component

SP3485EIM

Public Made by Adom

by adom

HGSEMI RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

SP3485EIM

HGSEMI · RS-485 / RS-422 ICs · SOP-8

SP3485EIM from HGSEMI, 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 (active-low) is low and A-B >= +200 mV, RO is driven high; when A-B <= -200 mV, RO is driven low. High-impedance when receiver is disabled.
2 /RE input Receiver output enable (active-low). Low enables the receiver output RO; high tri-states RO. When /RE=high AND DE=low, the device enters low-power shutdown mode.
3 DE input Driver output enable (active-high). High enables the differential driver outputs on A and B; low tri-states them. When /RE=high AND DE=low, the device enters low-power shutdown mode.
4 DI input Driver input. When DE is high, a logic low on DI forces A low and B high; a logic high on DI forces A high and B low. TTL-compatible (VIH >= 2.0 V, VIL <= 0.8 V).
5 GND power_in Ground reference for all signals and supply.
6 A bidirectional Non-inverting differential bus pin. Serves as receiver non-inverting input and driver non-inverting output. Tolerates -7 V to +13 V common-mode range; ESD-protected to +/-15 kV HBM.
7 B bidirectional Inverting differential bus pin. Serves as receiver inverting input and driver inverting output. Tolerates -7 V to +13 V common-mode range; ESD-protected to +/-15 kV HBM.
8 VCC power_in Positive supply, 3.0 V to 3.6 V nominal (3.3 V typical). Absolute max +7 V. Decouple with a 100 nF ceramic capacitor to GND close to the pin.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOP-8
Category Interface
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • SP3485EIM/TR
  • SP3485ECM/TR
  • SP3485EIN
  • SP3485ECN
  • SP3485EIMM/TR
  • SP3485ECMM/TR
  • SP3485EIDQ3/TR
  • SP3485ECDQ3/TR
  • SP3485EIM8/TR
  • SP3485ECM8/TR

CAD (KiCad official)

  • Symbol: SP3485EIM
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: sp3485eim-etched.step / sp3485eim-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sp3485eim.step / sp3485eim.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sp3485eim.step 122 KB You want the bare part, or you mark your own boards.
sp3485eim-etched.step 2.1 MB You want the part with SP3485EIM already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 518 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HGSEMI datasheet (17 pp, sha256 c05da1a89ebea3bb, 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