UM809/810 3-Pin Microprocessor Reset Circuits UM809/810 SOT323/SOT23-3 General Description The UM809/810 series are ultra low current, cost effective system supervisory circuits designed to monitor the power supplies in digital systems.
They provide a reset signal to the host processor when necessary, offer excellent circuit reliability & low cost by eliminating external component and adjustment when used with +5V, +3.
3V, +3.
0V or other voltage powered circuits.
The reset output is driven active within 10µs of power supply falling through the reset voltage threshold.
Reset is keeping active for a minimum of 140ms after system power supply has risen above the reset threshold.
Reset threshol...

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