MAX6413UK48+ - Maxim Integrated Products, Inc.

General Description

The MAX6412–MAX6420 low-power microprocessor

supervisor circuits monitor system voltages from 1.6V to

5V. These devices are designed to assert a reset signal

whenever the VCC supply voltage or RESET IN falls below

its reset threshold or the manual reset input is asserted.

The reset output remains asserted for the reset timeout

period after VCC and RESET IN rise above the reset

threshold and the manual reset input is deasserted. The

reset timeout is externally set by a capacitor to provide

more flexibility.

The MAX6412/MAX6413/MAX6414 feature fixed thresholds

from 1.575V to 5V in approximately 100mV increments and

a manual reset input. The MAX6415/MAX6416/MAX6417

are offered with an adjustable reset input that can monitor

voltages down to 1.26V and the MAX6418/MAX6419/

MAX6420 are offered with one fixed input and one

adjustable input to monitor dual-voltage systems.

The MAX6412/MAX6415/MAX6418 have an active-low,

push-pull reset output. The MAX6413/MAX6416/

MAX6419 have an active-high, push-pull reset output

and the MAX6414/MAX6417/MAX6420 have an active-

low, open-drain reset output. All of these devices are

offered in a SOT23-5 package and are fully specified

from -40°C to +125°C.

Applications

Automotive

Medical Equipment

Intelligent Instruments

Portable Equipment

Battery-Powered Computers/Controllers

Embedded Controllers

Critical µP Monitoring

Set-Top Boxes

Computers

Features

♦Monitor System Voltages from 1.6V to 5V

♦Capacitor-Adjustable Reset Timeout Period

♦Manual Reset Input (MAX6412/MAX6413/MAX6414)

♦Adjustable Reset Input Option

(MAX6415–MAX6420)

♦Dual-Voltage Monitoring

(MAX6418/MAX6419/MAX6420)

♦Low Quiescent Current (1.7µA, typ)

♦3 RESET Output Options

Push-Pull RESET

Open-Drain RESET

♦Guaranteed Reset Valid to VCC = 1V

♦Power-Supply Transient Immunity

♦Small SOT23-5 Packages

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

GND

SRT

15VCC

MAX6412–

MAX6420

SOT23-5

TOP VIEW

RESET/RESET

RESET IN (MR)

( ) FOR THE MAX6412/MAX6413/MAX6414.

Pin Configuration

19-2336; Rev 2; 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.

Typical Operating Circuit appears at end of data sheet.

Selector Guide appears at end of data sheet.

PART TEMP RANGE PIN-PACKAGE

MAX6412UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6413UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6414UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6415UK-T

-40°C to +125°C

5 SOT23-5

MAX6416UK-T

-40°C to +125°C

5 SOT23-5

MAX6417UK-T

-40°C to +125°C

5 SOT23-5

MAX6418UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6419UK_ _-T

-40°C to +125°C

5 SOT23-5

MAX6420UK_ _-T

-40°C to +125°C

5 SOT23-5

Note: The MAX6412/MAX6413/MAX6414 and MAX6418/

MAX6419/MAX6420 are available with factory-set VCC reset

thresholds from 1.575V to 5.0V in approximately 0.1V incre-

ments. Insert the desired nominal reset threshold suffix (from

Table 1) into the blanks following the letters UK. There are 33

standard versions with a required order increment of 2500

pieces. Sample stock is generally held on standard versions

only (see Standard Versions Table). Required order increment is

10,000 pieces for nonstandard versions. Contact factory for

availability. All devices are 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.

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

2_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = 1V to 5.5V, TA= TMIN to TMAX, unless otherwise specified. Typical values are at VCC = 5V 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.

All Voltages Referenced to GND

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

SRT, MR, RESET IN....................................-0.3V to (VCC + 0.3V)

RESET, RESET (Push-Pull) .........................-0.3V to (VCC + 0.3V)

RESET (Open-Drain) .............................................-0.3V to +6.0V

Input Current (All Pins) .....................................................±20mA

Output Current (RESET, RESET) ......................................±20mA

Continuous Power Dissipation (TA= +70°C)

5-Pin SOT23-5 (derate 7.1mW/°C above +70°C) ........571mW

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

Junction Temperature......................................................+150°C

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

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range VCC 1.0 5.5 V

VCC ≤ 5.0V

2.7

4.5

VCC ≤ 3.3V 2 3.5Supply Current ICC

VCC ≤ 2.0V 1.7 2.5

µA

TA = +25°C VTH -

1.5%

VTH +

1.5%

TA = 0°C to +125°C VTH -

2.5%

VTH +

2.5%

VCC Reset Threshold Accuracy VTH

TA = -40°C to 0°C VTH -

3.5%

VTH +

3.5%

Hysteresis

VHYST 3 x VTH

VCC to Reset Delay tRD VCC falling at 1mV/µs

100

µs

CSRT = 1500pF

3.35 4.375 5.40

Reset Timeout Period tRP CSRT = 0

0.275

VSRT Ramp Current

IRAMP

VSRT = 0 to 0.65V; VCC = 1.6V to 5V

240

VSRT Ramp Threshold

VTH-RAMP

VCC = 1.6V to 5V (VRAMP rising)

0.65

RAMP Threshold Hysteresis VRAMP falling threshold 33 mV

VCC ≥ 1.0V, ISINK = 50µA 0.3

VCC ≥ 2.7V, ISINK = 1.2mA 0.3

RESET Output Voltage LOW VOL

VCC ≥ 4.5V, ISINK = 3.2mA 0.4

VCC ≥ 1.8V, ISOURCE = 200µA

0.8 x VCC

VCC ≥ 2.25V, ISOURCE = 500µA

0.8 x VCC

RESET Output Voltage HIGH,

(Push-Pull) VOH

VCC ≥ 4.5V, ISOURCE = 800µA

0.8 x VCC

RESET Output Leakage Current,

(Open-Drain) ILKG VCC > VTH, reset not asserted 1.0 µA

VCC ≥ 1.0V, ISOURCE = 1µA

0.8 x VCC

VCC ≥ 1.8V, ISOURCE = 150µA

0.8 x VCC

VCC ≥ 2.7V, ISOURCE = 500µA

0.8 x VCC

RESET Output Voltage HIGH VOH

VCC ≥ 4.5V, ISOURCE = 800µA

0.8 x VCC

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC = 1V to 5.5V, TA= TMIN to TMAX, unless otherwise specified. Typical values are at VCC = 5V and TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VCC ≥ 1.8V, ISINK = 500µA 0.3

VCC ≥ 2.7V, ISINK = 1.2mA 0.3

RESET Output Voltage LOW VOL

VCC ≥ 4.5V, ISINK = 3.2mA 0.4

RESET IN Leakage Current 10 nA

RESET IN Threshold VRST VRST falling, VCC = 1.6V to 5.0V

1.212 1.263 1.313

RESET IN Hysteresis 25 mV

VIL 0.8

VIH

VCC > 4.0V 2.4

VIL

0.3 x VCC

MR Input

VIH

VCC < 4.0V

0.7 x VCC

MR Minimum Pulse Width 1µs

MR Glitch Rejection 75 ns

MR to RESET Delay 50 µs

MR Pullup Resistance Pull up to VCC 12 20 28 kΩ

Note 1: Devices production tested at +25°C. Over temperature limits are guaranteed by design.

Typical Operating Characteristics

(VCC = 5V, CSRT = 1500pF, TA = +25°C, unless otherwise noted.)

0312 456

SUPPLY CURRENT vs.

SUPPLY VOLTAGE

MAX6412-20 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

TA = +125°C

TA = +25°C

TA = -40°C

1.0

0.5

2.0

1.5

3.0

2.5

3.5

-50 0 25-25 50 75 100 125

SUPPLY CURRENT vs.

TEMPERATURE

MAX6412-20 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

VCC = 5V

VCC = 3.3V

VCC = 1.8V

VCC = 1V

0.1

100

1000

10,000

0.001 0.10.01 1 10 100 1000

RESET TIMEOUT PERIOD vs. CSRT

MAX6412-20 toc03

CSRT (nF)

RESET TIMEOUT PERIOD (ms)

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

4_______________________________________________________________________________________

4.05

4.10

4.20

4.15

4.25

4.30

-50 0-25 25 50 75 100 125

RESET TIMEOUT PERIOD

vs. TEMPERATURE

MAX6412-20 toc04

TEMPERATURE (°C)

RESET TIMEOUT PERIOD (ms)

CSRT = 1500pF

RESET TIMEOUT PERIOD

vs. TEMPERATURE

MAX6412-20 toc05

200

250

350

300

500

550

450

400

600

RESET TIMEOUT PERIOD (µs)

-50 0 25-25 50 75 100 125

TEMPERATURE (°C)

CSRT = 0

1.250

1.260

1.255

1.270

1.265

1.275

1.280

-50 25 50-25 0 75 100 125

RESET IN THRESHOLD VOLTAGE

vs. TEMPERATURE

MAX6412-20 toc06

TEMPERATURE (°C)

RESET IN THRESHOLD VOLTAGE (V)

100

150

125

175

0400200 600 800 1000

MAXIMUM TRANSIENT DURATION

vs. RESET THRESHOLD OVERDRIVE

MAX6412-20 toc07

RESET THRESHOLD OVERDRIVE (mV)

TRANSIENT DURATION (µs)

RESET OCCURS

ABOVE THE CURVE

VTH = 3.0V

Typical Operating Characteristics (continued)

(VCC = 5V, CSRT = 1500pF, TA = +25°C, unless otherwise noted.)

Detailed Description

The MAX6412–MAX6420 low-power microprocessor

(µP) supervisory circuits provide maximum adjustability

for supply-voltage monitoring and reset functionality. In

addition, the MAX6412–MAX6420 reset timeout period

is adjustable using an external capacitor.

The MAX6412/MAX6413/MAX6414 have factory-

trimmed reset threshold voltages in approximately

100mV increments from 1.575V to 5.0V with a manual

reset input. The MAX6415/MAX6416/MAX6417 contain

a reset threshold that can be adjusted to any voltage

above 1.26V using external resistors. The MAX6418/

MAX6419/MAX6420 offer both a factory-trimmed reset

threshold and an adjustable reset threshold input for

dual-voltage monitoring.

A reset signal is asserted when VCC and/or RESET IN

falls below the preset values or when MR is asserted.

The reset remains asserted for an externally pro-

grammed interval after VCC and/or RESET IN has risen

above the reset threshold or MR is deasserted.

Reset Output

The reset output is typically connected to the reset

input of a µP. A µP’s reset input starts or restarts the µP

in a known state. The MAX6412–MAX6420 µP supervi-

sory circuits provide the reset logic to prevent code-

execution errors during power-up, power-down, and

brownout conditions (see Typical Operating Circuit).

For the MAX6413, MAX6416, and MAX6419, RESET

changes from low to high whenever VCC or RESET IN

drops below the reset threshold voltages. Once RESET

IN and VCC exceed their respective reset threshold volt-

age(s), RESET remains high for the reset timeout period,

then goes low.

On power-up, once VCC reaches 1V, RESET is guaran-

teed to be a logic high. For applications requiring valid

reset logic when VCC is less than 1V, see the section

Ensuring a Valid RESET/

RESET

Output Down to VCC = 0.

The active-low RESET output of the remaining supervi-

sors is the inverse of the MAX6413, MAX6416, and

MAX6419 active-high RESET output and is guaranteed

valid for VCC ≥1V.

Reset Threshold

The MAX6415–MAX6420 monitor the voltage on RESET

IN with an external resistor voltage-divider (Figure 1).

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

_______________________________________________________________________________________ 5

Pin Description

MAX6412/

MAX6413/

MAX6414

MAX6415/

MAX6416/

MAX6417

MAX6418/

MAX6419/

MAX6420

NAME

FUNCTION

RESET

RESET changes from high to low whenever VCC or RESET IN drops below

the selected reset threshold voltage (VTH or VRESET IN, respectively) or

manual reset is pulled low. RESET remains low for the reset timeout period

after all reset conditions are deasserted and then goes high.

111

RESET

RESET changes from low to high whenever the VCC or RESET IN drops

below the selected reset threshold voltage (VTH or VRESET IN) or manual

reset is pulled low. RESET remains high for the reset timeout period after all

reset conditions are deasserted and then goes low.

222GND Ground

—3 3

RESET

Reset Input. High-impedance input to the adjustable reset comparator.

Connect RESET IN to the center point of an external resistor-divider

network to set the threshold of the externally monitored voltage. See Reset

Threshold section.

3——MR Manual Reset Input. Pull this pin low to manually reset the device. Reset

remains asserted for the reset timeout period after MR is released.

444SRT

Set Reset Timeout Input. Connect a capacitor between SRT and ground to

set the timeout period. Determine the period as follows:

tRP = (2.73 x 106) ✕ CSRT + 275µs with tRP in seconds and CSRT in Farads.

555V

CC Supply Voltage and Input for Fixed-Threshold VCC Monitor

MAX6412–MAX6420

Use the following formula to calculate the externally

monitored voltage (VMON_TH):

VMON_TH = VRST ✕(R1 + R2)/R2

where VMON_TH is the desired reset threshold voltage

and VRST is the reset input threshold (1.26V). Resistors

R1 and R2 can have very high values to minimize cur-

rent consumption due to low leakage currents. Set R2

to some conveniently high value (1MΩ, for example)

and calculate R1 based on the desired monitored volt-

age, using the following formula:

R1 = R2 x (VMON_TH/VRST - 1) (Ω)

Manual Reset Input

(MAX6412/MAX6413/MAX6414)

Many µP based products require manual reset capabil-

ity, allowing the operator, a technician, or external logic

circuitry to initiate a reset. A logic low on MR asserts

reset. Reset remains asserted while MR is low and for

the reset timeout period after MR returns high.

The MR has an internal 20kΩpullup resistor so it can

be left open if not used. Connect a normally open

momentary switch from MR to ground to create a man-

ual reset function (external debounce circuitry is not

required for long reset timeout periods).

A manual reset option can easily be implemented with the

MAX6415–MAX6420 by connecting a normally open

momentary switch in parallel with R2 (Figure 2). When the

switch is closed, the voltage on RESET IN goes to zero,

initiating a reset. Similar to the MAX6412/MAX6413/

MAX6414 manual reset, reset remains asserted while the

switch is closed and for the reset timeout period after the

switch is opened.

Monitoring Voltages Other than VCC

(MAX6415/MAX6416/MAX6417)

The MAX6415/MAX6416/MAX6417 contain an adjustable

reset threshold input. These devices can be used to

monitor voltages other than VCC. Calculate VMON_TH as

shown in the Reset Threshold section. (See Figure 3.)

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

6_______________________________________________________________________________________

MAX6415

MAX6416

MAX6417

SRT

GND

RESET IN VCC

VMON_TH

VMON_TH = 1.26 x (R1 + R2) / R2

Figure 1. Calculating the Monitored Threshold Voltage (VMON_TH)

MAX6415–

MAX6420

SRT

GND

RESET IN VCC

VCC

Figure 2. Adding an External Manual Reset Function to the

MAX6415–MAX6420

MAX6415

MAX6416

MAX6417

SRT

GND

RESET IN VCC

VCC

VMON_TH

Figure 3. Monitoring External Voltages

Dual-Voltage Monitoring

(MAX6418/MAX6419/MAX6420)

The MAX6418/MAX6419/MAX6420 contain both facto-

ry-trimmed threshold voltages and an adjustable reset

threshold input, allowing the monitoring of two voltages,

VCC and VMON_TH (see Figure 4). Reset is asserted

when either of the voltages falls below its respective

threshold voltage.

Application Information

Selecting a Reset Capacitor

The reset timeout period is adjustable to accommodate

a variety of µP applications. Adjust the reset timeout

period (tRP) by connecting a capacitor (CSRT) between

SRT and ground. Calculate the reset timeout capacitor

as follows:

CSRT = (tRP - 275µs) / (2.73 ✕106)

where tRP is in seconds and CSRT is in Farads

The reset delay time is set by a current/capacitor-con-

trolled ramp compared to an internal 0.65V reference.

An internal 240nA ramp current source charges the

external capacitor. The charge to the capacitor is

cleared when a reset condition is detected. Once the

reset condition is removed, the voltage on the capacitor

ramps according to the formula: dV/dt = I/C. The CSRT

capacitor must ramp to 0.65V to deassert the reset.

CSRT must be a low-leakage (<10nA) type capacitor,

ceramic is recommended.

Operating as a Voltage Detector

The MAX6412–MAX6420 can be operated in a voltage

detector mode by floating the SRT pin. The reset delay

times for VCC rising above or falling below the threshold

are not significantly different. The reset output is

deasserted smoothly without false pulses.

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

_______________________________________________________________________________________ 7

RESET

CIRCUITRY

LASER-TRIMMED

RESISTORS

VCC

1.26V

RESET IN

GND

SRT

CSRT

(RESET)

RESET

VMON_TH

MAX6418

MAX6419

MAX6420

ONLY

µP

Figure 4. MAX6418/MAX6419/MAX6420 Monitoring Two Voltages

MAX6412–MAX6420

Interfacing to Other Voltages for Logic

Compatibility

The open-drain outputs of the MAX6414/MAX6417/

MAX6420 can be used to interface to µPs with other

logic levels. As shown in Figure 5, the open-drain out-

put can be connected to voltages from 0 to 5.5V. This

allows for easy logic compatibility to various micro-

processors.

Negative-Going VCC Transients

In addition to issuing a reset to the µP during power-up,

power-down, and brownout conditions, these supervisors

are relatively immune to short-duration negative-going

transients (glitches). The Maximum Transient Duration vs.

Reset Threshold Overdrive graph in the Typical

Operating Characteristics shows this relationship.

The area below the curve of the graph is the region in

which these devices typically do not generate a reset

pulse. This graph was generated using a negative-

going pulse applied to VCC, starting above the actual

reset threshold (VTH) and ending below it by the magni-

tude indicated (reset-threshold overdrive). As the mag-

nitude of the transient decreases (farther below the

reset threshold), the maximum allowable pulse width

decreases. Typically, a VCC transient that goes 100mV

below the reset threshold and lasts 50µs or less will not

cause a reset pulse to be issued.

Ensuring a Valid RESET or

RESET

Down to VCC = 0

When VCC falls below 1V, RESET/RESET current sink-

ing (sourcing) capabilities decline drastically. In the

case of the MAX6412, MAX6415, and MAX6418, high-

impedance CMOS-logic inputs connected to RESET

can drift to undetermined voltages. This presents no

problems in most applications, since most µPs and

other circuitry do not operate with VCC below 1V.

In those applications where RESET must be valid down

to 0, adding a pulldown resistor between RESET and

ground sinks any stray leakage currents, holding

RESET low (Figure 6). The value of the pulldown resis-

tor is not critical; 100kΩis large enough not to load

RESET and small enough to pull RESET to ground. For

applications using the MAX6413, MAX6416, and

MAX6419, a 100kΩpullup resistor between RESET and

VCC will hold RESET high when VCC falls below 1V

(Figure 7). Open-drain RESET versions are not recom-

mended for applications requiring valid logic for VCC

down to 0.

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

8_______________________________________________________________________________________

MAX6414

MAX6417

MAX6420

VCC

GND

3.3V 5.0V

RESET

10kΩ

5V SYSTEM

Figure 5. MAX6414/MAX6417/MAX6420 Open-Drain

RESET

Output Allows use with Multiple Supplies

MAX6412

MAX6415

MAX6418

GND

VCC

RESET

100kΩ

Figure 6. Ensuring

RESET

Valid to VCC = 0

MAX6413

MAX6416

MAX6419

GND

VCC

RESET

100kΩ

Figure 7. Ensuring RESET Valid to VCC = 0

Layout Consideration

SRT is a precise current source. When developing the

layout for the application, be careful to minimize board

capacitance and leakage currents around this pin.

Traces connected to SRT should be kept as short as

possible. Traces carrying high-speed digital signals

and traces with large voltage potentials should be rout-

ed as far from SRT as possible. Leakage current and

stray capacitance (e.g., a scope probe) at this pin

could cause errors in the reset timeout period. When

evaluating these parts, use clean prototype boards to

ensure accurate reset periods.

RESET IN is a high-impedance input, which is typically

driven by a high-impedance resistor-divider network

(e.g., 1MΩto 10MΩ). Minimize coupling to transient sig-

nals by keeping the connections to this input short. Any

DC leakage current at RESET IN (e.g., a scope probe)

causes errors in the programmed reset threshold.

Chip Information

TRANSISTOR COUNT: 325

PROCESS: BiCMOS

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

_______________________________________________________________________________________ 9

Table 1. Reset Voltages Suffix Table

SUFFIX MIN TYP MAX

16 1.536 1.575 1.614

17 1.623 1.665 1.707

18 1.755 1.800 1.845

19 1.853 1.900 1.948

20 1.950 2.000 2.050

21 2.048 2.100 2.153

22 2.133 2.188 2.243

23 2.313 2.313 2.371

24 2.340 2.400 2.460

25 2.438 2.500 2.563

26 2.559 2.625 2.691

27 2.633 2.700 2.768

28 2.730 2.800 2.870

29 2.852 2.925 2.998

30 2.925 3.000 3.075

31 2.998 3.075 3.152

32 3.120 3.200 3.280

33 3.218 3.300 3.383

34 3.315 3.400 3.485

35 3.413 3.500 3.558

36 3.510 3.600 3.690

37 3.608 3.700 3.793

38 3.705 3.800 3.895

39 3.803 3.900 3.998

40 3.900 4.000 4.100

41 3.998 4.100 4.203

42 4.095 4.200 4.305

43 4.193 4.300 4.408

44 4.266 4.375 4.484

45 4.388 4.500 4.613

46 4.509 4.625 4.741

47 4.583 4.700 4.818

48 4.680 4.800 4.920

49 4.778 4.900 5.023

50 4.875 5.000 5.125

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

10 ______________________________________________________________________________________

PART* TOP MARK

MAX6412UK16-T ADVY

MAX6412UK22-T ADWA

MAX6412UK26-T ADWC

MAX6412UK29-T ADWD

MAX6412UK46-T ADWG

MAX6413UK16-T ADWI

MAX6413UK22-T ADWK

MAX6413UK26-T ADWM

MAX6413UK29-T ADWN

MAX6413UK46-T ADWQ

MAX6414UK16-T ADWS

MAX6414UK22-T ADWU

MAX6414UK26-T ADWW

MAX6414UK29-T ADWX

MAX6414UK46-T ADXA

MAX6415UK-T ADZO

MAX6416UK-T ADZP

MAX6417UK-T ADZQ

MAX6418UK16-T ADYG

MAX6418UK22-T ADYI

MAX6418UK26-T ADYK

MAX6418UK29-T ADYL

MAX6418UK46-T ADYO

MAX6419UK16-T ADYQ

MAX6419UK22-T ADYS

MAX6419UK26-T ADYU

MAX6419UK29-T ADYV

MAX6419UK46-T ADYY

MAX6420UK16-T ADZA

MAX6420UK22-T ADZC

MAX6420UK26-T ADZE

MAX6420UK29-T ADZF

MAX6420UK46-T ADZI

Standard Versions Table

*Sample Stock is generally held on all standard versions.

Contact factory for availability of nonstandard versions.

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

______________________________________________________________________________________ 11

PART FIXED

VTH

MANUAL

RESET RESET IN PUSH-PULL

RESET

PUSH-PULL

RESET

OPEN-DRAIN

RESET

MAX6412 ✔✔—✔——

MAX6413 ✔✔——✔—

MAX6414 ✔✔———✔

MAX6415 — — ✔✔——

MAX6416 — — ✔—✔—

MAX6417 — — ✔——✔

MAX6418 ✔—✔✔——

MAX6419 ✔—✔—✔—

MAX6420 ✔—✔——✔

Selector Guide

Typical Operating Circuit

MAX6412

MAX6413

MAX6414

SRTGND

VCC

RESET/RESET

µP

RESET/RESET

MAX6412–MAX6420

Low-Power, Single/Dual-Voltage µP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

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.

12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

SOT-23 5L .EPS

21-0057

PACKAGE OUTLINE, SOT-23, 5L

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,

go to www.maxim-ic.com/packages.)