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Part Number: MIC811
Description: The MIC811/MIC812 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor bas...
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MIC811
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DataSheet
General Description
MIC811 General Description
The MIC811/MIC812 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor based systems.
The function of these devices 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 accomodate 3V, 3.3V or 5V powered systems.
The MIC811 has an active low RESET output, while the MIC812 offers an active high RESET output. The reset output is guaranteed to remain asserted for a minimum of 140ms after VCC has risen above the designated reset threshold level. The MIC811/MIC812 come in a 4- pin SOT-143 package.
MIC811 Maximum Ratings
Terminal Voltage
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V
MR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V)
Input Current, VCC, MR . . . . . . . . . . . . . . . . . . . . . . . 20mA
Output Current, RESET, RESET . . . . . . . . . . . . . . . . . .20mA
Rate of Rise, VCC . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 100V/s
Operating Temperature Range
MIC81--U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . .-65°C to 150°C
Lead Temperature (Soldering - 10 sec.) . . . . . . . . . . . 300°C
Power Dissipation (TA = +70°C) . . . . . . . . . . . . . . . . 320mW
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V
MR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V)
Input Current, VCC, MR . . . . . . . . . . . . . . . . . . . . . . . 20mA
Output Current, RESET, RESET . . . . . . . . . . . . . . . . . .20mA
Rate of Rise, VCC . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 100V/s
Operating Temperature Range
MIC81--U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . .-65°C to 150°C
Lead Temperature (Soldering - 10 sec.) . . . . . . . . . . . 300°C
Power Dissipation (TA = +70°C) . . . . . . . . . . . . . . . . 320mW
MIC811 Features
` RESET Remains Valid with VCC as Low as 1.4V
` Precision Voltage Monitor for 3V, 3.3V or 5V Power Supplies
` Available in 4-Pin SOT-143 Package
` <15A Supply Current
` 140ms Minimum Reset Pulse Width
` Manual Reset Input
` Precision Voltage Monitor for 3V, 3.3V or 5V Power Supplies
` Available in 4-Pin SOT-143 Package
` <15A Supply Current
` 140ms Minimum Reset Pulse Width
` Manual Reset Input
MIC811 Typical Application
· Portable Equipment
· Intelligent Instruments
· Critical Microprocessor Power Monitoring
· Printers/Computers
· Controllers
· Intelligent Instruments
· Critical Microprocessor Power Monitoring
· Printers/Computers
· Controllers
MIC811 Connection Diagram
MIC811MU
PDF/DataSheet Download
- Datasheet: MIC811MU
- File Size: 163285 KB
- Manufacturer: Micrel Semiconductor
- Click here to Download
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