GM3485E from GATEMODE, 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 is low and (A-B) >= -50mV, RO is high; when (A-B) <= -200mV, RO is low. CMOS logic-level output referenced to VCC.
2	/RE	input	Receiver Output Enable (active-low). Drive /RE low to enable RO; drive /RE high to place RO in high-impedance. Driving /RE high together with DE low enters low-power shutdown mode.
3	DE	input	Driver Output Enable (active-high). Drive DE high to enable the driver outputs (A, B); driver outputs are high-impedance when DE is low. Driving /RE high with DE low enters low-power shutdown mode.
4	DI	input	Driver Input. With DE high, a low on DI forces the non-inverting output (A) low and the inverting output (B) high; a high on DI forces A high and B low. Input hysteresis is typically 100mV.
5	GND	power_in	Ground reference for the device.
6	A	bidirectional	Non-inverting receiver input and non-inverting driver output for the RS-485/RS-422 bus. ±15kV HBM ESD protected. Receiver input impedance 12kΩ (1-unit load); driver output voltage rating ±13V.
7	B	bidirectional	Inverting receiver input and inverting driver output for the RS-485/RS-422 bus. ±15kV HBM ESD protected. Receiver input impedance 12kΩ (1-unit load); driver output voltage rating ±13V.
8	VCC	power_in	Positive supply voltage, 3.0V to 5.5V. Bypass to GND with a 0.1µF ceramic capacitor. Supply current typically 0.5mA (unloaded); 20µA in shutdown mode.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

GM3485E

CAD (KiCad official)

Symbol: GM3485E
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`gm3485e.step`	122 KB	You want the bare part, or you mark your own boards.
`gm3485e-etched.step`	1.8 MB	You want the part with `GM3485E` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 443 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: GATEMODE datasheet (12 pp, sha256 eaf2206839d9d7c7, 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