The MAX709 is a power-supply monitor with reset function from Maxim Integrated Products. It can be used with +5V, +3.3V or +3V power systems.
The MAX709 is a power‑supply monitor that generates a reset signal during power‑up, power‑down, and brown‑out conditions. It works with +5 V, +3.3 V, or +3 V systems and requires no external components, offering a low‑cost solution for processor reset.
The device is offered in 8‑pin DIP, uMAX, and SO packages, with various reset‑threshold options (e.g., 4.65 V, 4.40 V, 4.25 V). Typical supply current is in the picoamp range, and the reset output remains valid down to 0 V when a pull‑down resistor is added.
| Supply Current (MAX709R/S/T) | 35 pA |
|---|---|
| Reset Delay (minimum) | 140 ms |
| Package Options | 8‑pin DIP, uMAX, SO |
The reset delay is at least 140 ms.
The device is offered in 8‑pin DIP, uMAX, and SO packages.