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MAX803_EXR/V+T

更新时间: 2024-11-17 02:50:07
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美信 - MAXIM /
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8页 870K
描述
3-Pin Microprocessor Reset Circuits

MAX803_EXR/V+T 数据手册

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MAX803/MAX809/  
MAX810  
3-Pin Microprocessor Reset Circuits  
General Description  
Benefits and Features  
● Precision Monitoring of +2.5V, +3V, +3.3V, and  
+5V Power-Supply Voltages  
The MAX803/MAX809/MAX810 are microprocessor (μP)  
supervisory circuits used to monitor the power supplies  
in μP and digital systems. They provide excellent circuit  
reliability and low cost by eliminating external components  
and adjustments when used with +5V, +3.3V, +3.0V, or  
+2.5V powered circuits.  
● Fully Specified Over Temperature  
● Available in Three Output Configurations  
• Open-Drain RESET Output (MAX803)  
• Push-Pull RESET Output (MAX809)  
• Push-Pull RESET Output (MAX810)  
● 140ms (min) Power-On-Reset Pulse Width  
● 12μA Supply Current  
Guaranteed Reset Valid to V  
● Power Supply Transient Immunity  
● No External Components  
These circuits perform a single function: they assert a  
reset signal whenever the V  
below a preset threshold, keeping it asserted for at least  
supply voltage declines  
CC  
= +1V  
CC  
140ms after V has risen above the reset threshold.  
CC  
Reset thresholds suitable for operation with a variety of  
supply voltages are available.  
● 3-Pin SC70 and SOT23 Packages  
● AEC-Q100 Qualified. Refer to Ordering Information  
The MAX803 has an open-drain output stage, while the  
MAX809/MAX810 have push-pull outputs. The MAX803’s  
open-drain RESET output requires a pullup resistor that  
for Specific /V Versions.  
Selector Guide and Ordering Information appear at end of data  
sheet.  
can be connected to a voltage higher than V . The  
CC  
MAX803/MAX809 have an active-low RESET output,  
while the MAX810 has an active-high RESET output. The  
reset comparator is designed to ignore fast transients on  
V
, and the outputs are guaranteed to be in the correct  
CC  
Typical Operating Circuit  
logic state for V  
down to 1V.  
CC  
V
CC  
Low supply current makes the MAX803/MAX809/MAX810  
ideal for use in portable equipment. The MAX803 is  
available in a 3-pin SC70 package, and the MAX809/  
MAX810 are available in 3-pin SC70 or SOT23 packages.  
V
V
CC  
CC  
R
*
PULLUP  
MAX803  
MAX809  
µP  
RESET  
INPUT  
RESET  
Applications  
Computers  
GND  
GND  
Controllers  
● Intelligent Instruments  
● Critical μP and μC Power Monitoring  
● Portable/Battery-Powered Equipment  
Automotive  
*MAX803 ONLY  
19-0344; Rev 11; 10/17  

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