WS3085W

@@ -0,0 +1,50 @@+# WS3085W++**GEC** · RS-485/RS-422 ICs · SOP-8++WS3085W from GEC, in a SOP-8. 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 | RO | output | Receiver output. When the receiver is enabled and V(A)-V(B) > -50mV, RO drives high; when V(A)-V(B) < -200mV, RO drives low. Fail-safe: outputs high when inputs are open or shorted. |+| 2 | /RE | input | Receiver output enable (active low). RO is enabled when /RE is low and disabled (high-Z) when /RE is high. With /RE=high and DE=low the chip enters low-power shutdown mode (typ. 1.8 µA). |+| 3 | DE | input | Driver output enable (active high). When DE is high the driver is enabled; when DE is low the driver outputs are high impedance. With /RE=high and DE=low the chip enters shutdown mode. |+| 4 | DI | input | Driver input. When DI is low the non-inverting driver output (A) is forced low and the inverting output (B) is forced high; when DI is high, A is forced high and B is forced low. VIH ≥ 2.0V, VIL ≤ 0.8V. |+| 5 | GND | power_in | Ground reference for the device. |+| 6 | A | bidirectional | RS-485/RS-422 bus interface: non-inverting driver output and non-inverting receiver input. Provides ±15kV HBM / ±12kV IEC 61000-4-2 contact-discharge ESD protection. Absolute range -8V to +13V. |+| 7 | B | bidirectional | RS-485/RS-422 bus interface: inverting driver output and inverting receiver input. Provides ±15kV HBM / ±12kV IEC 61000-4-2 contact-discharge ESD protection. Absolute range -8V to +13V. |+| 8 | VCC | power_in | Positive supply, 3.0V to 5.25V (nominal 3.3V/5V). Bypass to GND with a 0.1 µF ceramic capacitor. Typical ICC 450 µA (max 600 µA) no-load; 1.8 µA typ in shutdown. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | GEC |+| Package | SOP-8 |+| Category | Comm/UART |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `WS3085WEESA`++## CAD (KiCad official)++- Symbol: `WS3085W`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [GEC datasheet](docs/ws3085w-datasheet.pdf) (10 pp, sha256 `83e24e937c025f43`, 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/ws3085w-datasheet.pdf)

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