MAX6420UK50+T - Maxim Integrated

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.

Benets and 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

Applications

●Automotive

●Medical Equipment

●Intelligent Instruments

●Portable Equipment

●Battery-Powered Computers/Controllers

●Embedded Controllers

● Critical μP Monitoring

●Set-Top Boxes

●Computers

19-2336; Rev 7; 12/15

Selector Guide, Ordering Information, and Typical

Operating Circuit appear at end of data sheet.

GND

SRT

1 5 VCC

MAX6412

MAX6420

SOT23-5

TOP VIEW

3 4

RESET/RESET

RESET IN (MR)

( ) FOR THE MAX6412/MAX6413/MAX6414.

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

Pin Conguration

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 (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

Soldering Temperature (reflow)

Lead(Pb)-free packages ..............................................+260°C

Packages containing lead (Pb) ....................................+240°C

(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

Supply Voltage Range VCC 1.0 5.5 V

Supply Current ICC

VCC ≤ 5.0V 2.6 4.5

µAVCC ≤ 3.3V 2 3.5

VCC ≤ 2.0V 1.7 2.5

VCC Reset Threshold

Accuracy VTH

TA = +25°C VTH -

1.25%

VTH +

1.25% V

TA = -40°C to +125°C VTH -

2.5%

VTH +

2.5%

Hysteresis VHYST 4 x VTH mV

VCC to Reset Delay tRD VCC falling at 1mV/µs 100 µs

Reset Timeout Period tRP

CSRT = 1500pF 3.00 4.375 5.75 ms

CSRT = 0F 0.275

VSRT Ramp Current IRAMP VSRT = 0 to 0.65V; VCC = 1.6V to 5V 240 nA

VSRT Ramp Threshold VTH-RAMP VCC = 1.6V to 5V (VRAMP rising) 0.65 V

RAMP Threshold Hysteresis VRAMP falling threshold 33 mV

RESET Output Voltage LOW VOL

VCC ≥ 1.0V, ISINK = 50µA 0.3

VVCC ≥ 2.7V, ISINK = 1.2mA 0.3

VCC ≥ 4.5V, ISINK = 3.2mA 0.4

RESET Output Voltage HIGH,

(Push-Pull) VOH

VCC ≥ 1.8V, ISOURCE = 200µA 0.8 x VCC

VVCC ≥ 2.25V, ISOURCE = 500µA 0.8 x VCC

VCC ≥ 4.5V, ISOURCE = 800µA 0.8 x VCC

RESET Output Leakage

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

RESET Output Voltage HIGH VOH

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

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

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Absolute Maximum Ratings

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.

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)

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RESET Output Voltage LOW VOL

VCC ≥ 1.8V, ISINK = 500µA 0.3

VVCC ≥ 2.7V, ISINK = 1.2mA 0.3

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 1.205 1.255 V

MR Input

VIL VCC > 4.0V 0.8

VIH 2.4

VIL VCC < 4.0V 0.3 x VCC

VIH 0.7 x VCC

MR Minimum Pulse Width 1 µs

MR Glitch Rejection 75 ns

MR to RESET Delay 20 ns

MR Pullup Resistance Pull up to VCC 12 20 28 kΩ

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)

0 31 2 4 5 6

SUPPLY CURRENT vs.

SUPPLY VOLTAGE

MAX6412-20 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

TA = +125°C

TA = +25°C

TA = -40°C

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

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Electrical Characteristics (continued)

Typical Operating Characteristics

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

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

0 400200 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

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MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

Typical Operating Characteristics (continued)

Detailed Description

The MAX6412–MAX6420 low-power microprocessor (μP)

supervisory circuits provide maximum adjustability for

supply-voltage monitoring and reset functionality. In addi-

tion, 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 incre-

ments 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 adjust-

able 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 programmed

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 supervisory

circuits provide the reset logic to prevent code-execution

errors during power-up, power-down, and brownout con-

ditions (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

voltage(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 = 0V

The active-low RESET output of the remaining super-

visors 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).

NAME FUNCTION

MAX6412/

MAX6413/

MAX6414

MAX6415/

MAX6416/

MAX6417

MAX6418/

MAX6419/

MAX6420

111

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.

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.

2 2 2 GND 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 = (2.71 x 106) x CSRT + 275µs with tRP in seconds and CSRT in Farads.

5 5 5 VCC Supply Voltage and Input for Fixed-Threshold VCC Monitor

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

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Pin Description

Use the following formula to calculate the externally moni-

tored voltage (VMON_TH):

VMON_TH = VRST x (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 current

consumption due to low leakage currents. Set R2 to some

conveniently high value (1MΩ, for example) and calculate

R1 based on the desired monitored voltage, 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 20kΩ pullup resistor so it can be

left open if not used. Connect a normally open momentary

switch from MR to ground to create a manual reset func-

tion (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 adjust-

able 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.)

Figure 1. Calculating the Monitored Threshold Voltage (VMON_TH)Figure 3. Monitoring External Voltages

Figure 2. Adding an External Manual Reset Function to the

MAX6415–MAX6420

MAX6415

MAX6416

MAX6417

SRT

GND

RESET IN VCC

VMON_TH

VMON_TH = 1.26 x (R1 + R2)/R2

R2 MAX6415

MAX6416

MAX6417

SRT

GND

RESET IN VCC

VCC

VMON_TH

MAX6415

MAX6420

SRT

GND

RESET IN VCC

VCC

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

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Dual-Voltage Monitoring

(MAX6418/MAX6419/MAX6420)

The MAX6418/MAX6419/MAX6420 contain both factory-

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) / (2.71 x 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 leaving SRT unconnected. 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.

Figure 4. MAX6418/MAX6419/MAX6420 Monitoring Two Voltages

RESET

CIRCUITRY

LASER-TRIMMED

RESISTORS

VCC

1.26V

RESET IN

GND

SRT

CSRT

(RESET)

RESET

VMON_TH

MAX6418

MAX6419

MAX6420

ONLY

µP

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

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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 output can be

connected to voltages from 0 to 5.5V. This allows for easy

logic compatibility to various microprocessors.

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 magnitude

indicated (reset-threshold overdrive). As the magnitude of

the transient decreases (farther below the reset thresh-

old), 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 = 0V

When VCC falls below 1V, RESET/RESET current sinking

(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 resistor is not

critical; 100kΩ is large enough not to load RESET and

small enough to pull RESET to ground. For applications

using the MAX6413, MAX6416, and MAX6419, a 100kΩ

pullup resistor between RESET and VCC will hold RESET

high when VCC falls below 1V (Figure 7). Open-drain

RESET versions are not recommended for applications

requiring valid logic for VCC down to 0V.

Figure 5. MAX6414/MAX6417/MAX6420 Open-Drain RESET

Output Allows use with Multiple Supplies

Figure 6. Ensuring RESET Valid to VCC = 0V

Figure 7. Ensuring RESET Valid to VCC = 0V

MAX6414

MAX6417

MAX6420

VCC

GND

3.3V 5.0V

RESET

10kΩ

5V SYSTEM

MAX6412

MAX6415

MAX6418

GND

VCC

RESET

100kΩ

MAX6413

MAX6416

MAX6419

GND

VCC

RESET

100kΩ

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

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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 routed 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.,

1MΩ to 10MΩ). Minimize coupling to transient signals by

keeping the connections to this input short. Any DC leak-

age current at RESET IN (e.g., a scope probe) causes

errors in the programmed reset threshold.

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

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Chip Information

TRANSISTOR COUNT: 325

PROCESS: BiCMOS

*Sample Stock is generally held on all standard versions.

Contact factory for availability of nonstandard versions.

PART*

MAX6412UK16-T

MAX6412UK22-T

MAX6412UK26-T

MAX6412UK29-T

MAX6412UK46-T

MAX6413UK16-T

MAX6413UK22-T

MAX6413UK26-T

MAX6413UK29-T

MAX6413UK46-T

MAX6414UK16-T

MAX6414UK22-T

MAX6414UK26-T

MAX6414UK29-T

MAX6414UK46-T

MAX6415UK-T

MAX6416UK-T

MAX6417UK-T

MAX6418UK16-T

MAX6418UK22-T

MAX6418UK26-T

MAX6418UK29-T

MAX6418UK46-T

MAX6419UK16-T

MAX6419UK22-T

MAX6419UK26-T

MAX6419UK29-T

MAX6419UK46-T

MAX6420UK16-T

MAX6420UK22-T

MAX6420UK26-T

MAX6420UK29-T

MAX6420UK46-T

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

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Standard Versions Table

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.

/V denotes an automotive qualified part.

For top mark information, please visit Maxim’s website at

www.maximintegrated.com.

*Future product—contact factory for availability.

PART TEMP RANGE PIN-PACKAGE

MAX6412UK_ _-T -40°C to +125°C 5 SOT23

MAX6412UK_ _+T -40°C to +125°C 5 SOT23

MAX6413UK_ _-T -40°C to +125°C 5 SOT23

MAX6413UK_ _+T -40°C to +125°C 5 SOT23

MAX6414UK_ _-T -40°C to +125°C 5 SOT23

MAX6414UK_ _+T -40°C to +125°C 5 SOT23

MAX6414UK_ _/V+T* -40°C to +125°C 5 SOT23

MAX6415UK+T -40°C to +125°C 5 SOT23

MAX6416UK+T -40°C to +125°C 5 SOT23

MAX6417UK+T -40°C to +125°C 5 SOT23

MAX6418UK_ _-T -40°C to +125°C 5 SOT23

MAX6418UK_ _+T -40°C to +125°C 5 SOT23

MAX6419UK_ _-T -40°C to +125°C 5 SOT23

MAX6419UK_ _+T -40°C to +125°C 5 SOT23

MAX6420UK_ _-T -40°C to +125°C 5 SOT23

MAX6420UK_ _+T -40°C to +125°C 5 SOT23

MAX6420UK_ _/V-T* -40°C to +125°C 5 SOT23

Ordering Information

PART FIXED

VTH

MANUAL

RESET RESET IN PUSH-PULL

RESET PUSH-PULL

RESET

OPEN-DRAIN

RESET

MAX6412 ü ü —ü— —

MAX6413 ü ü — — ü—

MAX6414 ü ü ———ü

MAX6415 — — ü ü — —

MAX6416 — — ü—ü—

MAX6417 — — ü— — ü

MAX6418 ü—ü ü — —

MAX6419 ü—ü—ü—

MAX6420 ü—ü— — ü

PACKAGE

TYPE

PACKAGE

CODE

OUTLINE

NO.

LAND

PATTERN NO.

5 SOT23 U5+2, U5-2 21-0057 90-0174

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

www.maximintegrated.com Maxim Integrated

│

Selector Guide

Typical Operating Circuit Package Information

For the latest package outline information and land patterns

(footprints), go to www.maximintegrated.com/packages. Note

that a “+”, “#”, or “-” in the package code indicates RoHS status

only. Package drawings may show a different suffix character, but

the drawing pertains to the package regardless of RoHS status.

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 01/02 Initial release —

1 8/03 Corrected top marks 10

2 12/05 Added lead-free information in Ordering Information 1

3 3/10 Deleted RESET in Hysteresis parameter in the Electrical Characteristics table 3

4 2/11 Corrected formula for SRT 5, 7

5 8/12 Added automotive qualied part to Ordering Information 1

6 3/14 Added MAX6414UK_ _/V+T to Ordering Information 1

7 12/15 Added lead-free part numbers to Ordering Information table, updated package

code and removed top mark information from page 10. 1, 10

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)

shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

│

MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits

with Capacitor-Adjustable Reset Timeout Delay

Revision History

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

Mouser Electronics

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Maxim Integrated:

MAX6412UK22+T MAX6413UK29+T MAX6414UK29+T MAX6415UK+T MAX6416UK+T MAX6417UK+T

MAX6418UK29+T MAX6419UK31+T MAX6420UK29+T MAX6420UK32+T MAX6412UK16+T MAX6412UK17+T

MAX6412UK18+T MAX6412UK19+T MAX6412UK20+T MAX6412UK21+T MAX6412UK23+T MAX6412UK24+T

MAX6412UK25+T MAX6412UK26+T MAX6412UK27+T MAX6412UK28+T MAX6412UK29+T MAX6412UK30+T

MAX6412UK31+T MAX6412UK32+T MAX6412UK33+T MAX6412UK34+T MAX6412UK35+T MAX6412UK36+T

MAX6412UK37+T MAX6412UK38+T MAX6412UK39+T MAX6412UK40+T MAX6412UK41+T MAX6412UK42+T

MAX6412UK43+T MAX6412UK44+T MAX6412UK45+T MAX6412UK46+T MAX6412UK47+T MAX6412UK48+T

MAX6412UK49+T MAX6412UK50+T MAX6413UK16+T MAX6413UK17+T MAX6413UK18+T MAX6413UK19+T

MAX6413UK20+T MAX6413UK21+T MAX6413UK22+T MAX6413UK23+T MAX6413UK24+T MAX6413UK25+T

MAX6413UK26+T MAX6413UK27+T MAX6413UK28+T MAX6413UK30+T MAX6413UK31+T MAX6413UK32+T

MAX6413UK33+T MAX6413UK34+T MAX6413UK35+T MAX6413UK36+T MAX6413UK37+T MAX6413UK38+T

MAX6413UK39+T MAX6413UK40+T MAX6413UK41+T MAX6413UK42+T MAX6413UK43+T MAX6413UK44+T

MAX6413UK45+T MAX6413UK46+T MAX6413UK47+T MAX6413UK48+T MAX6413UK49+T MAX6413UK50+T

MAX6414UK16+T MAX6414UK17+T MAX6414UK175+T MAX6414UK18+T MAX6414UK19+T MAX6414UK20+T

MAX6414UK21+T MAX6414UK22+T MAX6414UK23+T MAX6414UK24+T MAX6414UK25+T MAX6414UK26+T

MAX6414UK27+T MAX6414UK28+T MAX6414UK30+T MAX6414UK31+T MAX6414UK32+T MAX6414UK33+T

MAX6414UK34+T MAX6414UK35+T MAX6414UK36+T MAX6414UK37+T