Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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
CC
= full range, T
A
= -40°C to +105°C, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Supply Voltage Range
Supply Current
SYMBOL
V
CC
I
CC
CONDITIONS
T
A
= 0°C to +105°C
T
A
= -40°C to +105°C
MIN
1.0
1.2
9
4
4.50
4.25
4.00
2.98
2.80
2.47
2.25
2.12
100
100
1.5
100
150
250
0.34
0.15
0.7 × V
CC
350
350
4.62
4.37
4.12
3.06
2.88
2.55
2.31
2.18
150
2
150
TYP
MAX
5.5
5.5
16
10
4.75
4.49
4.24
3.15
2.97
2.64
2.37
2.25
250
5
250
ms
µs
ms
µs
ms
V
V
μA
μA
V
UNITS
V
µA
V
CC
= +5.5V, V
CC
> V
TH
, no load
V
CC
= +3.6V, V
CC
> V
TH
, no load
MXD181_ _ R46
MXD181_ _ R44
MXD181_ _ R41
Reset Threshold
V
TH
MXD181_ _ R31
MXD181_ _ R29
MXD181_ _ R26
MXD181_ _ R23
MXD181_ _ R22
Active Reset-Timeout Period
V
CC
to Reset Delay
Push-Button Detect to Reset
Push-Button Reset-Timeout Period
Input Low Voltage
Input High Voltage
RESET
Output Source Current
RESET Output Source Current
t
RP
t
RD
t
PBRST
V
IL
V
IH
I
OH
I
OH
I
OL
I
OL
t
PB
V
CC
rising
V
CC
= (V
TH
+ 100mV) falling to (V
TH
- 200mV)
V
CC
rising, t
R
= 5μs
MXD1813/MXD1818 only
MXD1813/MXD1818 only
MXD1813/MXD1818
only
T
A
= +25°C to +105°C
T
A
= -40°C to +25°C
MXD1813/MXD1818 only
V
CC
≥ V
TH(MAX)
, reset not asserted,
MXD1810/MXD1815
V
CC
≥ V
TH(MAX)
, reset asserted,
MXD1812/MXD1817
V
CC
≥ 2.7V, reset asserted, V
OUT
= 0.4V
MXD1810/MXD1811/MXD1813/MXD1815/
MXD1816/MXD1818 (Note 2)
V
CC
≥ 2.7V, reset not asserted, V
OUT
= 0.4V
MXD1812/MXD1817
10
RESET
Output Sink Current
mA
RESET Output Sink Current
10
mA
www.maximintegrated.com
Maxim Integrated │ 2
MXD1810–MXD1813/
MXD1815–MXD1818
Electrical Characteristics (continued)
Low-Power μP Reset Circuits in 3-Pin
SC70/SOT23
(V
CC
= full range, T
A
= -40°C to +105°C, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Output High Voltage
Output Capacitance (Note 2)
Internal Pullup Resistor,
Open-Drain
SYMBOL
V
OH
C
OUT
R
P
0 < I
OH
< 500μA
MXD1811/MXD1816
CONDITIONS
MIN
V
CC
-
0.5
3.5
TYP
V
CC
-
0.1
10
5.5
7.5
MAX
UNITS
V
pF
kΩ
MXD1813/MXD1818
3.1
5.5
7.5
Note 1:
Production testing done at T
A
= +25°C; limits over temperature guaranteed by design.
Note 2:
The MXD1811/MXD1813/MXD1816/MXD1818 have an internal pullup resistor which may deliver 1mA of sink current.
Note 3:
Guaranteed by design.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
RESET/RESET NOT ASSERTED
V
CC
= +5V
MXD1810-13/15-18 toc01
MXD1810-13/15-18 toc02
160
TIMEOUT PERIOD (ms)
156
152
148
144
140
V
CC
= +2.5V
V
CC
= +5V
SUPPLY CURRENT (µA)
8
6
4
NORMALIZED RESET THRESHOLD
1.005
V
TH
= +4.62V
1.000
V
TH
= +2.18V
V
CC
= +3.3V
2
0
V
CC
= +2.5V
0.995
-04
-01
20
50
80
TEMPERATURE (°C)
110
-40
-10
20
50
80
TEMPERATURE (°C)
110
0.990
-40
-10
20
50
80
TEMPERATURE (°C)
110
POWER-DOWN RESET DELAY
vs. TEMPERATURE
MXD1810-13/15-18 toc04
MXD1810-13/15 toc05
2.5
2.0
1.5
1.0
0.5
0
V
TH
= +2.18V
V
TH
= +4.62V
MAXIMUM TRANSIENT DURATION (µs)
POWER-DOWN RESET DELAY (µs)
90
80
70
60
50
40
30
20
10
0
RESET OCCURS
ABOVE THIS LINE
OUTPUT VOLTAGE (mV)
160
120
80
40
0
-40
-10
20
50
80
TEMPERATURE (°C)
110
10
100
1000
RESET THRESHOLD OVERDRIVE, V
TH
- V
CC
(mV)
0
3
6
9
12
OUTPUT CURRENT (mA)
www.maximintegrated.com
Maxim Integrated │
3
MXD1810-13/15-18 toc06
3.0
100
MAXIMUM TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE
OUTPUT VOLTAGE
vs. OUTPUT SINK CURRENT
200
MXD1810-13/15-18 toc03
10
RESET TIMEOUT PERIOD
vs. TEMPERATURE (V
CC
RISING)
1.010
NORMALIZED RESET THRESHOLD
vs. TEMPERATURE (V
CC
FALLING)
15
MXD1810–MXD1813/
MXD1815–MXD1818
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
Low-Power μP Reset Circuits in 3-Pin
SC70/SOT23
OUTPUT VOLTAGE
vs. OUTPUT SOURCE CURRENT
MXD1810-13/15-18 toc07
INPUT LOW VOLTAGE (V)
0.4
V
CC
- V
OUT
(V)
0.3
0.2
0.1
0
V
CC
= +5.5V
0.6
0.4
V
CC
= +2.2V
0
0.5
1.0
1.5
2.5
2.0
OUTPUT CURRENT (mA)
3.0
0.2
-40
-10
20
50
80
TEMPERATURE (°C)
110
Pin Descriptions
MXD1810/MXD1815
PIN
SC70
2
1
3
SOT23
1
2
3
NAME
RESET
V
CC
FUNCTION
Push-Pull, Active-Low Reset Output.
RESET
changes from high to low when V
CC
drops
below the selected reset threshold.
RESET
remains low for the reset timeout period after
V
CC
exceeds the device reset threshold.
Supply Voltage and Input for Reset-Threshold Monitor
Ground
GND
MXD1811/MXD1816
PIN
SC70
2
1
3
SOT23
1
2
3
NAME
RESET
V
CC
FUNCTION
Open-Drain, Active-Low Reset Output.
RESET
changes from high to low when V
CC
drops
below the selected reset threshold.
RESET
remains low for the reset timeout period after
V
CC
exceeds the device reset threshold.
RESET
has an internal 5.5kΩ pullup resistor.
Supply Voltage and Input for Reset-Threshold Monitor
Ground
GND
www.maximintegrated.com
Maxim Integrated │ 4
MXD1810-13/15 toc08
0.5
0.8
INPUT LOW VOLTAGE
vs. V
CC
AND TEMPERATURE
MXD1810–MXD1813/
MXD1815–MXD1818
Pin Description (continued)
MXD1812/MXD1817
PIN
SC70
2
1
3
SOT23
1
2
3
NAME
RESET
V
CC
Low-Power μP Reset Circuits in 3-Pin
SC70/SOT23
FUNCTION
Push-Pull, Active-High Reset Output. RESET changes from low to high when V
CC
drops
below the selected reset threshold. RESET remains high for the reset timeout period after
V
CC
exceeds the device reset threshold.
Supply Voltage and Input for Reset- Threshold Monitor
Ground
GND
MXD1813/MXD1818
PIN
SC70
SOT23
NAME
FUNCTION
Open-Drain, Active-Low Reset Output with Manual Reset Detect.
RESET
changes from
high to low when V
CC
drops below the selected reset threshold, or
RESET
is externally
pulled low for at least 1.5μs.
RESET
remains low for the reset timeout period after V
CC
exceeds the device reset threshold or after the external manual reset is released.
RESET
has an internal 5.5kΩ pullup resistor.
Supply Voltage and Input for Reset-Threshold Monitor
Ground
2
1
RESET
1
3
2
3
GND
V
CC
Detailed Description
RESET/RESET
Output
A microprocessor’s (μP’s) reset input starts the micro-
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