The ADM6326/ADM6328/ADM6346/ADM6348 are ultralow power, 3-lead, SOT-23 microprocessor reset circuits with reset thresholds available in increments from 2.2 V to 4.63 V.
The ADM6326, ADM6328, ADM6346 and ADM6348 are ultralow‑power, 3‑lead SOT‑23 microprocessor reset circuits designed for telecommunications, desktop, notebook and portable equipment. They provide accurate monitoring of multiple voltage rails, glitch immunity, and two reset output options (push‑pull or open‑drain) to protect microprocessor systems during power‑up, power‑down, and brown‑out conditions.
Key specifications include an operating voltage range of 1.0 V to 5.5 V, input current as low as 0.5 µA, a minimum reset timeout of 100 ms, and operation over –40 °C to +85 °C. The datasheet also lists pin configurations, typical performance curves, thermal resistance, and an ordering guide for the various threshold‑voltage options.
| Operating voltage range (VCC) | 1.0 V – 5.5 V |
|---|---|
| Input current (IC) | 0.5 µA typical, 1.0 µA max |
| Minimum reset timeout period | 100 ms |
| Reset output low voltage (VOL) | 0.3 V (push‑pull) |
| Reset output high voltage (VOH) | 0.8 × VCC |
| Operating temperature range | –40 °C to +85 °C |
| Thermal resistance (θJA) | 270 °C/W |
| Absolute maximum supply voltage | –0.3 V to +6 V |
The device guarantees a minimum reset timeout of 100 ms.
Both devices provide an active‑low push‑pull reset output.
They operate from –40 °C up to +85 °C.
Typical input current is 0.5 µA.