Features: Standard Reset Threshold voltage: 3.08VCustom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp.No external components requiredManual-Reset inputRESET (LM3704) or RESET (LM3705) outputsPrecision supply voltage monit...
LM3705: Features: Standard Reset Threshold voltage: 3.08VCustom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp.No external compone...
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Power on Reset | Yes |
Watchdog | No |
Power Fail Input | Yes |
Manual Reset | Yes |
Reset Timeout Period | 200 ms |
On/Off Pin | Yes |
Error Flag | Yes |
Input Min Voltage | 1.2 Volt |
Input Max Voltage | 5.5 Volt |
RegType | Supervisor |
Temperature Min | -40 deg C |
Temperature Max | 85 deg C |
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The LM3704/LM3705 series of microprocessor supervisory circuits provide the maximum flexibility for monitoring power supplies and battery controlled functions in systems without backup batteries. The LM3704/LM3705 series are available in MSOP-10 and 9-bump micro SMD packages.
Built-in features include the following: Reset: Reset is asserted during power-up, power-down, and brownout conditions. RESET is guaranteed down t o VCC of 1.0V. Manual Reset Input: An input that asserts reset when pulled low.
Power-Fail Input: A 1.225V threshold detector for power fail warning, or to monitor a power supply other than VCC. Low Line Output: This early power failure warning indicator goes low when the supply voltage drops to a value which is 2% higher than the reset threshold voltage.