The ASM1233D-L/1233D/1233M are low-power, 5/3.3V µP Reset, with an active LOW, open-drain output. Maximum supply current over temperature is 15µA for 3.3V devices and 20µA for 5V devices. The ASM1233D-L/1233D/1233M generates an active LOW reset signal whenever the monitored supply is out of tolerance. A precision reference and comparator circuit monitors power supply (VCC) level. The tolerances are 5%, 10% and 15%. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 350ms to allow the power supply and system microprocessor to stabilize. The ASM1233D-L/1233D/1233M is designed with an open- drain output stage and operates over the extended industrial temperature range. These devices are available in compact SOT-223, SO-8 and TO-92 packages. Other low power products in this family include ASM1810/11/ 12/15/16/17.
The ASM1233D-L/D/M voltage supervisor monitors the supply voltage and generates an active‑LOW reset when the voltage is out of tolerance. It is intended for set‑top boxes, cellular phones, PDAs, energy‑management and embedded control systems, printers and single‑board computers.
Key features include a maximum supply current of 15 µA (3.3 V) or 20 µA (5 V), a 350 ms reset delay after power returns to tolerance, an internal 5 kΩ pull‑up, and operation over –40 °C to +85 °C. The device is available in compact SOT‑223, SO‑8 and TO‑92 packages.
| Maximum supply current (3.3 V) | 15 µA |
|---|---|
| Operating temperature range | -40 °C to +85 °C |
| Reset delay after Vcc returns to tolerance | 350 ms |
The reset output remains active for 350 ms after the supply voltage returns to tolerance.
The maximum supply current is 15 µA for devices operating at 3.3 V.
The device is available in SOT‑223, SO‑8 and TO‑92 packages.