SP485EN-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 logic output of the differential receiver. Outputs HIGH (>=2.4V @ Io=-4mA) when A-B > +200mV, LOW (<=0.4V @ Io=+4mA) when A-B < -200mV. High-impedance when /RE is HIGH.
2	/RE	input	Receiver Output Enable, active LOW. Drive LOW to enable RO; drive HIGH to place RO in high-impedance (three-state). Standard CMOS logic input (VIH >= 2.0V, VIL <= 0.8V).
3	DE	input	Driver Output Enable, active HIGH. Drive HIGH to enable the differential driver onto A/B; drive LOW to place driver outputs in high-impedance. Standard CMOS logic input (VIH >= 2.0V, VIL <= 0.8V).
4	DI	input	Driver Input. CMOS logic-level input that drives the differential bus when DE is HIGH. A HIGH on DI forces A > B; a LOW forces B > A. VIH >= 2.0V, VIL <= 0.8V.
5	GND	power_in	Ground reference for all logic and driver/receiver circuitry.
6	A	bidirectional	Non-inverting differential driver output / receiver input. Connects to the RS-485/RS-422 bus. Withstands common-mode voltages from -7V to +12V; differential threshold +/-200mV; input resistance >=12kΩ.
7	B	bidirectional	Inverting differential driver output / receiver input. Connects to the RS-485/RS-422 bus. Withstands common-mode voltages from -7V to +12V; differential threshold +/-200mV; input resistance >=12kΩ.
8	VCC	power_in	Positive supply input. Operating range +4.75V to +5.25V (+5V nominal). Typical supply current 900µA (SP485). Absolute max +7V. Decouple with a 0.1µF ceramic capacitor to GND.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SP485EN-L
SP485EN-L/TR
SP485CN-L
SP485CN-L/TR
SP485ES-L
SP485CS-L

CAD (KiCad official)

Symbol: SP485EN-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
`sp485en-l.step`	122 KB	You want the bare part, or you mark your own boards.
`sp485en-l-etched.step`	1.8 MB	You want the part with `SP485EN-L` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 450 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 (13 pp, sha256 0ca911ff79c9ea65, 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