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WS3085EESA-GEC
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GEC RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+49@@ -0,0 +1,49 @@+# WS3085EESA-GEC++**GEC** · RS-485 / RS-422 ICs · SOP-8++WS3085EESA-GEC 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 is driven high; when V(A)-V(B) < -200mV, RO is driven low. Fail-safe high when the bus is open/shorted. VOH ≥ 4V @ IO = -4mA; VOL ≤ 0.4V @ IO = 4mA. |+| 2 | RE | input | Active-low receiver output enable. RE = 0 enables RO; RE = 1 places RO in high-impedance. When RE = 1 and DE = 0 the chip enters low-power shutdown (typ. 1.8µA). |+| 3 | DE | input | Driver output enable. DE = 1 enables the driver; DE = 0 places the driver outputs (A, B) in high-impedance. When RE = 1 and DE = 0 the entire chip enters shutdown. |+| 4 | DI | input | Driver data input. When DI is low the non-inverting bus output (A) is forced low and inverting (B) high; when DI is high A is high and B is low. VIH ≥ 2.0V, VIL ≤ 0.8V, 100mV typical hysteresis. |+| 5 | GND | power_in | Ground reference for all signals and supply. |+| 6 | A | bidirectional | RS-485/RS-422 bus interface, non-inverting driver output and non-inverting receiver input. ±15kV HBM / ±12kV IEC 61000-4-2 contact-discharge ESD protection. Rated for -7V to +12V common-mode range. |+| 7 | B | bidirectional | RS-485/RS-422 bus interface, inverting driver output and inverting receiver input. ±15kV HBM / ±12kV IEC 61000-4-2 contact-discharge ESD protection. Rated for -7V to +12V common-mode range. |+| 8 | VCC | power_in | Positive supply, 4.75V to 5.25V (5V nominal). Bypass to GND with a 0.1µF ceramic capacitor. Typical ICC = 450µA (max 600µA), shutdown ISHDN typ. 1.8µA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | GEC |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `WS3085EESA-GECEESA-GEC`+- `WS3085EESA-GECEESA-GB`++## CAD (KiCad official)++- Symbol: `WS3085EESA-GEC`+- 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/ws3085eesa-gec-datasheet.pdf) (10 pp, sha256 `322eb465dd4a8217`, 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/ws3085eesa-gec-datasheet.pdf)
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