XL485-SS from XINLUDA, in a MSOP-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. Drives logic-high (VOH ≥ 4V at IO=-4mA) when A-B > -50mV, logic-low (VOL ≤ 0.4V at IO=4mA) when A-B < -200mV. High-impedance (tri-state) when RE is high. Fail-safe high when the receiver inputs are open or shorted.
2	RE	input	Receiver Enable, active-low. When RE is low the receiver output RO is enabled; when RE is high, RO is high-impedance. Input high VIH ≥ 2V, VIL ≤ 0.8V; input current ±2 µA max.
3	DE	input	Driver (Transmit) Enable, active-high. When DE is high the driver A/B outputs are enabled (transmit state); when DE is low the driver outputs are high-impedance (receive state). Input high VIH ≥ 2V, VIL ≤ 0.8V; input current ±2 µA max.
4	DI	input	Driver (transmit) data input. Logic level presented at DI is transmitted differentially onto the A/B bus when DE is high (A=H, B=L when DI=H; A=L, B=H when DI=L). VIH ≥ 2V, VIL ≤ 0.8V; input current ±2 µA max.
5	GND	power_in	Ground reference for the device.
6	A	bidirectional	Non-inverting differential RS-485 bus line. Driver output when DE=H, receiver input when DE=L. Handles bus voltage -15V to +15V, ±15kV HBM ESD protected, 96 kΩ min input impedance (1/8 unit load).
7	B	bidirectional	Inverting differential RS-485 bus line. Driver output when DE=H, receiver input when DE=L. Handles bus voltage -15V to +15V, ±15kV HBM ESD protected, 96 kΩ min input impedance (1/8 unit load).
8	VCC	power_in	Positive supply. Operating range 4.5V to 5.5V (absolute max 6.5V). Typical no-load ICC ≈ 450-480 µA (600 µA max). Bypass with a 0.1 µF ceramic capacitor to GND close to the pin.

Key specifications

Parameter	Value
Manufacturer	XINLUDA
Package	MSOP-8
Category	Interface
Pins	8

Ordering variants

Same part, different packaging or reel option.

XL485-SS
XL485-SSCS

CAD (KiCad official)

Symbol: XL485-SS
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`xl485-ss.step`	123 KB	You want the bare part, or you mark your own boards.
`xl485-ss-etched.step`	1.8 MB	You want the part with `XL485-SS` 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: XINLUDA datasheet (12 pp, sha256 beda812d2302c6e8, 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