SP485REN-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 of the RS-485 differential receiver (VOH ≥ 2.4V, VOL ≤ 0.4V). High impedance when the receiver is disabled (RE = HIGH). Also drives HIGH under fail-safe when the A/B inputs are open.
2	/RE	input	Receiver Output Enable, active LOW. Drive LOW to enable RO; drive HIGH to place RO into high impedance (tri-state). Typically tied to DE for automatic direction control in half-duplex RS-485 links.
3	DE	input	Driver Output Enable, active HIGH. Drive HIGH to enable the differential driver onto pins A/B; drive LOW to tri-state the A/B outputs (>100kΩ). Combined with /RE for half-duplex bus direction control.
4	DI	input	Driver Input. CMOS-level TX data input to the RS-485 driver (VIL ≤ 0.8V, VIH ≥ 2.0V). When DE is HIGH, a LOW on DI forces A LOW and B HIGH; a HIGH on DI forces A HIGH and B LOW.
5	GND	power_in	Ground / 0V reference for the device.
6	A	bidirectional	Non-inverting RS-485 bus line. Serves as the driver's non-inverting output when DE is HIGH and as the receiver's non-inverting input when /RE is LOW. -7V to +12V common-mode range; input impedance ≥ 120kΩ (1/10 unit load).
7	B	bidirectional	Inverting RS-485 bus line. Serves as the driver's inverting output when DE is HIGH and as the receiver's inverting input when /RE is LOW. -7V to +12V common-mode range; input impedance ≥ 120kΩ (1/10 unit load).
8	VCC	power_in	Positive supply, +4.75V to +5.25V. Typical supply current 300µA (DE low) to 500µA (DE high), no load.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

SP485REN-L
SP485REN-L/TR
SP485RCN-L
SP485RCN-L/TR
SP485REP-L
SP485RCP-L

CAD (KiCad official)

Symbol: SP485REN-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
`sp485ren-l.step`	122 KB	You want the bare part, or you mark your own boards.
`sp485ren-l-etched.step`	2.0 MB	You want the part with `SP485REN-L` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 500 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 b2e699515e04ebc4, 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