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MAX6412-20 Datasheet

Maxim Integrated

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Datasheet

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.
Benefits 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
Push-Pull RESET
• Open-Drain RESET
Guaranteed Reset Valid to VCC = 1V
Power-Supply Transient Immunity
Small SOT23-5 Packages
AEC-Q100 Qualified, Refer to Ordering Information
for Specific /V Parts
Applications
Automotive
Medical Equipment
Intelligent Instruments
Portable Equipment
Battery-Powered Computers/Controllers
Embedded Controllers
Critical μP Monitoring
Set-Top Boxes
Computers
19-2336; Rev 10; 2/19
Selector Guide, Ordering Information, and Typical
Operating Circuit appear at end of data sheet.
Click here for production status of specific part numbers.
GND
SRT
1 5 VCC
MAX6412
MAX6420
SOT23-5
TOP VIEW
2
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 Configuration
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
MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
www.maximintegrated.com Maxim Integrated
2
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.
SOT23-5
PACKAGE CODE U5+2/U5+2A
Outline Number 21-0057
Land Pattern Number 90-0174
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θJA) 324.3°C/W
Junction to Case (θJC) 82°C/W
Thermal Resistance, Multi-Layer Board:
Junction to Ambient (θJA) 255.9°C/W
Junction to Case (θJC) 81°C/W
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
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.
Package Information
(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.
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
V
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
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
V
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
MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
www.maximintegrated.com Maxim Integrated
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Electrical 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)
0
50
25
100
75
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
0
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
1
100
10
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)
4
3
2
1
0
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
Maxim Integrated
4
www.maximintegrated.com
MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Typical Operating Characteristics
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).
PIN
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
IN
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
R1
VMON_TH
VMON_TH = 1.26 x (R1 + R2)/R2
R2 MAX6415
MAX6416
MAX6417
SRT
GND
RESET IN VCC
VCC
R1
VMON_TH
R2
MAX6415
MAX6420
SRT
GND
RESET IN VCC
R1
VCC
R2
MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
www.maximintegrated.com Maxim Integrated
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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
VCC
1.26V
RESET IN
GND
R1
R2
SRT
CSRT
(RESET)
RESET
VMON_TH
MAX6418
MAX6419
MAX6420
MAX6420
ONLY
RL
µP
MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
www.maximintegrated.com Maxim Integrated
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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
10k
5V SYSTEM
MAX6412
MAX6415
MAX6418
GND
VCC
VCC
RESET
100k
MAX6413
MAX6416
MAX6419
GND
VCC
VCC
RESET
100k
MAX6412–MAX6420 Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
www.maximintegrated.com Maxim Integrated
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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
www.maximintegrated.com Maxim Integrated
9
Chip Information
TRANSISTOR COUNT: 329
PROCESS: BiCMOS
*Sample Stock is generally held on all standard versions.
Contact factory for availability of nonstandard versions.
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*
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
www.maximintegrated.com Maxim Integrated
10
Standard Versions Table
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
MAX6414UK29/V+T -40°C to +125°C 5 SOT23
MAX6414UK31/V+T -40°C to +125°C 5 SOT23
MAX6414UK175/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 — üü
MAX6417 — ü— — ü
MAX6418 üü ü — —
MAX6419 üüü
MAX6420 üü— — ü
MAX6412
MAX6413
MAX6414
SRTGND
VCC
VCC
MR
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
11
Selector Guide
Typical Operating Circuit
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 qualified 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
8 3/18 Updated Benefits and Features and Ordering Information tables 1, 10
9 12/18 Added Package Information 2
10 2/19 Updated Transistor Count 9
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 specifications 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.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2019 Maxim Integrated Products, Inc.
12
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 visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.

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