SN75179BD

{
  "slug": "sn75179bd",
  "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",
    "sn75179bd",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn75179bd.kicad_sym",
    "sn75179bd.kicad_mod",
    "sn75179bd.glb",
    "sn75179bd.step",
    "sn75179bd.lbr",
    "docs/hero.png",
    "docs/sn75179bd-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn75179bd-hero.glb",
    "sn75179bd-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN75179BD",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn75179b",
    "parts": {
      "symbol": "sn75179bd.kicad_sym",
      "footprint": "sn75179bd.kicad_mod",
      "model_3d": "sn75179bd-hero.glb",
      "model_3d_plain": "sn75179bd.glb",
      "model_3d_step": "sn75179bd-etched.step",
      "model_3d_step_plain": "sn75179bd.step",
      "lbr": "sn75179bd.lbr"
    },
    "distributor_links": {
      "lcsc": "C354460",
      "digikey": "2156-SN75179BD-ND",
      "mouser": "595-SN75179BD"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T07:35:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-SN75179BD-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "595-SN75179BD",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "5V power supply"
      },
      {
        "number": "2",
        "name": "R",
        "type": "output",
        "description": "Receiver output; high when differential A-B ≥ +0.2V, low when A-B ≤ -0.2V"
      },
      {
        "number": "3",
        "name": "D",
        "type": "input",
        "description": "Driver input; controls Y and Z outputs complementarily; logic high/low"
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference"
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "Non-inverting driver output; high when D input high; ±60mA output capability"
      },
      {
        "number": "6",
        "name": "Z",
        "type": "output",
        "description": "Inverted driver output; high when D input low; ±60mA output capability"
      },
      {
        "number": "7",
        "name": "B",
        "type": "input",
        "description": "Inverted RS485 bus input; 12kΩ minimum input impedance; differential pair with pin 8 (A)"
      },
      {
        "number": "8",
        "name": "A",
        "type": "input",
        "description": "Non-inverting RS485 bus input; 12kΩ minimum input impedance; differential pair with pin 7 (B)"
      }
    ],
    "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": 23,
        "cost_usd": 0.1009,
        "at": "2026-10-07T07:35:10"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn75179b",
        "pages": 23,
        "sha256": "68cd6a4ac24e706a",
        "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"
    },
    "models_3d": [
      {
        "file": "sn75179bd.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn75179bd-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1b4fa8ad217df4ff9d30f40c07a9e53251b6d71f9ed4a6ea7088308f1323507f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}