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MAX6750KA20+

更新时间： 2024-09-13 06:20:03
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美信 - MAXIM 信息通信管理光电二极管
页数 文件大小 规格书
14页 604K
描述
Power Management Circuit, Adjustable, 1 Channel, BICMOS, PDSO8, LEAD FREE, MO-178BA, SOT-23, 8 PIN

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MAX6750KA20+ 数据手册

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19-2530; Rev 3; 12/05  
µP Reset Circuits with Capacitor-Adjustable  
Reset/Watchdog Timeout Delay  
General Description  
Features  
The MAX6746–MAX6753 low-power microprocessor  
(µP) supervisory circuits monitor single/dual system  
supply voltages from 1.575V to 5V and provide maxi-  
mum adjustability for reset and watchdog functions.  
♦ Factory-Set Reset Threshold Options from 1.575V  
to 5V in ~100mV Increments  
♦ Adjustable Reset Threshold Options  
♦ Single/Dual Voltage Monitoring  
These devices assert a reset signal whenever the V  
CC  
supply voltage or RESET IN falls below its reset thresh-  
old or when manual reset is pulled low. The reset output  
♦ Capacitor-Adjustable Reset Timeout  
♦ Capacitor-Adjustable Watchdog Timeout  
♦ Min/Max (Windowed) Watchdog Option  
♦ Manual Reset Input Option  
remains asserted for the reset timeout period after V  
CC  
and RESET IN rise above the reset threshold. The reset  
function features immunity to power-supply transients.  
The MAX6746–MAX6753 have ±±2 factory-trimmed  
reset threshold voltages in approximately 100mV incre-  
ments from 1.575V to 5.0V and/or adjustable reset  
threshold voltages using external resistors.  
♦ Guaranteed RESET Valid for V  
♦ 3.7µA Supply Current  
≥ 1V  
CC  
The reset and watchdog delays are adjustable with  
external capacitors. The MAX6746–MAX6751 contain a  
watchdog select input that extends the watchdog time-  
out period by 1±8x. The MAX675±/MAX6753 contain a  
window watchdog timer that looks for activity outside an  
expected window of operation.  
♦ Push-Pull or Open-Drain RESET Output Options  
♦ Power-Supply Transient Immunity  
♦ Small 8-Pin SOT23 Packages  
The MAX6746–MAX6753 are available with a push-pull  
or open-drain active-low RESET output. The MAX6746–  
MAX6753 are available in an 8-pin SOT±3 package and  
are fully specified over the automotive temperature  
range (-40°C to +1±5°C).  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +1±5°C  
-40°C to +1±5°C  
-40°C to +1±5°C  
-40°C to +1±5°C  
-40°C to +1±5°C  
-40°C to +1±5°C  
-40°C to +1±5°C  
-40°C to +1±5°C  
PIN-PACKAGE  
8 SOT±3-8  
8 SOT±3-8  
8 SOT±3-8  
8 SOT±3-8  
8 SOT±3-8  
8 SOT±3-8  
8 SOT±3-8  
8 SOT±3-8  
MAX6746KA_ _-T  
MAX6747KA_ _-T  
MAX6748KA-T  
Applications  
MAX6749KA-T  
Medical Equipment  
Automotive  
Embedded Controllers  
Critical µP Monitoring  
Set-Top Boxes  
MAX6750KA_ _-T  
MAX6751KA_ _-T  
MAX6752KA_ _-T  
MAX6753KA_ _-T  
Intelligent Instruments  
Portable Equipment  
Computers  
Battery-Powered  
Computers/Controllers  
Note: “_ _” represents the two number suffix needed when  
ordering the reset threshold voltage value for the  
MAX6746/MAX6747 and MAX6750–MAX6753. The reset  
threshold voltages are available in approximately 100mV incre-  
ments. Table 2 contains the suffix and reset factory-trimmed  
voltages. All devices are available in tape-and-reel only. There  
is a 2500-piece minimum order increment for standard ver-  
sions (see Table 3). Sample stock is typically held on standard  
versions only. Nonstandard versions require a minimum order  
increment of 10,000 pieces. Contact factory for availability.  
Pin Configurations  
TOP VIEW  
RESET IN (MR)  
SWT  
1
2
3
4
8
7
6
5
V
CC  
RESET  
WDI  
MAX6746–  
MAX6751  
Devices are available in both leaded and lead-free packaging.  
Specify lead-free by replacing “-T” with “+T” when ordering.  
SRT  
GND  
WDS  
Selector Guide appears at end of data sheet.  
SOT23-8  
( ) ARE FOR MAX6746 AND MAX6747 ONLY.  
Typical Operating Circuit appears at end of data sheet.  
Pin Configurations continued 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...14

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