XL3485

@@ -0,0 +1,48 @@+# XL3485++**XINLUDA** · RS-485 / RS-422 ICs · SOP-8++XL3485 from XINLUDA, 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 /RE is low: if (A-B) >= 200 mV, RO is high; if (A-B) <= -200 mV, RO is low. High-impedance when the receiver is disabled (/RE high). |+| 2 | /RE | input | Active-low receiver output enable. When /RE is low the receiver output RO is active; when /RE is high the receiver output is high-impedance. When /RE is high and DE is low, the device enters low-power shutdown mode. |+| 3 | DE | input | Driver output enable. Driver outputs A/B are active when DE is high and high-impedance when DE is low. When /RE is high and DE is low, the device enters low-power shutdown mode. |+| 4 | DI | input | Driver data input. With DE high, a logic low on DI drives A low and B high; a logic high on DI drives A high and B low. Logic thresholds VIH >= 2.0 V, VIL <= 0.8 V. |+| 5 | GND | power_in | Ground reference for the device. All voltages are referenced to this pin. |+| 6 | A | bidirectional | RS-485 non-inverting bus I/O. Receiver in-phase input and driver in-phase output. Bus-side voltage range -7 V to +13 V; receiver input resistance ~96 kΩ (1/8 unit load). |+| 7 | B | bidirectional | RS-485 inverting bus I/O. Receiver inverting input and driver inverting output. Bus-side voltage range -7 V to +13 V; receiver input resistance ~96 kΩ (1/8 unit load). |+| 8 | VCC | power_in | Positive supply, 3.0 V to 3.6 V (3.3 V nominal). Absolute maximum +7 V. Typical supply current 520 uA (receive) / 540 uA (transmit); shutdown current 0.5 uA typical. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XINLUDA |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `XL3485`+- `XL3485XD3485`++## CAD (KiCad official)++- Symbol: `XL3485`+- 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:** [XINLUDA datasheet](docs/xl3485-datasheet.pdf) (14 pp, sha256 `19e1b70d8514813f`, 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/xl3485-datasheet.pdf)

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