The MAX6361/MAX6363/MAX6364 supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery control functions in microprocessor (µP) systems. The circuits significantly improve system reliability and accuracy compared to that obtainable with separate ICs or discrete components. Their functions include µP reset, backup-battery switchover, and power failure warning. The MAX6361/MAX6363/MAX6364 operate from supply voltages as low as +1.2V. The factory preset reset threshold voltage ranges from 2.32V to 4.63V (see Ordering Information). These devices provide a manual reset input (MAX6361), battery-on output (MAX6363), and an auxiliary adjustable reset input (MAX6364). In addition, each part type is offered in three reset output versions: an active-low push-pull reset, an active-low open-drain reset, and an active-high push-pull reset (see Selector Guide at end of data sheet).
The MAX6361, MAX6363 and MAX6364 are low‑power supervisory circuits designed for microprocessor systems. They operate from supply voltages as low as +1.2 V and provide functions such as manual reset, battery‑on output and an adjustable reset input. The devices are offered in three reset‑output versions (active‑low push‑pull, active‑low open‑drain, active‑high push‑pull) and are packaged in a 6‑pin SOT‑23.
The datasheet includes absolute maximum ratings, electrical characteristics, typical operating curves, pin descriptions, ordering information and a selector guide for choosing reset‑threshold voltage options. It also describes backup‑battery switchover behavior and how to use the manual reset and reset‑in inputs.
| Operating Supply Voltage Range | 0 V to 5.5 V |
|---|---|
| Minimum Operating Voltage | 1.2 V |
| Temperature Range (operating) | -40 °C to +85 °C |
| Reset Threshold (suffix 46) | 4.50 V to 4.63 V |
The devices operate from supply voltages as low as +1.2 V.
All three devices are supplied in a 6‑pin SOT‑23 package.