component

SN65LBC184DR

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 sn65lbc184dr: 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
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 Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray
README.md sn65lbc184dr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray
sn65lbc184dr-etched.fit.json sn65lbc184dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
sn65lbc184dr-etched.glb sn65lbc184dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
sn65lbc184dr-etched.step sn65lbc184dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
sn65lbc184dr.glb Publish 0.1.0 · Ray
sn65lbc184dr.kicad_mod Publish 0.1.0 · Ray
sn65lbc184dr.kicad_sym Publish 0.1.0 · Ray
sn65lbc184dr.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
sn65lbc184dr.step Publish 0.1.0 · Ray

SN65LBC184DR

UMW · RS-485 / RS-422 ICs · SOP-8

SN65LBC184DR 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 R output Receiver output. Drives a logic-level representation of the differential bus (A-B): H when VID >= 0.2 V, L when VID <= -0.2 V, high-impedance when /RE is high. Fail-safe high output when bus inputs are open.
2 /RE input Receiver output enable, active low. When low the receiver R is enabled; when high R is placed in high-impedance state.
3 DE input Driver output enable, active high. When high the differential driver outputs A and B are enabled; when low they are placed in high-impedance state.
4 D input Driver data input. When DE is high, a logic H on D drives A high and B low; a logic L on D drives A low and B high. Ignored when DE is low.
5 GND power_in Device ground reference. All voltage measurements (except differential bus voltage) are referenced to this pin.
6 A bidirectional Non-inverting differential bus I/O. Driver non-inverting output and receiver non-inverting input, with integrated transient voltage suppression (400-W surge, +/-15 V continuous common-mode range) and 1/4 unit-load input impedance.
7 B bidirectional Inverting differential bus I/O. Driver inverting output and receiver inverting input, with integrated transient voltage suppression (400-W surge, +/-15 V continuous common-mode range) and 1/4 unit-load input impedance.
8 VCC power_in Supply voltage input, +5 V nominal (absolute maximum -0.5 V to 7 V). Disabled supply current is 300 uA max.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • SN65LBC184DRD
  • SN65LBC184DR
  • SN65LBC184DRP

CAD (KiCad official)

  • Symbol: SN65LBC184DR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: sn65lbc184dr-etched.step / sn65lbc184dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn65lbc184dr.step / sn65lbc184dr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sn65lbc184dr.step 122 KB You want the bare part, or you mark your own boards.
sn65lbc184dr-etched.step 2.6 MB You want the part with SN65LBC184DR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 631 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 (23 pp, sha256 53d77bcd7a987620, 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