The Analog Devices MAX6834GXRD2+T is a single-channel voltage supervisor that monitors a 1.665 V rail and asserts a reset signal when the supply drops below that threshold.
The threshold is set at 1.665 V. The open-drain output lets you pull up to whatever voltage the reset input of your processor expects.
SC-70-3 package — field-fit note
It comes in a three-pin SC-70 package (SC-70-3, also called SOT-323). The pinout is straightforward: ground, reset output, and supply input.
Not rated for under-hood or engine-bay temperatures, but fine for most indoor and sheltered outdoor gear.
