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HG811TM4
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HGSEMI Supervisor and Reset ICs, SOT-143-4. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# HG811TM4++**HGSEMI** · Supervisor and Reset ICs · SOT-143-4++HG811TM4 from HGSEMI, in a SOT-143-4. 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 / negative supply return. |+| 2 | VRESET | output | Active-low reset output. Pulled low when VCC drops below the threshold Vth (3.08 V typ for HG811TM4) or when MR is asserted low; returns high after the Trp reset delay (500 ms typical). VOL ≤ 0.5 V at ISINK = 3.2 mA; VOH ≥ 0.8·VCC at ISOURCE = 500 µA. |+| 3 | MR | input | Manual reset / enable input, active low. Driving MR low forces VRESET low; releasing MR high starts the Trp reset delay. VIH ≥ 0.7·VCC, VIL ≤ 0.2·VCC. Minimum pulse width tMR = 10 µs. |+| 4 | VCC | power_in | Positive supply and monitored voltage input. Operating range 1.0 V to 6.0 V (absolute max 6.5 V). Quiescent current ICCH ≈ 1 µA typ, 5 µA max at VCC = 6 V with MR high. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOT-143-4 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `HG811TM4/TR`++## CAD (KiCad official)++- Symbol: `HG811TM4`+- Footprint: `Package_TO_SOT_SMD:SOT-143`+- 3D model: SOT-143-4 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/hg811tm4-datasheet.pdf) (7 pp, sha256 `a75fd3d5b03be350`, 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](docs/hg811tm4-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "hg811tm4",+ "version": "0.1.0",+ "type": "component",+ "description": "HGSEMI Supervisor and Reset ICs, SOT-143-4. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "pmic",+ "hg811tm4"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "hg811tm4.kicad_sym",+ "hg811tm4.kicad_mod",+ "hg811tm4.glb",+ "hg811tm4.step",+ "hg811tm4.lbr",+ "docs/hero.png",+ "docs/hg811tm4-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}