The MAX6378UR44+ is listed as Active by Analog Devices, meaning the manufacturer continues to support it for new and existing designs.
Threshold and reset behaviour for system monitoring
The reset is Active Low, meaning the output goes low during undervoltage and releases (goes high) when the rail recovers above the threshold. The output stage is Push-Pull (Totem Pole), so it can both source and sink current without needing an external pull-up resistor. This simplifies the connection to the reset input of a microcontroller or logic device.
Housed in a 3-pin SOT-23-3 (also known as TO-236-3, SC-59), the package is small and surface-mount. The SOT-23-3 footprint is widely used and easy to hand-solder or reflow with a hot-air station — the three pins are clearly spaced, and pin 1 is marked on the package body. The part is suitable for battery-powered or low-power systems where a precise voltage monitor is needed.