SP3485EN-L from MaxLinear, in a SOIC-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. CMOS-level output driven from the differential A/B receiver. High-Z when the receiver is disabled (RE=HIGH). Fail-safe HIGH when receiver inputs are open.
2	RE	input	Receiver Output Enable, active LOW. A logic LOW enables the differential receiver (RO driven); a logic HIGH tri-states RO. Input high/low thresholds: VIH=2.0V min, VIL=0.8V max.
3	DE	input	Driver Output Enable, active HIGH. A logic HIGH enables the differential driver outputs on A/B; a logic LOW tri-states them. VIH=2.0V min, VIL=0.8V max.
4	DI	input	Driver Input. CMOS-level logic input whose state controls the differential driver output on A/B when DE is HIGH. VIH=2.0V min, VIL=0.8V max, IIN=±10 µA.
5	GND	power_in	Ground reference (0 V) for the device.
6	A	bidirectional	Non-inverting driver output / non-inverting receiver input on the RS-485/RS-422 differential bus. Common-mode range -7V to +12V; short-circuit protected to ±250 mA.
7	B	bidirectional	Inverting driver output / inverting receiver input on the RS-485/RS-422 differential bus. Common-mode range -7V to +12V; short-circuit protected to ±250 mA.
8	VCC	power_in	Positive supply, +3.3V ±5%. Absolute maximum +6.0V. Typical supply current 1000 µA (driver enabled, no load).

Key specifications

Parameter	Value
Manufacturer	MaxLinear
Package	SOIC-8
Category	Interface
Pins	8

Ordering variants

Same part, different packaging or reel option.

SP3485EN-LCN-L
SP3485EN-LCN-L/TR
SP3485EN-L
SP3485EN-L/TR

CAD (KiCad official)

Symbol: SP3485EN-L
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sp3485en-l.step`	122 KB	You want the bare part, or you mark your own boards.
`sp3485en-l-etched.step`	2.1 MB	You want the part with `SP3485EN-L` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 511 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: MaxLinear datasheet (9 pp, sha256 b01eb091aab969e3, retrieved 2026-08-17, tier: manufacturer)
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