component
ST3485EIDT
Public Made by Adomby adom
STMicroelectronics RS-485 / RS-422 ICs, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+44@@ -0,0 +1,44 @@+# ST3485EIDT++**STMicroelectronics** · RS-485 / RS-422 ICs · SO-8++ST3485EIDT from STMicroelectronics, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | RO | tri_state | Receiver output; high when A > B by ≥200 mV, low when A < B by ≤200 mV, high-impedance when RE is high. |+| 2 | RE | input | Receiver enable; when low enables receiver output, when high places output in high-impedance. |+| 3 | DE | input | Driver enable; when high enables driver outputs, when low places outputs in high-impedance. |+| 4 | DI | input | Driver input; low forces A low and B high, high forces A high and B low. |+| 5 | GND | power_in | Ground. |+| 6 | A | bidirectional | Non-inverting differential signal line; receiver input and driver output. |+| 7 | B | bidirectional | Inverting differential signal line; receiver input and driver output. |+| 8 | VCC | power_in | Supply voltage, 3 V to 3.6 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SO-8 |+| Category | Interface |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `ST3485EIDT`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SO-8 (KiCad packages3D, STEP)+- 3D model files: `st3485eidt-etched.step` / `st3485eidt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `st3485eidt.step` / `st3485eidt.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588920637465776128) (24 pp, sha256 `ae974ab5146382f0`, retrieved 2026-10-01, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/st3485eidt-datasheet.pdf)
page.jsonadded+156@@ -0,0 +1,156 @@+{+ "slug": "st3485eidt",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics RS-485 / RS-422 ICs, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "st3485eidt",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "st3485eidt.kicad_sym",+ "st3485eidt.kicad_mod",+ "st3485eidt.glb",+ "st3485eidt.step",+ "st3485eidt.lbr",+ "docs/hero.png",+ "docs/st3485eidt-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "ST3485EIDT",+ "manufacturer": "STMicroelectronics",+ "package": "SO-8",+ "pin_count": 8,+ "category": "Interface",+ "subcategory": "RS-485 / RS-422 ICs",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588920637465776128",+ "parts": {+ "symbol": "st3485eidt.kicad_sym",+ "footprint": "st3485eidt.kicad_mod",+ "model_3d": "st3485eidt-etched.glb",+ "model_3d_plain": "st3485eidt.glb",+ "model_3d_step": "st3485eidt-etched.step",+ "model_3d_step_plain": "st3485eidt.step",+ "lbr": "st3485eidt.lbr"+ },+ "distributor_links": {+ "lcsc": "C2671252",+ "digikey": "497-16693-2-ND",+ "mouser": "511-ST3485EIDT"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T02:35:25Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-16693-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "511-ST3485EIDT",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "RO",+ "type": "tri_state",+ "description": "Receiver output; high when A > B by ≥200 mV, low when A < B by ≤200 mV, high-impedance when RE is high."+ },+ {+ "number": "2",+ "name": "RE",+ "type": "input",+ "description": "Receiver enable; when low enables receiver output, when high places output in high-impedance."+ },+ {+ "number": "3",+ "name": "DE",+ "type": "input",+ "description": "Driver enable; when high enables driver outputs, when low places outputs in high-impedance."+ },+ {+ "number": "4",+ "name": "DI",+ "type": "input",+ "description": "Driver input; low forces A low and B high, high forces A high and B low."+ },+ {+ "number": "5",+ "name": "GND",+ "type": "power_in",+ "description": "Ground."+ },+ {+ "number": "6",+ "name": "A",+ "type": "bidirectional",+ "description": "Non-inverting differential signal line; receiver input and driver output."+ },+ {+ "number": "7",+ "name": "B",+ "type": "bidirectional",+ "description": "Inverting differential signal line; receiver input and driver output."+ },+ {+ "number": "8",+ "name": "VCC",+ "type": "power_in",+ "description": "Supply voltage, 3 V to 3.6 V."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 24,+ "cost_usd": 0.1055,+ "at": "2026-10-01T02:35:11"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588920637465776128",+ "pages": 24,+ "sha256": "ae974ab5146382f0",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}