MXD1812XR41+T [MAXIM]

Power Supply Support Circuit, Fixed, 1 Channel, +4.12VV, BICMOS, PDSO3, LEAD FREE, SC-70, 3 PIN;
MXD1812XR41+T
型号: MXD1812XR41+T
厂家: MAXIM INTEGRATED PRODUCTS    MAXIM INTEGRATED PRODUCTS
描述:

Power Supply Support Circuit, Fixed, 1 Channel, +4.12VV, BICMOS, PDSO3, LEAD FREE, SC-70, 3 PIN

信息通信管理 光电二极管
文件: 总10页 (文件大小:1009K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
General Description  
Features  
The MXD1810–MXD1813/MXD1815–MXD1818 fam-  
ily of microprocessor (μP) reset circuits monitor power  
supplies in μP and digital systems. These devices  
provide excellent circuit reliability and low cost by  
eliminating external components and adjustments when  
used with +2.5V/+3.0V/+3.3V (MXD1815–MXD1818),  
and +5V (MXD1810–MXD1813) systems.  
● Precision Monitoring of +2.5V, +3V, +3.3V, and +5V  
Power-Supply Voltages  
● Available in Four Reset Output Configurations  
● Factory-Set Reset Threshold Voltages: 2.18V,  
2.31V, 2.55V, 2.88V, 3.06V, 4.12V, 4.37V, 4.62V  
● ±2.5% Reset Threshold Accuracy Over Temperature  
● Fixed Reset Timeout Period: 100ms (min)  
These circuits assert a reset signal whenever the V  
CC  
supply voltage declines below a preset threshold, keeping  
reset asserted for at least 100ms after V rises above the  
● Guaranteed RESET/RESET Valid to V  
● Debounced Manual-Reset Detect (MXD1813/  
MXD1818)  
= +1V  
CC  
CC  
reset threshold. The MXD1813/MXD1818 also keep reset  
asserted for at least 100ms after the output is momentarily  
pulled to GND by an external pushbutton switch.  
● Power-Supply Transient Immunity  
● No External Components  
The MXD1812/MXD1817 have an active-high push-  
pull RESET output. The MXD1810/MXD1815 (push-  
pull) and MXD1811/MXD1813/MXD1816/MD1818 (open-  
drain) have an active-low RESET output. The open-drain  
● Low Power Consumption (4μA)  
● Pin Compatible with DS181_ Products (SOT23)  
● 3-Pin SC70 and SOT23 Packages  
devices  
(MXD1811/MXD1813/MXD1816/MXD1818)  
Ordering Information  
have an internal pullup resistor to V . The MXD1813/  
CC  
PART  
TEMP RANGE  
-40°C to +105°C  
-40°C to +105°C  
PIN-PACKAGE  
3 SOT23  
MXD1818 feature a debounced manual-reset feature that  
asserts a reset if the RESET pin is pulled low for more  
than 1.5μs. When used to initiate manual reset, RESET  
debounces signals from devices such as mechanical  
switches. For devices with this feature, the release of the  
external switch triggers the reset period.  
MXD1810UR_ _-T  
MXD1810XR_ _-T  
3 SC70  
The MXD1810–MXD1813/MXD1815–MXD1818 are available  
with factory-set V reset thresholds from +2.18V to +3.06V  
CC  
(MXD1815–MXD1818) and +4.12V to +4.62V (MXD1810–  
MXD1813). Choose the desired reset-threshold suffix from the  
Reset Threshold Table and insert it in place of the “_ _”  
following “R” in the part number. All devices are available in  
tape-and-reel only in 2500 unit increments. Other threshold  
voltages may be available. Contact factory for availability.  
The MXD1810–MXD1813/MXD1815–MXD1818 are  
guaranteed to output the correct logic state for V  
down  
CC  
to +1V. These ICs provide a reset comparator designed  
to ignore fast transients on V . Reset thresholds are  
CC  
Devices are available in both leaded and lead(Pb)-free packag-  
ing. Specify lead-free by replacing “-T” with “+T” when ordering.  
available between +2.18V and +4.62V. These  
small, low-power (4μA) devices are ideal for use in  
portable equipment. All are available in space-saving  
3-pin SC70 and SOT23 packages, and are specified from  
-40°C to +105°C.  
Ordering Information continued at end of data sheet.  
Pin Configurations  
TOP VIEW  
Applications  
● Computers and Controllers  
● Intelligent Instruments  
● Set-Top Boxes  
● Printers  
● Critical μP and μC Monitoring  
● Portable/Battery-Powered Equipment  
RESET  
V
1
2
1
2
CC  
(RESET)  
GND  
3
MXD181_X  
SC70-3  
3
GND  
MXD181_U  
SOT23-3  
RESET  
(RESET)  
V
CC  
() ARE FOR THE MXD1812/MXD1817  
19-2243; Rev 2; 11/14  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Absolute Maximum Ratings  
V
to GND .........................................................-0.3V to +6.0V  
Output Current (RESET, RESET)......................................20mA  
CC  
Push-Pull RESET (MXD1810/MXD1815),  
RESET (MXD1812/MXD1817) to GND...-0.3V to (V  
Open-Drain RESET (MXD1811/MXD1816)  
to GND..............................................................-0.3V to +6.0V  
Open-Drain RESET (MXD1813/MXD1818)  
to GND.................................................. -0.3V to (V  
Continuous Power Dissipation (T = +70°C)  
A
+ 0.3V)  
3-Pin SC70 (derate 2.17mW above +70°C)................174mW  
3-Pin SOT23 (derate 4mW/°C above +70°C) .............320mW  
Operating Temperature Range .........................-40°C to +105°C  
Junction Temperature......................................................+150°C  
Storage Temperature Range .............................-65°C to +150°C  
Lead Temperature (soldering, 10s) .................................+300°C  
CC  
+ 0.3V)  
CC  
Input Current (V , RESET)..............................................20mA  
CC  
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  
= full range, T = -40°C to +105°C, unless otherwise specified. Typical values are at T = +25°C.) (Note 1)  
CC  
A
A
PARAMETER  
SYMBOL  
CONDITIONS  
= 0°C to +105°C  
MIN  
1.0  
TYP  
MAX UNITS  
T
T
5.5  
V
A
Supply Voltage Range  
Supply Current  
V
CC  
= -40°C to +105°C  
1.2  
5.5  
A
V
V
= +5.5V, V  
= +3.6V, V  
> V , no load  
9
16  
µA  
10  
CC  
CC  
TH  
I
CC  
> V , no load  
4
CC  
CC  
TH  
MXD181_ _ R46  
MXD181_ _ R44  
MXD181_ _ R41  
MXD181_ _ R31  
MXD181_ _ R29  
MXD181_ _ R26  
MXD181_ _ R23  
MXD181_ _ R22  
4.50  
4.25  
4.00  
2.98  
2.80  
2.47  
2.25  
2.12  
100  
4.62  
4.37  
4.12  
3.06  
2.88  
2.55  
2.31  
2.18  
150  
2
4.75  
4.49  
4.24  
3.15  
V
Reset Threshold  
V
TH  
2.97  
2.64  
2.37  
2.25  
Active Reset-Timeout Period  
t
V
V
V
rising  
250  
5
ms  
µs  
RP  
CC  
CC  
CC  
= (V + 100mV) falling to (V - 200mV)  
TH  
TH  
V
to Reset Delay  
t
CC  
RD  
rising, t = 5μs  
100  
1.5  
150  
250  
ms  
µs  
R
Push-Button Detect to Reset  
t
MXD1813/MXD1818 only  
MXD1813/MXD1818 only  
PB  
Push-Button Reset-Timeout Period  
t
100  
150  
250  
0.34  
0.15  
ms  
PBRST  
T
= +25°C to +105°C  
= -40°C to +25°C  
MXD1813/MXD1818  
only  
A
Input Low Voltage  
V
V
V
IL  
T
A
Input High Voltage  
V
I
MXD1813/MXD1818 only  
0.7 × V  
IH  
CC  
V
≥ V , reset not asserted,  
CC  
TH(MAX)  
RESET Output Source Current  
350  
350  
μA  
OH  
OH  
MXD1810/MXD1815  
V
≥ V , reset asserted,  
CC  
TH(MAX)  
RESET Output Source Current  
RESET Output Sink Current  
RESET Output Sink Current  
I
μA  
mA  
mA  
MXD1812/MXD1817  
V
≥ 2.7V, reset asserted, V  
= 0.4V  
OUT  
CC  
I
MXD1810/MXD1811/MXD1813/MXD1815/  
MXD1816/MXD1818 (Note 2)  
10  
10  
OL  
OL  
V
≥ 2.7V, reset not asserted, V  
= 0.4V  
CC  
OUT  
I
MXD1812/MXD1817  
Maxim Integrated  
2  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Electrical Characteristics (continued)  
(V  
= full range, T = -40°C to +105°C, unless otherwise specified. Typical values are at T = +25°C.) (Note 1)  
CC  
A
A
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX UNITS  
V
0.5  
-
V
0.1  
-
CC  
CC  
Output High Voltage  
V
0 < I  
< 500μA  
V
OH  
OH  
Output Capacitance (Note 2)  
C
10  
7.5  
7.5  
pF  
kΩ  
OUT  
MXD1811/MXD1816  
3.5  
3.1  
5.5  
5.5  
Internal Pullup Resistor,  
Open-Drain  
R
P
MXD1813/MXD1818  
Note 1: Production testing done at T = +25°C; limits over temperature guaranteed by design.  
A
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 = +25°C, unless otherwise noted.)  
A
NORMALIZED RESET THRESHOLD  
vs. TEMPERATURE (V FALLING)  
RESET TIMEOUT PERIOD  
SUPPLY CURRENT vs. TEMPERATURE  
vs. TEMPERATURE (V RISING)  
CC  
CC  
1.010  
1.005  
1.000  
0.995  
0.990  
10  
RESET/RESET NOT ASSERTED  
160  
156  
152  
148  
144  
140  
V
= +5V  
CC  
8
6
4
2
0
V
= +5V  
CC  
V
= +4.62V  
TH  
V
= +2.5V  
CC  
V
= +2.18V  
TH  
V
= +3.3V  
CC  
V
= +2.5V  
CC  
-40  
-10  
20  
50  
80  
110  
-40  
-10  
20  
50  
80  
110  
-04  
-01  
20  
50  
80  
110  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
OUTPUT VOLTAGE  
vs. OUTPUT SINK CURRENT  
POWER-DOWN RESET DELAY  
vs. TEMPERATURE  
MAXIMUM TRANSIENT DURATION  
vs. RESET THRESHOLD OVERDRIVE  
100  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
200  
160  
120  
80  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
V
= +4.62V  
TH  
RESET OCCURS  
ABOVE THIS LINE  
V
= +2.18V  
TH  
40  
0
110  
-40  
-10  
20  
50  
80  
10  
100  
1000  
0
3
6
9
12  
15  
RESET THRESHOLD OVERDRIVE, V - V (mV)  
TEMPERATURE (°C)  
OUTPUT CURRENT (mA)  
TH CC  
Maxim Integrated  
3  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Typical Operating Characteristics (continued)  
(T = +25°C, unless otherwise noted.)  
A
OUTPUT VOLTAGE  
vs. OUTPUT SOURCE CURRENT  
INPUT LOW VOLTAGE  
vs. V AND TEMPERATURE  
CC  
0.5  
0.4  
0.3  
0.2  
0.1  
0
0.8  
0.6  
0.4  
0.2  
V
= +5.5V  
CC  
V
= +2.2V  
CC  
110  
-40  
-10  
20  
50  
80  
3.0  
0
0.5  
1.0  
1.5  
2.0  
2.5  
TEMPERATURE (°C)  
OUTPUT CURRENT (mA)  
Pin Descriptions  
MXD1810/MXD1815  
PIN  
NAME  
FUNCTION  
Push-Pull, Active-Low Reset Output. RESET changes from high to low when V  
SC70  
SOT23  
drops  
CC  
2
1
RESET  
below the selected reset threshold. RESET remains low for the reset timeout period after  
exceeds the device reset threshold.  
V
CC  
1
3
2
V
Supply Voltage and Input for Reset-Threshold Monitor  
Ground  
CC  
3
GND  
MXD1811/MXD1816  
PIN  
NAME  
FUNCTION  
SC70  
SOT23  
Open-Drain, Active-Low Reset Output. RESET changes from high to low when V  
drops  
CC  
2
1
RESET  
below the selected reset threshold. RESET remains low for the reset timeout period after  
exceeds the device reset threshold. RESET has an internal 5.5kΩ pullup resistor.  
V
CC  
1
3
2
V
Supply Voltage and Input for Reset-Threshold Monitor  
Ground  
CC  
3
GND  
Maxim Integrated  
4  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Pin Description (continued)  
MXD1812/MXD1817  
PIN  
NAME  
FUNCTION  
SC70  
SOT23  
Push-Pull, Active-High Reset Output. RESET changes from low to high when V  
drops  
CC  
2
1
RESET  
below the selected reset threshold. RESET remains high for the reset timeout period after  
V
exceeds the device reset threshold.  
CC  
1
3
2
V
Supply Voltage and Input for Reset- Threshold Monitor  
Ground  
CC  
3
GND  
MXD1813/MXD1818  
PIN  
NAME  
FUNCTION  
SC70  
SOT23  
Open-Drain, Active-Low Reset Output with Manual Reset Detect. RESET changes from  
high to low when V  
drops below the selected reset threshold, or RESET is externally  
CC  
2
1
RESET  
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.  
1
3
2
V
Supply Voltage and Input for Reset-Threshold Monitor  
Ground  
CC  
3
GND  
delay (t  
). A manual-reset input shorter than 1.5μs  
PBRST  
Detailed Description  
may release RESET without the 100ms minimum reset  
timeout delay. To facilitate use with mechanical switches,  
the MXD1813/MXD1818 contain internal debouncing  
circuitry. A debounced waveform is shown in Figure 6.  
RESET/RESET Output  
A microprocessor’s (μP’s) reset input starts the micro-  
processor in a known state. The MXD1810–MXD1813/  
MXD1815–MXD1818 μP supervisory circuits assert reset  
to prevent code-execution errors during power-up, power-  
down, and brownout conditions (Figure 4). Whenever  
Applications Information  
Interfacing to μPs with Bidirectional  
Reset Pins  
V
CC  
falls below the reset threshold, the reset output  
asserts. Once V  
exceeds the reset threshold, an  
CC  
Since the RESET output on the MXD1811/MXD1816  
is open drain, these devices interface easily with μPs  
that have bidirectional reset pins, such as the Motorola  
68HC11. Connecting the μP supervisor’s RESET output  
directly to the microcontroller’s (μC’s) RESET pin allows  
either device to assert reset (Figure 7). No external pullup  
resistor is required, as it is contained within the MXD1811/  
MXD1816.  
internal timer keeps the reset output asserted for the  
specified reset timeout period (t ). Reset is also  
RP  
triggered by an externally initiated rising edge on the  
RESET pin (MXD1813/MXD1818), following a low signal  
of 1.5μs minimum duration.  
Push-Button Reset (MXD1813/MXD1818)  
Many μP-based products require push-button reset  
capability (Figure 5), allowing the operator, a test  
technician, or external logic circuitry to initiate reset.  
On the MXD1813/MXD1818, a logic-low on RESET  
held for greater than 1.5μs asserts a reset. RESET  
deasserts following a 100ms minimum reset timeout  
Negative-Going V  
Transients  
CC  
In addition to issuing a reset to the μP during power-up,  
power-down, and brownout conditions, these devices are  
relatively immune to short-duration, negative-going V  
transients (glitches).  
CC  
Maxim Integrated  
5  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Functional Diagram  
MXD1810  
MXD1812  
MXD1815  
MXD1817  
MXD1811  
MXD1816  
V
CC  
V
CC  
RESET  
RESET  
GENERATOR  
RESET  
OR  
RESET  
GENERATOR  
RESET  
V
REF  
V
REF  
Figure 1. Functional Diagram, Push-Pull Output  
Figure 2. Functional Diagram, Open-Drain Active-Low Output  
The Typical Operating Characteristics show the Maximum  
Transient Duration vs. Reset Threshold Overdrive for  
which reset pulses are not generated. The graph shows  
MXD1813  
MXD1818  
the maximum pulse width that a negative-going V  
CC  
transient may typically have without issuing a reset signal.  
As the amplitude of the transient increases, the maximum  
allowable pulse width decreases.  
V
CC  
MR  
Ensuring a Valid Reset Output Down to  
MONITOR  
V
= 0  
CC  
When V  
falls below the minimum operating voltage,  
CC  
RESET  
RESET  
GENERATOR  
push-pull-structured reset sinking (or sourcing) capabili-  
ties decrease dramatically. High-impedance CMOSlogic  
inputs connected to the RESET/RESET pin can drift to  
indeterminate voltages. This does not present a problem  
in most cases, since most μPs and circuitry do not operate  
V
REF  
at V  
below +1V. For MXD1810/MXD1815 applications  
CC  
where RESET must be valid down to V  
= 0, adding  
CC  
a pulldown resistor between RESET and GND removes  
stray leakage currents, holding RESET low (Figure 8).  
The pulldown resistor value is not critical; 100kΩ is large  
enough not to load RESET and small enough to pull  
RESET low. For MXD1812/ MXD1817 applications where  
Figure 3. Functional Diagram, Open-Drain Active-Low Output  
with Manual Reset Detection  
Maxim Integrated  
6  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
V
CC  
V
V
CC  
TH  
V
MXD1813  
MXD1818  
CC  
t
RP  
RESET  
RESET  
V
CC(MIN)  
RESET  
GND  
MANUAL  
t
RESET  
RP  
RESET  
Figure 4. Power-Up Reset Timing Diagram  
Figure 5. Push-Button Manual Reset  
V
t
CC  
PBRST  
t
PBRST  
(OPEN)  
SWITCH BOUNCE  
EXTERNAL  
PUSH BUTTON  
(CLOSED)  
RESET  
Figure 6. Manual Reset Timing Diagram  
RESET must be valid to V  
= 0, a 100kΩ pullup resistor  
condition when the supply voltage drops below the  
CC  
between RESET and V  
holds RESET high when V  
minimum V , but will drift to a nonactive level due to  
CC  
CC  
CC  
falls below the minimum operating voltage (Figure 9).  
the pullup resistor and the reduced sinking capability of  
the open-drain output. Therefore, these devices are not  
recommended for applications where the RESET pin is  
The MXD1811/MXD1813/MXD1816/MXD1818 have  
open-drain, active-low outputs with a pullup resistor  
included internal to the devices. While using these  
devices, RESET will most likely not maintain an active  
required to be valid at V  
= 0.  
CC  
Maxim Integrated  
7  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Table 1. Device Marking Codes  
V
CC  
TOP MARK  
PART  
SOT23  
FZIV  
SC70  
AEK  
AHU  
AHT  
AHW  
AEL  
AHV  
AHY  
AHX  
AEM  
AEN  
AIA  
V
CC  
MXD1810_R46  
MXD1810_R44  
MXD1810_R41  
MXD1811_R46  
MXD1811_R44  
MXD1811_R41  
MXD1812_R46  
MXD1812_R44  
MXD1812_R41  
MXD1813_R46  
MXD1813_R44  
MXD1813_R41  
MXD1815_R31  
MXD1815_R29  
MXD1815_R26  
MXD1815_R23  
MXD1815_R22  
MXD1816_R31  
MXD1816_R29  
MXD1816_R26  
MXD1816_R23  
MXD1816_R22  
MXD1817_R31  
MXD1817_R29  
MXD1817_R26  
MXD1817_R23  
MXD1817_R22  
MXD1818_R31  
MXD1818_R29  
MXD1818_R26  
MXD1818_R23  
MXD1818_R22  
V
CC  
FZKD  
FZKC  
FZKF  
FZIW  
FZKE  
FZKH  
FZKG  
FZIX  
MXD1811  
MXD1816  
µP  
RESET  
RESET  
GND  
GND  
Figure 7. Interfacing to Microprocessors with Bidirectional  
Reset Pins  
FZIY  
FZKJ  
FZKI  
AHZ  
AIE  
FZKN  
FZIZ  
V
CC  
AEO  
AID  
FZKM  
FZKL  
FZKK  
FZKR  
FZKQ  
FZKP  
FZKO  
FZJA  
FZJB  
FZKV  
FZKU  
FZKT  
FZKS  
FZKY  
FZKX  
FZJC  
FZKW  
FZJE  
V
CC  
AIC  
V
CC  
AIB  
MXD1810  
AII  
MXD1815  
µP  
RESET  
RESET  
AIH  
AIG  
AIF  
GND  
R
PULLDOWN*  
GND  
AEP  
AEQ  
AIM  
AIL  
*MXD1810/MXD1815 ONLY  
Figure 8. Ensuring Valid RESET Output Down to V  
(MXD1810/MXD1815 only)  
= 0  
CC  
AIK  
AIJ  
AIP  
V
CC  
AIO  
AER  
AIN  
V
CC  
R
PULLUP*  
AEV  
V
CC  
MXD1812  
MXD1817  
µP  
RESET  
RESET  
GND  
GND  
*MXD1812/MXD1817 ONLY  
Figure 9. Ensuring Valid RESET Output Down to V  
(MXD1812/MXD1817 only)  
= 0  
CC  
Maxim Integrated  
8  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Selector Guide  
OPEN-DRAIN  
2.5V/3.0V/3.3V  
SYSTEMS  
PUSH-PULL  
OPEN-DRAIN  
PUSH-PULL  
RESET  
RESET WITH  
PUSHBUTTON  
DETECT  
PART  
5V SYSTEMS  
RESET  
RESET  
MXD1810  
MXD1811  
MXD1812  
MXD1813  
MXD1815  
MXD1816  
MXD1817  
MXD1818  
Ordering Information (continued)  
Reset Threshold Table  
PART  
TEMP RANGE  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
-40°C to +105°C  
PIN-PACKAGE  
3 SOT23  
3 SC70  
SUFFIX  
TYP. RESET  
THRESHOLD (V)*  
PART  
(_ _)  
46  
44  
41  
31  
29  
26  
23  
22  
MXD1811UR_ _-T  
MXD1811XR_ _-T  
MXD1812UR_ _-T  
MXD1812XR_ _-T  
MXD1813UR_ _-T  
MXD1813XR_ _-T  
MXD1815UR_ _-T  
MXD1815XR_ _-T  
MXD1816UR_ _-T  
MXD1816XR_ _-T  
MXD1817UR_ _-T  
MXD1817XR_ _-T  
MXD1818UR_ _-T  
MXD1818XR_ _-T  
MXD1810–MXD1813  
MXD1810–MXD1813  
MXD1810–MXD1813  
MXD1815–MXD1818  
MXD1815–MXD1818  
MXD1815–MXD1818  
MXD1815–MXD1818  
MXD1815–MXD1818  
4.62  
4.37  
4.12  
3.06  
2.88  
2.55  
2.31  
2.18  
3 SOT23  
3 SC70  
3 SOT23  
3 SC70  
3 SOT23  
3 SC70  
3 SOT23  
3 SC70  
*Factory-trimmed reset thresholds are nominally ±1.5% at  
room temperature.  
3 SOT23  
3 SC70  
Chip Information  
3 SOT23  
3 SC70  
PROCESS TECHNOLOGY: BiCMOS  
The MXD1810–MXD1813/MXD1815–MXD1818 are available  
with factory-set V reset thresholds from +2.18V to +3.06V  
CC  
Package Information  
(MXD1815–MXD1818) and +4.12V to +4.62V (MXD1810–  
MXD1813). Choose the desired reset-threshold suffix from the  
Reset Threshold Table and insert it in place of the “_ _”  
following “R” in the part number. All devices are available in  
tape-and-reel only in 2500 unit increments. Other threshold  
voltages may be available. Contact factory for availability.  
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.  
Devices are available in both leaded and lead(Pb)-free  
packaging. Specify lead-free by replacing “-T” with “+T”  
when ordering.  
PACKAGE  
TYPE  
PACKAGE OUTLINE  
CODE  
LAND  
PATTERN NO.  
NO.  
3 SC70  
X3-2  
21-0075  
21-0051  
90-0208  
90-0179  
3 SOT23  
U3-1  
Maxim Integrated  
9  
www.maximintegrated.com  
MXD1810–MXD1813/  
MXD1815–MXD1818  
Low-Power μP Reset Circuits in 3-Pin  
SC70/SOT23  
Revision History  
REVISION  
NUMBER  
REVISION  
DATE  
PAGES  
CHANGED  
DESCRIPTION  
1
12/05  
11/14  
Miscellaneous updates  
1,9-11  
No /V OPN in Ordering Information, removed automotive reference from  
Applications section; updated Packaging Information  
2
1, 10, 11  
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.  
2014 Maxim Integrated Products, Inc.  
10  

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