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HX809M-4.38V
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HX hengjiaxing HX809M 4 38V Supervisor and Reset ICs, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# HX809M-4.38V++**HX hengjiaxing HX809M 4 38V** · Supervisor and Reset ICs · SOT-23++HX809M-4.38V from HX hengjiaxing HX809M 4 38V, in a SOT-23. 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 | Chip ground reference (0 V). Connect to system ground. |+| 2 | RESET | output | Active-low reset output. Driven low when VCC falls below the 4.38V (±2%) threshold and held low for the 350 ms (typ) reset delay after VCC recovers. VOL ≤ 0.4V at ISINK=3.2 mA; VOH ≥ VCC-1.5V at ISOURCE=800 µA (L/M/J variants). Max output current 20 mA. |+| 3 | VCC | power_in | Chip supply / monitored input voltage. Operating range 0.9V-6.0V (absolute max 6V). The internal comparator trips RESET when VCC drops below 4.38V (±2%). Has VCC transient noise immunity. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HX hengjiaxing HX809M 4 38V |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `HX809M-4.38V`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HX hengjiaxing HX809M 4 38V datasheet](docs/hx809m-4-38v-datasheet.pdf) (4 pp, sha256 `4867890d2eebb1ee`, 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/hx809m-4-38v-datasheet.pdf)
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