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MAX6351LSUT+ PDF预览

MAX6351LSUT+

更新时间： 2024-10-29 06:38:51
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Power Supply Support Circuit,

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MAX6351LSUT+ 数据手册

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19-1508; Rev 6; 12/05  
Dual/Triple-Voltage  
µP Supervisory Circuits  
General Description  
Features  
The MAX6351–MAX6360 microprocessor (µP) supervi-  
sors with multiple reset voltages significantly improve sys-  
tem reliability and accuracy compared to separate ICs or  
discrete components. If any input supply voltage drops  
below its associated preset threshold, all reset outputs  
are asserted. In addition, the outputs are valid as long as  
either input supply voltage remains greater than +1.0V.  
♦ Precision Monitoring of Multiple +1.8V, +2.5V,  
+3.0V, +3.3V, and +5V Power-Supply Voltages  
♦ Precision Factory-Set Power-Supply  
Reset Thresholds  
♦ 20µA Supply Current  
♦ 100ms min Power-On Reset Pulse Width  
All devices in this series have an active-low debounced  
manual reset input. In addition, the MAX6358/MAX6359/  
MAX6360 offer a watchdog-timer input with a 46.4s start-  
up timeout period and a 2.9s timeout period. The  
MAX6355/MAX6356/MAX6357 offer an additional voltage  
monitor input to monitor a third voltage.  
♦ Debounced TTL/CMOS-Compatible  
Manual-Reset Input  
♦ Watchdog Timer  
46.4s Startup Timeout  
2.9s Normal Timeout  
The MAX6351 features two active-low, push-pull reset  
outputs, one is referenced to V 1 and the other is refer-  
CC  
♦ Fully Guaranteed Over Temperature  
enced to V 2. The MAX6353/MAX6356/MAX6359 offer  
CC  
♦ Guaranteed RESET Valid to V 1 = 1V or  
CC  
an active-low, push-pull reset output referenced to V 1.  
CC  
V
2 = 1V  
CC  
The MAX6354/MAX6357/MAX6360 offer an active-low,  
push-pull reset output referenced to V 2.  
CC  
♦ Power-Supply Transient Immunity  
All these devices are offered with a wide variety of voltage  
threshold levels, as shown in the Voltage Threshold  
Levels table. They are available in 5- and 6-pin SOT23  
packages and operate over the extended (-40°C to  
+85°C) temperature range.  
♦ No External Components for Dual-Voltage  
Systems  
♦ Small 5- and 6-Pin SOT23 Packages  
♦ Low Cost  
__________Voltage Threshold Levels  
Applications  
PART NO.  
SUFFIX  
(_ _)  
V
1 NOMINAL  
VOLTAGE  
V
2 NOMINAL  
VOLTAGE  
CC  
CC  
Computers  
Controllers  
Intelligent Instruments  
Multivoltage Systems  
THRESHOLD (V)  
4.63  
THRESHOLD (V)  
3.08  
LT  
LS  
LR  
Portable/Battery-Powered  
Equipment  
4.63  
2.93  
4.63  
2.63  
Ordering Information  
MT  
MS  
MR  
TZ  
4.38  
3.08  
PART*  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
6 SOT23-6  
5 SOT23-5  
5 SOT23-5  
5 SOT23-5  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
4.38  
2.93  
MAX6351_ _UT-T  
MAX6352_ _UK-T  
MAX6353_ _UK-T  
MAX6354_ _UK-T  
MAX6355_ _UT-T  
MAX6356_ _UT-T  
MAX6357_ _UT-T  
MAX6358_ _UT-T  
MAX6359_ _UT-T  
MAX6360_ _UT-T  
4.38  
2.63  
3.08  
2.32  
TY  
3.08  
2.19  
TW  
TV  
3.08  
1.67  
3.08  
1.58  
SZ  
2.93  
2.32  
SY  
SW  
SV  
UW  
UV  
RW  
RV  
2.93  
2.19  
2.93  
1.67  
2.93  
1.58  
*The _ _ are placeholders for the threshold voltage levels of the  
devices. Substitute the part number suffix in the Voltage Thres-  
hold Levels table for the desired voltage level. All devices are  
available in tape-and-reel only. There is a 2500 piece minimum  
order increment for the SOT package.  
Devices are available in both leaded and lead-free packaging.  
Specify lead-free by replacing “-T” with “+T” when ordering.  
2.78  
1.67  
2.78  
1.58  
2.63  
1.67  
2.63  
1.58  
Note: Standard versions are shown in bold. Sample stock is gen-  
erally held on the standard versions only. Contact factory for avail-  
ability.  
Pin Configurations appear at end of data sheet.  
Selector Guide appears at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...11

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