component

JSM485ESA

Public Made by Adom

by adom

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

componentcomm-uartjsm485esa
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs jsm485esa: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
jsm485esa-etched.fit.json jsm485esa: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
jsm485esa-etched.glb jsm485esa: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
jsm485esa-etched.step jsm485esa: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
jsm485esa.glb Publish 0.1.0 · Ray 1mo ago
jsm485esa.kicad_mod Publish 0.1.0 · Ray 1mo ago
jsm485esa.kicad_sym Publish 0.1.0 · Ray 1mo ago
jsm485esa.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 8 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
jsm485esa.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json jsm485esa: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 20h ago
README.md jsm485esa: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 19d ago

JSM485ESA

JSMSEMI · RS-485/RS-422 ICs · SOP-8

JSM485ESA from JSMSEMI, 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, RO drives high if (A-B) ≥ 200 mV and low if (A-B) ≤ -200 mV. High-impedance when /RE is high.
2 /RE input Receiver enable, active-low. Low enables the receiver output RO; high disables (tri-states) the receiver.
3 DE input Driver enable, active-high. High enables the differential A/B driver; low tri-states the driver outputs.
4 DI input Driver (transmitter) data input. With DE high: DI low drives A low and B high; DI high drives A high and B low.
5 GND power_in Ground reference for the device.
6 A bidirectional Non-inverting RS-485/RS-422 bus pin. Receiver non-inverting input and driver non-inverting output. -7 V to +12 V common-mode range, 32 kΩ typical input impedance.
7 B bidirectional Inverting RS-485/RS-422 bus pin. Receiver inverting input and driver inverting output. -7 V to +12 V common-mode range, 32 kΩ typical input impedance.
8 VCC power_in Supply pin, typically 5 V. Recommended operating range 3.0 V to 5.5 V; absolute maximum 8.0 V. Typical supply current 155-160 µA at no load.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package SOP-8
Category Comm/UART
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • JSM485ESA

CAD (KiCad official)

  • Symbol: JSM485ESA
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: jsm485esa-etched.step / jsm485esa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); jsm485esa.step / jsm485esa.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
jsm485esa.step 122 KB You want the bare part, or you mark your own boards.
jsm485esa-etched.step 2.1 MB You want the part with JSM485ESA already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 510 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: JSMSEMI datasheet (11 pp, sha256 9c1f59f8c7e5b077, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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