component
DS8921ATMX
Public Made by Adomby adom
Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# DS8921ATMX++**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-8++DS8921ATMX from Texas Instruments, in a SOIC-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 | VCC | power_in | Power supply pin; rated 5 V with operating range 4.5 to 5.5 V |+| 2 | RO | output | Receiver output pin; TTL-compatible with VOH = 2.5 V minimum, VOL = 0.5 V maximum |+| 3 | DI | input | TTL/CMOS-compatible driver input; VIH = 2.0 V, VIL = 0.8 V |+| 4 | GND | power_in | Power ground pin |+| 5 | DO- | output | Inverting differential driver output; VOH = 2.5 V minimum, VOL = 0.5 V maximum |+| 6 | DO+ | output | Non-inverting differential driver output; VOH = 2.5 V minimum, VOL = 0.5 V maximum |+| 7 | RI- | input | Inverting differential receiver input; ±200 mV sensitivity over ±7 V common-mode range |+| 8 | RI+ | input | Non-inverting differential receiver input; ±200 mV sensitivity over ±7 V common-mode range |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Interface |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `DS8921ATMX`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)+- 3D model files: `ds8921atmx-etched.step` / `ds8921atmx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ds8921atmx.step` / `ds8921atmx.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/ds8921atmx.pdf) (22 pp, sha256 `0be14ebc915d205b`, retrieved 2026-09-24, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/ds8921atmx-datasheet.pdf)
page.jsonadded+141@@ -0,0 +1,141 @@+{+ "slug": "ds8921atmx",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "ds8921atmx",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "ds8921atmx.kicad_sym",+ "ds8921atmx.kicad_mod",+ "ds8921atmx.glb",+ "ds8921atmx.step",+ "ds8921atmx.lbr",+ "docs/hero.png",+ "docs/ds8921atmx-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "DS8921ATMX",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "Interface",+ "subcategory": "RS-485 / RS-422 ICs",+ "datasheet": "https://www.ti.com/lit/ds/symlink/ds8921atmx.pdf",+ "parts": {+ "symbol": "ds8921atmx.kicad_sym",+ "footprint": "ds8921atmx.kicad_mod",+ "model_3d": "ds8921atmx-etched.glb",+ "model_3d_plain": "ds8921atmx.glb",+ "model_3d_step": "ds8921atmx-etched.step",+ "model_3d_step_plain": "ds8921atmx.step",+ "lbr": "ds8921atmx.lbr"+ },+ "distributor_links": {+ "lcsc": "C5216058"+ },+ "pins": [+ {+ "number": "1",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply pin; rated 5 V with operating range 4.5 to 5.5 V"+ },+ {+ "number": "2",+ "name": "RO",+ "type": "output",+ "description": "Receiver output pin; TTL-compatible with VOH = 2.5 V minimum, VOL = 0.5 V maximum"+ },+ {+ "number": "3",+ "name": "DI",+ "type": "input",+ "description": "TTL/CMOS-compatible driver input; VIH = 2.0 V, VIL = 0.8 V"+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Power ground pin"+ },+ {+ "number": "5",+ "name": "DO–",+ "type": "output",+ "description": "Inverting differential driver output; VOH = 2.5 V minimum, VOL = 0.5 V maximum"+ },+ {+ "number": "6",+ "name": "DO+",+ "type": "output",+ "description": "Non-inverting differential driver output; VOH = 2.5 V minimum, VOL = 0.5 V maximum"+ },+ {+ "number": "7",+ "name": "RI–",+ "type": "input",+ "description": "Inverting differential receiver input; ±200 mV sensitivity over ±7 V common-mode range"+ },+ {+ "number": "8",+ "name": "RI+",+ "type": "input",+ "description": "Non-inverting differential receiver input; ±200 mV sensitivity over ±7 V common-mode range"+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 22,+ "cost_usd": 0.18,+ "at": "2026-09-24T05:38:41"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/ds8921atmx.pdf",+ "pages": 22,+ "sha256": "0be14ebc915d205b",+ "source_tier": "mfr"+ },+ "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]"+ }+}