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MAX6333UR_D_/V-T

更新时间： 2024-11-09 01:07:55
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美信 - MAXIM /
页数 文件大小 规格书
6页 95K
描述
3-Pin, Ultra-Low-Voltage, Low-Power μP Reset Circuits

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19-1411; Rev 3; 6/12  
3-Pin, Ultra-Low-Voltage, Low-Power  
µP Reset Circuits  
2/MAX634  
General Description  
Features  
The MAX6332/MAX6333/MAX6334 microprocessor (µP)  
supervisory circuits monitor the power supplies in 1.8V  
to 3.3V µP and digital systems. They increase circuit  
reliability and reduce cost by eliminating external com-  
ponents and adjustments.  
o Ultra-Low 0.7V Operating Supply Voltage  
o Low 3.3µA Supply Current  
o Precision Monitoring of 1.8V and 2.5V Power-  
Supply Voltages  
These devices perform a single function: they assert a  
o Reset Thresholds Available from 1.6V to 2.5V,  
reset signal whenever the V  
supply voltage declines  
CC  
in Approximately 100mV Increments  
below a preset threshold, keeping it asserted for a preset  
timeout period after V has risen above the reset  
o Fully Specified over Temperature  
CC  
threshold. The only difference among the three devices  
is their output. The MAX6333 (push/pull) and MAX6334  
(open-drain) have an active-low RESET output, while the  
MAX6332 (push/pull) has an active-high RESET output.  
The MAX6332/MAX6333 are guaranteed to be in the cor-  
o Three Power-On Reset Pulse Widths Available  
(1ms min, 20ms min, 100ms min)  
o Low Cost  
o Three Available Output Structures: Push/Pull  
RESET, Push/Pull RESET, Open-Drain RESET  
rect state for V  
down to 0.7V. The MAX6334 is guaran-  
CC  
teed to be in the correct state for V  
down to 1.0V.  
CC  
o Guaranteed RESET/RESET Valid to V  
= 0.7V  
CC  
The reset comparator in these ICs is designed to ignore  
fast transients on V . Reset thresholds are factory-  
CC  
(MAX6332/MAX6333)  
trimmable between 1.6V and 2.5V, in approximately  
100mV increments. There are 15 standard versions  
available (2,500 piece minimum-order quantity); con-  
tact the factory for availability of nonstandard versions  
(10,000 piece minimum-order quantity). For space-criti-  
cal applications, the MAX6332/MAX6333/MAX6334  
come packaged in a 3-pin SOT23.  
o Power-Supply Transient Immunity  
o No External Components  
o 3-Pin SOT23 Package  
o Pin Compatible with MAX809/MAX810 and  
MAX6326/MAX6327/MAX6328  
Applications  
Ordering Information  
®
Pentium II Computers  
PART  
TEMP RANGE  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
3 SOT23  
Computers  
MAX6332UR__D_-T  
MAX6333UR__D_-T  
MAX6333UR__D_/V-T  
MAX6334UR__D_-T  
Controllers  
3 SOT23  
3 SOT23  
Intelligent Instruments  
Critical µP/µC Power Monitoring  
Portable/Battery-Powered Equipment  
Automotive  
3 SOT23  
* These devices are available in factory-set V  
reset thresh-  
CC  
olds from 1.6V to 2.5V, in approximately 0.1V increments.  
Choose the desired reset threshold suffix from Table 1 and  
insert it in the blanks following “UR” in the part number.  
Factory-programmed reset timeout periods are also available.  
Insert the number corresponding to the desired nominal reset  
timeout period (1 = 1ms min, 2 = 20ms min, 3 = 100ms min) in  
the blank following “D” in the part number. There are 15 stan-  
dard versions with a required order increment of 2500 pieces.  
Sample stock is generally held on the standard versions only  
(see Selector Guide). Contact the factory for availability of non-  
standard versions (required order increment is 10,000 pieces).  
All devices available in tape-and-reel only.  
Typical Operating Circuit and Pin Configuration appear  
at end of data sheet.  
Selector Guide appears at end of data sheet.  
Devices are available in both leaded and lead-free packaging.  
Specify lead-free by replacing “-T” with “+T” when ordering.  
/V denotes an automotive qualified part.  
Pentium is a registered trademark of Intel Corp.  
1
For pricing, delivery, and ordering information, please contact Maxim Direct  
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
123456

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