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MIC812UUY PDF预览

MIC812UUY

更新时间: 2024-09-17 05:13:19
品牌 Logo 应用领域
美国微芯 - MICROCHIP 光电二极管
页数 文件大小 规格书
6页 97K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4

MIC812UUY 数据手册

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MIC811/812  
Micrel, Inc.  
MIC811/812  
Microprocessor Reset Circuits  
Final Information  
General Description  
Features  
The MIC811 and MIC812 are inexpensive microprocessor  
supervisory circuit that monitors power supplies in micropro-  
cessor based systems.  
• Precision voltage monitor for 3V, 3.3V or 5V power  
supplies  
• /RESET remains valid with V as low as 1.4V  
CC  
• <15µA supply current  
The function of this device is to assert a reset if either the  
power supply drops below a designated reset threshold level  
or /MR is forced low. Several different reset threshold levels  
are available to accommodate 3V, 3.3V or 5V powered  
systems.  
• 140ms minimum reset pulse width available  
• Manual reset input  
• Available in 4-pin SOT-143 package  
Applications  
The MIC811 has an active low /RESET output, while the  
MIC812offersanactivehighRESEToutput.Theresetoutput  
is guaranteed to remain asserted for a minimum of 140ms  
• Portable equipment  
• Intelligent instruments  
• Critical microprocessor power monitoring  
• Printers/computers  
after V has risen above the designed reset threshold level.  
CC  
Having a push-pull output stage, MIC811/812 does not  
require a pull-up resistor at the output. The MIC811/812  
comes in a 4-pin SOT-143 package.  
• Embedded controllers  
If a microprocessor voltage supervisor with an open-drain  
output stage is needed, see MIC6315.  
Ordering Information  
Standard  
Pb-Free  
Threshold  
Operating  
Part Number  
Marking  
KL  
Part Number Marking  
Voltage  
4.63  
4.38  
4.00  
3.00  
3.08  
2.93  
2.63  
4.63  
4.38  
4.00  
3.00  
3.08  
2.93  
2.63  
Temp. Range  
Package  
MIC811LU  
MIC811MU  
MIC811JU  
MIC811UU  
MIC811TU  
MIC811SU  
MIC811RU  
MIC812LU  
MIC812MU  
MIC812JU  
MIC812UU  
MIC812TU  
MIC812SU  
MIC812RU  
MIC811LUY  
MIC811MUY  
MIC811JUY  
MIC811UUY  
MIC811TUY  
MIC811SUY  
MIC811RUY  
MIC812LUY  
MIC812MUY  
MIC812JUY  
MIC812UUY  
MIC812TUY  
MIC812SUY  
MIC812RUY  
KL  
KM  
KJ  
KU  
KT  
KS  
KR  
LL  
–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  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
4-lead SOT-143  
KM  
KJ  
KU  
KT  
KS  
KR  
LL  
LM  
LJ  
LM  
LJ  
LU  
LU  
LT  
LS  
LR  
LT  
LS  
LR  
*Under bar symbol (_) may not be to scale.  
Typical Application  
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
February 2005  
1
MIC811/812  

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