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)

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