SL3490EESA

@@ -0,0 +1,51 @@+# SL3490EESA++**Slkor SLKORMICRO Elec** · RS-485 / RS-422 ICs · SOP-8++SL3490EESA from Slkor SLKORMICRO Elec, 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 | VCC | power_in | Positive supply. Operating range 3.0V to 5.5V; absolute maximum +7V. Decouple to GND with a bypass capacitor near the pin. |+| 2 | RO | output | Receiver output. Outputs high when (A-B) ≥ +200mV and low when (A-B) ≤ -200mV. VOH ≥ VCC-1.5V at IOUT=-4mA, VOL ≤ 0.4V at IOUT=+4mA. High under open/short (failsafe). |+| 3 | DI | input | Driver input. A low on DI forces Y low and Z high; a high on DI forces Y high and Z low. VIH ≥ 2.0V, VIL ≤ 0.8V, input current ±2µA. |+| 4 | GND | power_in | Ground reference for the device. All voltages are referenced to this pin. |+| 5 | Y | output | Non-inverting driver output to RS-485/RS-422 bus. Differential driver output VOD ≥ 1.5V with RL=54Ω or 100Ω; short-circuit current limited to ±250mA max. ±15kV HBM ESD protection. |+| 6 | Z | output | Inverting driver output to RS-485/RS-422 bus. Differential driver output VOD ≥ 1.5V with RL=54Ω or 100Ω; short-circuit current limited to ±250mA max. ±15kV HBM ESD protection. |+| 7 | B | input | Inverting receiver input from RS-485/RS-422 bus. Common-mode range -7V to +12V; receiver input impedance 96kΩ (1/8 unit load). ±15kV HBM ESD protection. |+| 8 | A | input | Non-inverting receiver input from RS-485/RS-422 bus. Common-mode range -7V to +12V; receiver input impedance 96kΩ (1/8 unit load). ±15kV HBM ESD protection. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Slkor SLKORMICRO Elec |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `SL3490EESA`+- `SL3490EEPA`+- `SL3490EEUA`++## CAD (KiCad official)++- Symbol: `SL3490EESA`+- 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:** [Slkor SLKORMICRO Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603061139001790464) (None pp, sha256 `ca101c925cc431ab`, 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/sl3490eesa-datasheet.pdf)

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