MAX6414UK27+T [MAXIM]
Power Supply Support Circuit, Fixed, 1 Channel, +2.7VV, BICMOS, PDSO5, LEAD FREE, MO-178AA, SOT-23, 5 PIN;
| 型号： | MAX6414UK27+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, +2.7VV, BICMOS, PDSO5, LEAD FREE, MO-178AA, SOT-23, 5 PIN 信息通信管理 光电二极管 |
| 文件： | 总12页 (文件大小：650K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
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
Benefits and Features
● Monitor System Voltages from 1.6V to 5V
● Capacitor-Adjustable Reset Timeout Period
● Manual Reset Input
whenever the V
supply voltage or RESET IN falls
CC
(MAX6412/MAX6413/MAX6414)
below its reset threshold or the manual reset input is
● Adjustable Reset Input Option (MAX6415–MAX6420)
asserted. The reset output remains asserted for the reset
timeout period after V
and RESET IN rise above the
CC
● Dual-Voltage Monitoring
reset threshold and the manual reset input is deasserted.
The reset timeout is externally set by a capacitor to provide
more flexibility.
(MAX6418/MAX6419/MAX6420)
● Low Quiescent Current (1.7μA, typ)
● 3 RESET Output Options
• Push-Pull RESET
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.
• Push-Pull RESET
• Open-Drain RESET
● Guaranteed Reset Valid to V
= 1V
CC
● Power-Supply Transient Immunity
● Small SOT23-5 Packages
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
Selector Guide, Ordering Information, and Typical
Operating Circuit appear at end of data sheet.
Pin Configuration
TOP VIEW
RESET/RESET
GND
1
2
3
5
4
V
CC
MAX6412
MAX6420
RESET IN (MR)
SRT
SOT23-5
( ) FOR THE MAX6412/MAX6413/MAX6414.
19-2336; Rev 7; 12/15
MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Absolute Maximum Ratings
All Voltages Referenced to GND
Operating Temperature Range......................... -40°C to +125°C
V
.......................................................................-0.3V to +6.0V
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
CC
SRT, MR, RESET IN ................................ -0.3V to (V
RESET, RESET (Push-Pull)..................... -0.3V to (V
+ 0.3V)
+ 0.3V)
CC
CC
RESET (Open-Drain) ...........................................-0.3V to +6.0V
Input Current (All Pins).....................................................±20mA
Output Current (RESET, RESET)....................................±20mA
Continuous Power Dissipation (T = +70°C)
A
5-Pin SOT23 (derate 7.1mW/°C above +70°C) ..........571mW
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
(V
= 1V to 5.5V, T = T
A
to T
, unless otherwise specified. Typical values are at V
= 5V and T = +25°C.) (Note 1)
CC
MIN
MAX
CC A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
5.5
UNITS
Supply Voltage Range
V
1.0
V
CC
V
V
V
≤ 5.0V
≤ 3.3V
≤ 2.0V
2.6
2
4.5
CC
CC
CC
Supply Current
I
3.5
µA
V
CC
1.7
2.5
V
-
V
+
TH
TH
T
T
= +25°C
A
A
1.25%
1.25%
V
Reset Threshold
CC
V
TH
Accuracy
V
2.5%
-
V
+
TH
TH
= -40°C to +125°C
2.5%
Hysteresis
V
4 x V
mV
µs
HYST
TH
V
to Reset Delay
t
V falling at 1mV/µs
CC
100
4.375
0.275
240
CC
RD
C
C
= 1500pF
= 0F
3.00
5.75
SRT
SRT
SRT
Reset Timeout Period
t
ms
RP
V
V
Ramp Current
I
V
V
V
V
V
V
V
V
V
= 0 to 0.65V; V
= 1.6V to 5V
nA
V
SRT
SRT
RAMP
CC
Ramp Threshold
V
= 1.6V to 5V (V
rising)
0.65
33
TH-RAMP
CC
RAMP
RAMP Threshold Hysteresis
falling threshold
mV
RAMP
≥ 1.0V, I
= 50µA
0.3
0.3
0.4
CC
CC
CC
CC
CC
CC
SINK
SINK
SINK
RESET Output Voltage LOW
V
≥ 2.7V, I
≥ 4.5V, I
≥ 1.8V, I
= 1.2mA
= 3.2mA
V
OL
= 200µA
0.8 x V
0.8 x V
0.8 x V
SOURCE
CC
CC
CC
RESET Output Voltage HIGH,
(Push-Pull)
V
≥ 2.25V, I
= 500µA
V
OH
SOURCE
≥ 4.5V, I
= 800µA
SOURCE
RESET Output Leakage
Current, (Open-Drain)
I
V
> V , reset not asserted
1.0
µA
LKG
CC
TH
V
V
V
V
≥ 1.0V, I
≥ 1.8V, I
≥ 2.7V, I
≥ 4.5V, I
= 1µA
0.8 x V
0.8 x V
0.8 x V
0.8 x V
CC
CC
CC
CC
SOURCE
SOURCE
SOURCE
SOURCE
CC
CC
CC
CC
= 150µA
= 500µA
= 800µA
RESET Output Voltage HIGH
V
V
OH
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MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Electrical Characteristics (continued)
(V
= 1V to 5.5V, T = T
to T
, unless otherwise specified. Typical values are at V
= 5V and T = +25°C.) (Note 1)
CC
A
MIN
MAX
CC A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
0.3
0.3
0.4
10
UNITS
V
V
V
≥ 1.8V, I
≥ 2.7V, I
≥ 4.5V, I
= 500µA
= 1.2mA
= 3.2mA
CC
CC
CC
SINK
SINK
SINK
RESET Output Voltage LOW
V
V
OL
RESET IN Leakage Current
RESET IN Threshold
nA
V
V
V
V
falling, V = 1.6V to 5.0V
1.205
2.4
1.255
RST
RST
CC
V
0.8
IL
> 4.0V
< 4.0V
CC
CC
V
IH
MR Input
V
V
0.3 x V
CC
IL
V
V
0.7 x V
1
IH
CC
MR Minimum Pulse Width
MR Glitch Rejection
MR to RESET Delay
MR Pullup Resistance
µs
ns
ns
kΩ
75
20
20
Pull up to V
12
28
CC
Note 1: Devices production tested at T = +25°C. Over temperature limits are guaranteed by design.
A
Typical Operating Characteristics
(V
= 5V, C
= 1500pF, T = +25°C, unless otherwise noted.)
CC
SRT A
SUPPLY CURRENT vs.
SUPPLY VOLTAGE
SUPPLY CURRENT vs.
TEMPERATURE
RESET TIMEOUT PERIOD vs. C
SRT
10,000
1000
100
10
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
4
3
2
1
T
= +125°C
V
= 5V
A
CC
V
V
= 3.3V
= 1.8V
CC
T
A
= +25°C
CC
T
= -40°C
A
V
CC
= 1V
1
0.1
0
0
1000
100
0.001 0.01
0.1
1
10
1
2
3
4
5
6
-50 -25
0
25
50
75 100 125
C
SRT
(nF)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
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MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Typical Operating Characteristics (continued)
(V
= 5V, C
= 1500pF, T = +25°C, unless otherwise noted.)
CC
SRT A
RESET TIMEOUT PERIOD
vs. TEMPERATURE
RESET TIMEOUT PERIOD
vs. TEMPERATURE
600
550
500
450
400
4.30
C
= 1500pF
C
= 0
SRT
SRT
4.25
4.20
4.15
4.10
4.05
350
300
250
200
-50 -25
0
25
75 100 125
-50 -25
0
25
50
75 100 125
50
TEMPERATURE (°C)
TEMPERATURE (C)
RESET IN THRESHOLD VOLTAGE
vs. TEMPERATURE
MAXIMUM TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE
175
150
125
100
75
1.280
1.275
1.270
1.265
1.260
1.255
1.250
RESET OCCURS
ABOVE THE CURVE
50
25
V
TH
= 3.0V
800
0
-50 -25
0
25
50
75 100 125
0
200
400
600
1000
TEMPERATURE (°C)
RESET THRESHOLD OVERDRIVE (mV)
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MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Pin Description
PIN
MAX6412/ MAX6415/ MAX6418/
MAX6413/ MAX6416/ MAX6419/
NAME
FUNCTION
MAX6414
MAX6417
MAX6420
RESET changes from high to low whenever V
or RESET IN drops below the
, respectively) or manual
CC
selected reset threshold voltage (V or V
TH
RESET IN
RESET
reset is pulled low. RESET remains low for the reset timeout period after all
reset conditions are deasserted and then goes high.
1
1
1
RESET changes from low to high whenever the V
or RESET IN drops below
CC
the selected reset threshold voltage (V or V
pulled low. RESET remains high for the reset timeout period after all reset
conditions are deasserted and then goes low.
) or manual reset is
TH
RESET IN
RESET
GND
2
2
3
2
3
Ground
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.
RESET
IN
—
Manual Reset Input. Pull this pin low to manually reset the device. Reset
remains asserted for the reset timeout period after MR is released.
3
—
—
MR
Set Reset Timeout Input. Connect a capacitor between SRT and ground to
4
5
4
5
4
5
SRT
set the timeout period. Determine the period as follows:
6
t
= (2.71 x 10 ) x C
+ 275µs with t in seconds and C
in Farads.
SRT
RP
SRT
RP
V
Supply Voltage and Input for Fixed-Threshold V
Monitor
CC
CC
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).
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.
For the MAX6413, MAX6416, and MAX6419, RESET
changes from low to high whenever V
or RESET IN
CC
drops below the reset threshold voltages. Once RESET
IN and V exceed their respective reset threshold
voltage(s), RESET remains high for the reset timeout
period, then goes low.
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.
CC
On power-up, once V
reaches 1V, RESET is guaran-
CC
teed to be a logic high. For applications requiring valid
reset logic when V is less than 1V, see the section
CC
Ensuring a Valid RESET/RESET Output Down to V
= 0V
.
CC
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
A reset signal is asserted when V
falls below the preset values or when MR is asserted.
The reset remains asserted for an externally programmed
and/or RESET IN
CC
valid for V
≥ 1V.
interval after V
and/or RESET IN has risen above the
CC
CC
reset threshold or MR is deasserted.
Reset Threshold
Reset Output
The reset output is typically connected to the reset input
The MAX6415–MAX6420 monitor the voltage on RESET
IN with an external resistor voltage-divider (Figure 1).
of a μP. A μP’s reset input starts or restarts the μP in a
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MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Use the following formula to calculate the externally moni-
tored voltage (V ):
MON_TH
V
CC
V
= V
x (R1 + R2)/R2
MON_TH
RST
where V
is the desired reset threshold voltage
MON_TH
and V
is the reset input threshold (1.26V). Resistors
RST
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
RESET IN
V
CC
MAX6415
MAX6420
R1 = R2 x (V
/V
- 1) (Ω)
MON_TH RST
GND
SRT
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).
Figure 2. Adding an External Manual Reset Function to the
MAX6415–MAX6420
Monitoring Voltages Other than V
(MAX6415/MAX6416/MAX6417)
CC
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.
The MAX6415/MAX6416/MAX6417 contain an adjust-
able reset threshold input. These devices can be used
to monitor voltages other than V . Calculate V
CC
MON_TH
as shown in the Reset Threshold section. (See Figure 3.)
V
MON_TH
V
V
CC
MON_TH
R1
R2
R1
R2
RESET IN
V
CC
RESET IN
V
CC
MAX6415
MAX6415
MAX6416
MAX6417
GND
SRT
MAX6416
MAX6417
GND
SRT
V
= 1.26 x (R1 + R2)/R2
MON_TH
Figure 1. Calculating the Monitored Threshold Voltage (V
)
Figure 3. Monitoring External Voltages
MON_TH
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MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
V
MON_TH
V
CC
MAX6420
ONLY
V
CC
LASER-TRIMMED
RESISTORS
R
L
(RESET)
RESET
RESET
CIRCUITRY
1.26V
µP
R1
R2
RESET IN
GND
SRT
MAX6418
MAX6419
MAX6420
C
SRT
Figure 4. MAX6418/MAX6419/MAX6420 Monitoring Two Voltages
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
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,
V
CC
and V
(see Figure 4). Reset is asserted
MON_TH
the formula: dV/dt = I/C. The C
0.65V to deassert the reset. C
capacitor must ramp to
must be a low-leakage
SRT
SRT
when either of the voltages falls below its respective
threshold voltage.
(<10nA) type capacitor, ceramic is recommended.
Application Information
Operating as a Voltage Detector
Selecting a Reset Capacitor
The reset timeout period is adjustable to accommodate a
The MAX6412–MAX6420 can be operated in a voltage
detector mode by leaving SRT unconnected. The reset
delay times for V
rising above or falling below the
variety of μP applications. Adjust the reset timeout period
CC
threshold are not significantly different. The reset output
is deasserted smoothly without false pulses.
(t ) by connecting a capacitor (C
ground. Calculate the reset timeout capacitor as follows:
) between SRT and
RP
SRT
6
C
SRT
= (t
- 275μs) / (2.71 x 10 )
RP
where t
is in seconds and C
is in Farads
RP
SRT
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MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
CMOS-logic inputs connected to RESET can drift to
undetermined voltages. This presents no problems in
3.3V
5.0V
most applications, since most μPs and other circuitry do
not operate with V
below 1V.
CC
V
CC
10kΩ
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
RESET
MAX6414
MAX6417
MAX6420
5V SYSTEM
pullup resistor between RESET and V
will hold RESET
CC
high when V
falls below 1V (Figure 7). Open-drain
CC
GND
RESET versions are not recommended for applications
requiring valid logic for V down to 0V.
CC
Figure 5. MAX6414/MAX6417/MAX6420 Open-Drain RESET
Output Allows use with Multiple Supplies
V
CC
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.
MAX6412
MAX6415
MAX6418
V
CC
RESET
100kΩ
Negative-Going V
Transients
GND
CC
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.
Figure 6. Ensuring RESET Valid to V
= 0V
CC
V
CC
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
100kΩ
MAX6413
MAX6416
MAX6419
V
CC
pulse applied to V , starting above the actual reset
CC
threshold (V ) and ending below it by the magnitude
TH
indicated (reset-threshold overdrive). As the magnitude of
the transient decreases (farther below the reset thresh-
old), the maximum allowable pulse width decreases.
RESET
Typically, a V
transient that goes 100mV below the
CC
reset threshold and lasts 50μs or less will not cause a
reset pulse to be issued.
GND
Ensuring a Valid RESET or RESET
Down to V
= 0V
CC
Figure 7. Ensuring RESET Valid to V
= 0V
CC
When V
falls below 1V, RESET/RESET current sinking
CC
(sourcing) capabilities decline drastically. In the case of
the MAX6412, MAX6415, and MAX6418, high-impedance
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MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Layout Consideration
Table 1. Reset Voltages Suffix Table
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.
SUFFIX
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
MIN
TYP
MAX
1.614
1.707
1.845
1.948
2.050
2.153
2.243
2.371
2.460
2.563
2.691
2.768
2.870
2.998
3.075
3.152
3.280
3.383
3.485
3.558
3.690
3.793
3.895
3.998
4.100
4.203
4.305
4.408
4.484
4.613
4.741
4.818
4.920
5.023
5.125
1.536
1.623
1.755
1.853
1.950
2.048
2.133
2.313
2.340
2.438
2.559
2.633
2.730
2.852
2.925
2.998
3.120
3.218
3.315
3.413
3.510
3.608
3.705
3.803
3.900
3.998
4.095
4.193
4.266
4.388
4.509
4.583
4.680
4.778
4.875
1.575
1.665
1.800
1.900
2.000
2.100
2.188
2.313
2.400
2.500
2.625
2.700
2.800
2.925
3.000
3.075
3.200
3.300
3.400
3.500
3.600
3.700
3.800
3.900
4.000
4.100
4.200
4.300
4.375
4.500
4.625
4.700
4.800
4.900
5.000
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.
Chip Information
TRANSISTOR COUNT: 325
PROCESS: BiCMOS
Maxim Integrated
│ 9
www.maximintegrated.com
MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Standard Versions Table
Ordering Information
PART*
PART
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
5 SOT23
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
MAX6412UK_ _-T
MAX6412UK_ _+T
MAX6413UK_ _-T
MAX6413UK_ _+T
MAX6414UK_ _-T
MAX6414UK_ _+T
MAX6414UK_ _/V+T*
MAX6415UK+T
MAX6416UK+T
MAX6417UK+T
MAX6418UK_ _-T
MAX6418UK_ _+T
MAX6419UK_ _-T
MAX6419UK_ _+T
MAX6420UK_ _-T
MAX6420UK_ _+T
MAX6420UK_ _/V-T*
MAX6416UK-T
MAX6417UK-T
Note: The MAX6412/MAX6413/MAX6414 and MAX6418/
MAX6419/MAX6420 are available with factory-set V reset
CC
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
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.
*Sample Stock is generally held on all standard versions.
Contact factory for availability of nonstandard versions.
Maxim Integrated
│ 10
www.maximintegrated.com
MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Selector Guide
FIXED
MANUAL
RESET
PUSH-PULL
PUSH-PULL
OPEN-DRAIN
PART
RESET IN
V
RESET
RESET
RESET
TH
MAX6412
MAX6413
MAX6414
MAX6415
MAX6416
MAX6417
MAX6418
MAX6419
MAX6420
—
—
—
ü
ü
ü
ü
ü
ü
—
ü
—
—
ü
ü
ü
ü
ü
ü
—
—
ü
—
—
ü
ü
ü
—
—
—
ü
—
—
—
—
—
—
—
—
ü
—
—
ü
—
—
ü
—
—
ü
—
—
ü
—
ü
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.
V
CC
V
CC
RESET/RESET
MAX6412
MAX6413
MAX6414
RESET/RESET
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
µP
5 SOT23
U5+2, U5-2
21-0057
90-0174
MR
GND
SRT
Maxim Integrated
│ 11
www.maximintegrated.com
MAX6412–MAX6420
Low-Power, Single/Dual-Voltage μP Reset Circuits
with Capacitor-Adjustable Reset Timeout Delay
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
DESCRIPTION
CHANGED
0
1
2
3
4
5
6
01/02
8/03
12/05
3/10
2/11
Initial release
—
Corrected top marks
10
1
Added lead-free information in Ordering Information
Deleted RESET in Hysteresis parameter in the Electrical Characteristics table
Corrected formula for SRT
3
5, 7
1
8/12
3/14
Added automotive qualified part to Ordering Information
Added MAX6414UK_ _/V+T to Ordering Information
1
Added lead-free part numbers to Ordering Information table, updated package
code and removed top mark information from page 10.
7
12/15
1, 10
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.
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.
2015 Maxim Integrated Products, Inc.
│ 12
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