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MAX6750

更新时间： 2024-09-13 14:57:23
品牌 Logo 应用领域
亚德诺 - ADI 复位电路微处理器
页数 文件大小 规格书
16页 1560K
描述
微处理器复位电路，提供电容可调的复位/看门狗超时周期

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中文翻译

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MAX6750 数据手册

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Click here for production status of specific part numbers.  
MAX6746–MAX6753  
μP Reset Circuits with Capacitor-Adjustable  
Reset/Watchdog Timeout Delay  
General Description  
Benefits and Features  
● Configurable Reset and Watchdog Options Enables  
Wide Variety of Applications  
The MAX6746–MAX6753 low-power microprocessor  
(μP) supervisory circuits monitor single/dual system  
supply voltages from 1.575V to 5V and provide maximum  
adjustability for reset and watchdog functions. These  
devices assert a reset signal whenever the V  
supply voltage or RESET IN falls below its reset threshold  
• Factory-Set Reset Threshold Options from 1.575V  
to 5V in ~100mV Increments  
• Adjustable Reset Threshold Options  
• Single/Dual Voltage Monitoring  
CC  
• Capacitor-Adjustable Reset Timeout  
• Capacitor-Adjustable Watchdog Timeout  
• Min/Max (Windowed) Watchdog Option  
• Manual-Reset Input Option  
or when manual reset is pulled low. The reset output  
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.  
• Push-Pull or Open-Drain RESET Output Options  
The MAX6746–MAX6753 have ±2% factory-trimmed  
reset threshold voltages in approximately 100mV  
increments from 1.575V to 5.0V and/or adjustable reset  
threshold voltages using external resistors.  
● 3.7μA Supply Current Reduces System Power  
Consumption  
● Integrated Power Supply Protection Increases  
Robustness  
The reset and watchdog delays are adjustable with  
external capacitors. The MAX6746–MAX6751 contain  
a watchdog select input that extends the watchdog  
timeout period by 128x. The MAX6752/MAX6753 contain  
a window watchdog timer that looks for activity outside an  
expected window of operation.  
• Power-Supply Transient Immunity  
• Guaranteed RESET Valid for VCC ≥ 1V  
● 8-Pin SOT23 Packages Saves Board Space  
● AEC-Q100 Qualified. Refer to Ordering Information  
for Specific /V Trim Variants  
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 SOT23 package and  
are fully specified over the automotive temperature range  
(-40°C to +125°C).  
Typical Operating Circuit  
V
IN  
MAX6749  
MAX6751  
Applications  
V
CC  
● Medical Equipment  
● Automotive  
R1  
R2  
● Intelligent Instruments  
● Portable Equipment  
● Battery-Powered Computers/Controllers  
● Embedded Controllers  
● Critical μP Monitoring  
● Set-Top Boxes  
RESET IN  
MAX674ꢀ  
V
CC  
µP  
MAX674ꢁ  
MAX675ꢂ  
MAX675ꢃ  
RESET  
RESET  
GND  
● Computers  
Selector Guide and Ordering Information appear at end of  
data sheet.  
SRT  
C
SRT  
I/O  
WDI  
SWT  
WDS  
C
SWT  
WDS = 0 FOR NORMAL MODE  
WDS = V FOR EXTENDED MODE  
CC  
19-2530; Rev 22; 9/19  
1234567...16

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