component

ADM3485EARZ

Public Made by Adom

by adom

UMW 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 adm3485earz: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
adm3485earz-etched.fit.json adm3485earz: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
adm3485earz-etched.glb adm3485earz: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
adm3485earz-etched.step adm3485earz: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
adm3485earz.glb Publish 0.1.0 · Ray 2mo ago
adm3485earz.kicad_mod Publish 0.1.0 · Ray 2mo ago
adm3485earz.kicad_sym Publish 0.1.0 · Ray 2mo ago
adm3485earz.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 2mo ago
adm3485earz.step Publish 0.1.0 · Ray 2mo ago
package.json Publish 0.2.0 · Ray 2mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
page.json adm3485earz: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md adm3485earz: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

ADM3485EARZ

UMW · RS-485 / RS-422 ICs · SOP-8

ADM3485EARZ from UMW, 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 tri_state Receiver output. When /RE is low and A-B >= 200mV, RO is high; when A-B <= -200mV, RO is low. RO is high-impedance when /RE is high.
2 /RE input Active-low receiver output enable. Low = receiver enabled (RO active); high = receiver output high-impedance. With /RE high AND DE low the device enters low-power shutdown.
3 DE input Driver output enable (active-high). High = driver outputs A/B active; low = driver outputs high-impedance. With /RE high AND DE low the device enters low-power shutdown.
4 DI input Driver input. When DE is high, DI low drives A low and B high; DI high drives A high and B low. Logic input thresholds: VIH >= 2V, VIL <= 0.8V.
5 GND power_in Ground / 0V reference for all voltages.
6 A bidirectional Non-inverting RS-485/RS-422 bus pin: non-inverting receiver input and non-inverting driver output. Common-mode range -7V to +12V; 15kV ESD-protected.
7 B bidirectional Inverting RS-485/RS-422 bus pin: inverting receiver input and inverting driver output. Common-mode range -7V to +12V; 15kV ESD-protected.
8 VCC power_in Positive supply, 3.0V to 3.6V nominal (3.3V typical). Absolute max 7V. Typical supply current 520-540 uA.

Key specifications

Parameter Value
Manufacturer UMW
Package SOP-8
Category Interface
Pins 8

Ordering variants

  • ADM3485EARZ

CAD (KiCad official)

  • Symbol: ADM3485EARZ
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: adm3485earz-etched.step / adm3485earz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adm3485earz.step / adm3485earz.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
adm3485earz.step 122 KB You want the bare part, or you mark your own boards.
adm3485earz-etched.step 2.2 MB You want the part with ADM3485EARZ already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 553 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: UMW datasheet (18 pp, sha256 05653b2e0ae83223, 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