SN75LBC172DWR

{
  "slug": "sn75lbc172dwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments RS-485 / RS-422 ICs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "sn75lbc172dwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn75lbc172dwr.kicad_sym",
    "sn75lbc172dwr.kicad_mod",
    "sn75lbc172dwr.glb",
    "sn75lbc172dwr.step",
    "sn75lbc172dwr.lbr",
    "docs/hero.png",
    "docs/sn75lbc172dwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn75lbc172dwr-hero.glb",
    "sn75lbc172dwr-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN75LBC172DWR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn75lbc172",
    "parts": {
      "symbol": "sn75lbc172dwr.kicad_sym",
      "footprint": "sn75lbc172dwr.kicad_mod",
      "model_3d": "sn75lbc172dwr-hero.glb",
      "model_3d_plain": "sn75lbc172dwr.glb",
      "model_3d_step": "sn75lbc172dwr-etched.step",
      "model_3d_step_plain": "sn75lbc172dwr.step",
      "lbr": "sn75lbc172dwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2873205",
      "digikey": "296-SN75LBC172DWRTR-ND",
      "mouser": "595-SN75LBC172DWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T20:23:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-SN75LBC172DWRTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN75LBC172DWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1A",
        "type": "input",
        "description": "Driver 1 input."
      },
      {
        "number": "2",
        "name": "1Y",
        "type": "output",
        "description": "Driver 1 output (non-inverting)."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "4",
        "name": "1Z",
        "type": "output",
        "description": "Driver 1 inverted output."
      },
      {
        "number": "5",
        "name": "G",
        "type": "input",
        "description": "Active high enable for all drivers."
      },
      {
        "number": "6",
        "name": "2Z",
        "type": "output",
        "description": "Driver 2 inverted output."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "8",
        "name": "2Y",
        "type": "output",
        "description": "Driver 2 output (non-inverting)."
      },
      {
        "number": "9",
        "name": "2A",
        "type": "input",
        "description": "Driver 2 input."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; all voltages are referenced to GND, and the absolute maximum VCC is −0.3 V to 7 V."
      },
      {
        "number": "11",
        "name": "3A",
        "type": "input",
        "description": "Driver 3 input."
      },
      {
        "number": "12",
        "name": "3Y",
        "type": "output",
        "description": "Driver 3 output (non-inverting)."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "14",
        "name": "3Z",
        "type": "output",
        "description": "Driver 3 inverted output."
      },
      {
        "number": "15",
        "name": "G",
        "type": "input",
        "description": "Active low enable for all drivers."
      },
      {
        "number": "16",
        "name": "4Z",
        "type": "output",
        "description": "Driver 4 inverted output."
      },
      {
        "number": "17",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "18",
        "name": "4Y",
        "type": "output",
        "description": "Driver 4 output (non-inverting)."
      },
      {
        "number": "19",
        "name": "4A",
        "type": "input",
        "description": "Driver 4 input."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Power pin; recommended supply voltage is 4.75 V to 5.25 V (5 V nominal)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet covers the SN75LBC172DWR (SOIC-20, DW) in the DW package pin table (Table 4-2, page 4); Pin 19 (4A) is typed as 'O' (output) in the N-package table on page 3, which looks like a datasheet ; The pin table does not state a type for G (pins 5 and 15) beyond 'I' (input). The datasheet defines "
        ],
        "pages_sent": 23,
        "cost_usd": 0.0821,
        "at": "2026-10-08T20:22:42"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn75lbc172",
        "pages": 23,
        "sha256": "1b77235f28012611",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sn75lbc172dwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn75lbc172dwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          12.8,
          2.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e30e9128428a3f725533e46b000ef35493c4e4512b75089befba87bfde4c598c",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}