component

WS3081

Public Made by Adom

by adom

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

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Contents

README

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WS3081

GEC · RS-485 / RS-422 ICs · SOP-8

WS3081 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 (/RE low), RO outputs high if V(A)-V(B) > -50mV and low if V(A)-V(B) < -200mV. High-impedance when the receiver is disabled.
2 /RE input Receiver enable, active low. When /RE is low the receiver is enabled and RO is active; when /RE is high the receiver is disabled. With /RE high and DE low the chip enters low-power shutdown.
3 DE input Driver enable, active high. When DE is high the driver is enabled; when DE is low the driver outputs are high-impedance. With /RE high and DE low the chip enters shutdown.
4 DI input Driver input. When DI is low the non-inverting bus output (A) is low and the inverting output (B) is high; when DI is high, A is high and B is low. TTL/CMOS-compatible logic input.
5 GND power_in Ground reference (0V) for the device.
6 A bidirectional RS-485/RS-422 bus interface, non-inverting. Driver non-inverting output and receiver non-inverting input. Rated for -7V to +12V common-mode range, ±15kV HBM / ±12kV IEC61000-4-2 contact ESD.
7 B bidirectional RS-485/RS-422 bus interface, inverting. Driver inverting output and receiver inverting input. Rated for -7V to +12V common-mode range, ±15kV HBM / ±12kV IEC61000-4-2 contact ESD.
8 VCC power_in Positive supply, recommended 3.0V to 5.25V (typ 3.3V/5V). Bypass to GND with a 0.1uF capacitor. Absolute maximum 7V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • WS3081EESA

CAD (KiCad official)

  • Symbol: WS3081
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: ws3081-etched.step / ws3081-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ws3081.step / ws3081.glb are the bare package body.

Provenance

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

  • Datasheet: GEC datasheet (11 pp, sha256 afb12279379a27e8, 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