual reset is asserted. Reset remains asserted for at least 140ms after VCChas risen above the reset threshold or when manual reset is deasserted. Reset thresholds suitable for operation with a variety of supply voltages are available.

The MAX6713 has an open-drain output stage, while the MAX6711/MAX6712 have push-pull outputs. The MAX6713’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The MAX6711/MAX6713 have an active-low reset output, while the MAX6712 has an active-high reset output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCCdown to 1V.

Low supply current makes the MAX6711/MAX6712/ MAX6713 ideal for use in portable equipment. These devices are available in a 4-pin SC70 package.

Applications

Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable/Battery-Powered Equipment Automotive

____________________________Features

♦ Precision Monitoring of 2.5V, 3.0V, 3.3V, and 5.0V

Power-Supply Voltages

♦ Fully Specified Over Temperature ♦ Available in Three Output Configurations

Push-Pull RESET Output (MAX6711) Push-Pull RESET Output (MAX6712) Open-Drain RESET Output (MAX6713)

♦ 140ms min Power-On Reset Pulse Width ♦ Manual Reset Input ♦ 12µA Supply Current ♦ Guaranteed Reset Valid to VCC= +1V ♦ Power-Supply Transient Immunity ♦ No External Components ♦ 4-Pin SC70 Package

MAX6711L/M/R/S/T/Z, MAX6712L/M/R/S/T/Z, MAX6713L/M/R/S/T/Z

4-Pin SC70 Microprocessor Reset Circuits

with Manual Reset Input

________________________________________________________________ Maxim Integrated Products 1

19-1623; Rev 0; 1/00

Note: These parts are offered in 2.5k or 10k reels and must be ordered in 2.5k or 10k increments. Order MAX6711_EXS-T for

2.5k reels and MAX6711_EXS-T10 for 10k reels. Insert the desired suffix letter from the Selector Guide into the blank to complete the part number.

For free samples and the latest literature: www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.

4 SC70-4-40°C to +125°C

MAX6711_EXS-T10

4 SC70-4

PIN-PACKAGETEMP. RANGE

-40°C to +125°C

MAX6711_EXS-T

PART

4 SC70-4-40°C to +125°C

MAX6712_EXS-T10

4 SC70-4-40°C to +125°C

MAX6712_EXS-T

4 SC70-4-40°C to +125°C

MAX6713_EXS-T10

4 SC70-4-40°C to +125°C

MAX6713_EXS-T

Ordering Information

TOP VIEW

RESET (RESET)

GND

MAX6711 MAX6712 MAX6713

SC70-4

( ) ARE FOR MAX6712.

MAX6711 MAX6713

PULL-UP

RESET

RESET INPUT

GND

*MAX6713 ONLY

PUSHBUTTON SWITCH

µP

Pin ConfigurationTypical Operating Circuit

Selector Guide appears at end of data sheet.

MAX6711L/M/R/S/T/Z, MAX6712L/M/R/S/T/Z, MAX6713L/M/R/S/T/Z

4-Pin SC70 Microprocessor Reset Circuits with Manual Reset Input

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= full range, TA= -40°C to +125°C, unless otherwise noted. Typical values are at VCC= +5V for L/M versions, VCC= +3.3V for T/S versions, V

= +3V for R version, VCC= +2.5V for Z version, and TA= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Terminal Voltage (with respect to GND)

VCC........................................................................-0.3V to +6.0V

RESET, RESET (push-pull).........................-0.3V to (V

+ 0.3V)

RESET (open drain)...............................................-0.3V to +6.0V

MR ..............................................................-0.3V to (V

+ 0.3V)

Input Current, V

, MR.......................................................20mA

Output Current, RESET, RESET ..........................................20mA

Rate of Rise, V

............................................................100V/µs

Continuous Power Dissipation (TA= +70°C)

4-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW

Operating Temperature Range .........................-40°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

100 640

TA= +85°C to +125°C

TA= -40°C to +125°C

TA= 0°C to +70°C

TA= +85°C to +125°C

TA= -40°C to +85°C

MAX671_L

CONDITIONS

2.22 2.42

4.50 4.75

4.56 4.63 4.70

Reset Threshold

1.2 5.5

1.0 5.5

VCCRange

12 30

16 35

Supply Current

VCC< 5.5V, MAX671_L/M

VCC< 3.6V, MAX671_R/S/T/Z

UNITSMIN TYP MAXSYMBOLPARAMETER

VCC< 5.5V, MAX671_L/M

MAX671_R

2.59 2.63 2.66TA= +25°C

VCC< 3.6V, MAX671_R/S/T/Z

TA= +25°C

TA= -40°C to +85°C

MAX671_M

4.25 4.50

2.55 2.70TA= -40°C to +85°C

MAX671_Z

2.25 2.38

2.28 2.32 2.35

2.52 2.74TA= +85°C to +125°C

TA= +25°C

TA= -40°C to +85°C

4.31 4.38 4.45

4.44 4.82TA= +85°C to +125°C

TA= +25°C

TA= -40°C to +85°C

MAX671_T

3.04 3.08 3.11

4.20 4.56TA= +85°C to +125°C

TA= +25°C

3.00 3.15TA= -40°C to +85°C

2.95 3.21TA= +85°C to +125°C

MAX671_S

2.81 3.05

2.85 3.00

2.89 2.93 2.96TA= +25°C

TA= -40°C to +85°C

TA= +85°C to +125°C

µA

Reset Threshold Tempco

µs

ppm/°C

140 240 460

TA= -40°C to +85°C

VCC= VTHto (VTH- 100mV)

Reset Active Timeout Period

VCCto Reset Delay (Note 2)

MAX6711L/M/R/S/T/Z, MAX6712L/M/R/S/T/Z, MAX6713L/M/R/S/T/Z

4-Pin SC70 Microprocessor Reset Circuits

with Manual Reset Input

_______________________________________________________________________________________ 3

Note 1: Production testing done at TA= +25°C; limits over temperature guaranteed by design only. Note 2: RESET output for MAX6711/MAX6713; RESET output for MAX6712.

CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER

VCC= VTHmax, I

SINK

= 3.2mA,

MAX6712L/M

VCC= VTHmax, I

SINK

= 1.2mA,

MAX6712R/S/T/Z

VCC> VTHmax, I

SOURCE

= 800µA,

MAX6711L/M

> VTHmax, I

SOURCE

= 500µA,

MAX6711R/S/T/Z

VCC= VTHmin, I

SINK

= 1.2mA,

MAX6711R/S/T/Z, MAX6713R/S/T/Z

VCC= VTHmin, I

SINK

= 3.2mA,

MAX6711L/M, MAX6713L/M

VCC> VTH, RESET deasserted

VCC> 1.0V, I

SINK

= 50µA

1.8V < VCC< VTHmin, I

SOURCE

= 150µA

µA1

RESET Open-Drain Output Leakage Current

0.8 · V

RESET Output Voltage High (MAX6712)

0.4

0.3

RESET Output Voltage Low (MAX6712)

0.8 · V

RESET Output Voltage High (MAX6711)

0.3

RESET Output Voltage Low (MAX6711/MAX6713)

0.4

0.3

0.3 · V

MR Input Threshold

0.7 · V

kΩ10 20

MR Pull-Up Resistance

MR Minimum Pulse Width

µs

ns100

MR Glitch Immunity

200

MR to Reset Delay

ELECTRICAL CHARACTERISTICS (continued)

(VCC= full range, TA= -40°C to +125°C, unless otherwise noted. Typical values are at VCC= +5V for L/M versions, VCC= +3.3V for T/S versions, V

= +3V for R version, VCC= +2.5V for Z version, and TA= +25°C.) (Note 1)

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