GM485E 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. With /RE low, RO is logic high when A-B ≥ -50mV and logic low when A-B ≤ -200mV. Drives a CMOS-level logic output to the host UART Rx.
2	/RE	input	Receiver output enable (active low). When /RE is low the RO output is enabled; when /RE is high RO is high-impedance. If /RE is high AND DE is low the device enters low-power shutdown mode (ICC ≈ 1nA typ).
3	DE	input	Driver output enable (active high). When DE is high the differential driver A/B is enabled; when DE is low the driver outputs are high-impedance. If /RE is high AND DE is low the device enters low-power shutdown mode.
4	DI	input	Driver data input. A logic low on DI forces the non-inverting driver output (A) low and the inverting output (B) high; a logic high forces A high and B low. Typically driven by the host UART Tx.
5	GND	power_in	Ground / device 0V reference.
6	A	bidirectional	Non-inverting receiver input and non-inverting driver output (RS-485/RS-422 bus line A). Withstands ±15kV HBM and ±12kV IEC 61000-4-2 contact discharge; input impedance ≈96kΩ (1/8 unit load). Absolute-max input voltage ±13V.
7	B	bidirectional	Inverting receiver input and inverting driver output (RS-485/RS-422 bus line B). Withstands ±15kV HBM and ±12kV IEC 61000-4-2 contact discharge; input impedance ≈96kΩ (1/8 unit load). Absolute-max input voltage ±13V.
8	VCC	power_in	Positive supply input, 3.0V ≤ VCC ≤ 5.5V (absolute max +7V). Bypass with a 0.1µF ceramic capacitor to GND close to the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

GM485E
GM485P

CAD (KiCad official)

Symbol: GM485E
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: GATEMODE datasheet (13 pp, sha256 d8116d164fe03f91, 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