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MAX811S

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by Ray

MSKSEMI Supervisor and Reset ICs, SOT-143. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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MAX811S

MSKSEMI · Supervisor and Reset ICs · SOT-143

MAX811S from MSKSEMI, in a SOT-143. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground / power negative terminal. Common return for VCC and RESET output.
2 RESET output Active-low reset output (open-drain style push-pull). Driven low when VCC < Vth (2.93 V for MAX811S) or when MR is low; released high after Trp (~500 ms typ) once VCC recovers. VOL ≤ 0.5 V at ISINK=3.2 mA; VOH ≥ 0.8·VCC at ISOURCE=500 uA.
3 MR input Active-low manual reset / enable control input. Driving MR low forces RESET low; releasing MR high (VIH ≥ 0.7·VCC) allows normal operation. Minimum pulse width 10 us. Has internal pull-up current (~1-25 uA).
4 VCC power_in Positive supply input, 1.0 V to 6.0 V operating range (6.5 V absolute max). This is the monitored rail; RESET asserts when VCC falls below Vth = 2.93 V ±2.5% (MAX811S variant). Quiescent current ~2 uA typ.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOT-143
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • MAX811S

CAD (KiCad official)

  • Symbol: MAX811S
  • Footprint: Package_TO_SOT_SMD:SOT-143
  • 3D model: SOT-143 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MSKSEMI datasheet (6 pp, sha256 583e61fb1e979f29, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF