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SL3490EESA

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by Ray

Slkor SLKORMICRO Elec RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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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 (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