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In Production
Driver Type |
Supervisor |
Min Operating Voltage (V) |
1 |
Max Operating Voltage (V) |
5.5 |
Nominal Reset Voltage Min |
2.63 |
Nominal Reset Voltage Max |
4.63 |
Watchdog Timer |
No |
Manual Reset |
Yes |
Power Fail |
No |
Min Operating Ambient Temperature (°C) |
-40 |
Max Operating Ambient Temperature (°C) |
85 |
The MIC811 and MIC812 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor based systems.
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.
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 designed reset threshold level. Having a push-pull output stage, the MIC811/812 does not require a pull-up resistor at the output. The MIC811/812 comes in a 4-pin SOT-143 package.
If a microprocessor voltage supervisor with an open-drain output stage is needed, see MIC6315.
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