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CAT811STBI-GT3-MS
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MSKSEMI Supervisor and Reset ICs, SOT-143. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+43@@ -0,0 +1,43 @@+# CAT811STBI-GT3-MS++**MSKSEMI** · Supervisor and Reset ICs · SOT-143++CAT811STBI-GT3-MS 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 reference for the device. |+| 2 | RESET | output | Active-low push-pull reset output. Held low (VOL ~0.03V @ 1.2mA sink) when VIN is below the detect level (VDET = 2.93V for -S variant); driven high (VOH ~ VIN-0.05V @ 1.2mA source) 240ms after VIN rises above VDET. Guaranteed low while VIN > 1V. |+| 3 | MR | input | Active-low manual reset input. Pulling MR below VIL (0.3 x VIN) forces RESET low; MR must be above VIH (0.7 x VIN) for normal operation. Typically driven by a push button to GND. |+| 4 | VIN | power_in | Supply input and monitored voltage node. Operating range 1V to 6V (absolute max -0.3V to 8V). Compared against internal VDET = 2.93V for the -S variant. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MSKSEMI |+| Package | SOT-143 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `CAT811STBI-GT3-MS`++## CAD (KiCad official)++- Symbol: `CAT811STBI-GT3-MS`+- 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](docs/cat811stbi-gt3-ms-datasheet.pdf) (7 pp, sha256 `3c4bce5324899f80`, retrieved 2026-08-17, tier: lcsc)+- **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](docs/cat811stbi-gt3-ms-datasheet.pdf)
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