component

MAX485ED

Public Made by Adom

by adom

HTC Korea TAEJIN Tech RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs max485ed: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
max485ed-etched.fit.json max485ed: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
max485ed-etched.glb max485ed: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
max485ed-etched.step max485ed: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
max485ed.glb Publish 0.1.0 · Ray
max485ed.kicad_mod Publish 0.1.0 · Ray
max485ed.kicad_sym Publish 0.1.0 · Ray
max485ed.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
max485ed.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json max485ed: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md max485ed: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

MAX485ED

HTC Korea TAEJIN Tech · RS-485 / RS-422 ICs · SOP-8

MAX485ED from HTC Korea TAEJIN Tech, 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. Logic-level output that reflects the polarity of the differential A-B receiver input. High when A-B >= +0.2V, low when A-B <= -0.2V. High-impedance when RE is high; fail-safe guarantees a HIGH state when inputs are left unconnected.
2 RE input Receiver output enable, active LOW. A logic LOW enables the receiver output RO; a logic HIGH places RO in high-impedance (tri-state). Datasheet notes this pin as RE* (active-low).
3 DE input Driver output enable, active HIGH. A logic HIGH enables the differential driver outputs A and B; a logic LOW places the driver in high-impedance (tri-state).
4 DI input Driver input. Logic-level TTL/CMOS input to the differential driver. When DE is high, DI=1 drives A high and B low; DI=0 drives A low and B high.
5 GND power_in Ground reference for the device.
6 A bidirectional Non-inverting driver output and non-inverting receiver input. Part of the RS-485/RS-422 differential pair. Common-mode range -7V to +12V; can withstand -15V to +15V; receiver input impedance typ. 15kΩ (12kΩ min).
7 B bidirectional Inverting driver output and inverting receiver input. Part of the RS-485/RS-422 differential pair. Common-mode range -7V to +12V; can withstand -15V to +15V; receiver input impedance typ. 15kΩ (12kΩ min).
8 VCC power_in Positive supply input. Operating range 4.75V to 5.25V (nominal +5V). Absolute maximum 7V. No-load supply current typ. 900µA (DE=VCC) or 600µA (DE=0V).

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package SOP-8
Category Interface
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • MAX485ED
  • MAX485EDEN

CAD (KiCad official)

  • Symbol: MAX485ED
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: max485ed-etched.step / max485ed-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max485ed.step / max485ed.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
max485ed.step 122 KB You want the bare part, or you mark your own boards.
max485ed-etched.step 1.6 MB You want the part with MAX485ED already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 420 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: HTC Korea TAEJIN Tech datasheet (10 pp, sha256 774f69f5ba13229b, 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