LTC2851IS8#TRPBF

{
  "slug": "ltc2851is8-trpbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices RS-485/RS-422 ICs, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "ltc2851is8#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ltc2851is8-trpbf.kicad_sym",
    "ltc2851is8-trpbf.kicad_mod",
    "ltc2851is8-trpbf.glb",
    "ltc2851is8-trpbf.step",
    "ltc2851is8-trpbf.lbr",
    "docs/hero.png",
    "docs/ltc2851is8-trpbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ltc2851is8-trpbf-hero.glb",
    "ltc2851is8-trpbf-hero.overlay.json",
    "ltc2851is8-trpbf-etched.glb"
  ],
  "component": {
    "mpn": "LTC2851IS8#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Interface ICs",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/285012fe.pdf",
    "parts": {
      "symbol": "ltc2851is8-trpbf.kicad_sym",
      "footprint": "ltc2851is8-trpbf.kicad_mod",
      "model_3d": "ltc2851is8-trpbf-hero.glb",
      "model_3d_plain": "ltc2851is8-trpbf-etched.glb",
      "model_3d_step": "ltc2851is8-trpbf-etched.step",
      "model_3d_step_plain": "ltc2851is8-trpbf.step",
      "lbr": "ltc2851is8-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C682763",
      "digikey": "505-LTC2851IS8#TRPBFTR-ND",
      "mouser": "584-LTC2851IS8#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T21:16:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-LTC2851IS8#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LTC2851IS8#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 3V ≤ VCC ≤ 3.6V, bypass with a 0.1µF ceramic capacitor."
      },
      {
        "number": "2",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: high when A > B by 200mV, low when A < B by 200mV, and high if the receiver inputs are open, shorted or terminated without a valid signal."
      },
      {
        "number": "3",
        "name": "DI",
        "type": "input",
        "description": "Driver input: a high forces Y high and Z low, a low forces Y low and Z high; the LTC2851 has no driver enable so the driver is always enabled."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "Noninverting driver output, high impedance when the driver is disabled or unpowered."
      },
      {
        "number": "6",
        "name": "Z",
        "type": "output",
        "description": "Inverting driver output, high impedance when the driver is disabled or unpowered."
      },
      {
        "number": "7",
        "name": "B",
        "type": "input",
        "description": "Inverting receiver input, with impedance >96kΩ in receive mode or unpowered."
      },
      {
        "number": "8",
        "name": "A",
        "type": "input",
        "description": "Noninverting receiver input, with impedance >96kΩ in receive mode or unpowered."
      }
    ],
    "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 MPN LTC2850IS8#TRPBF does not appear verbatim in the datasheet. It was decoded from the ordering; The S8 pin numbers were assigned from the text layout of the PIN CONFIGURATION drawing on page 2 (pi; Pin types are KiCad classes assigned by function; the datasheet does not state them. A and B are bid"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0923,
        "at": "2026-10-30T21:15:56"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/285012fe.pdf",
        "pages": 18,
        "sha256": "68e25e1cc3687b9f",
        "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"
    },
    "models_3d": [
      {
        "file": "ltc2851is8-trpbf.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": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ltc2851is8-trpbf-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": "0f88354066420c98b4750a53cad32b027e7fee10a53422b52b04dfa4b21bee5b",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "S8",
      "source_page": 16,
      "D": {
        "nom_mm": 4.902,
        "range_mm": [
          4.801,
          5.004
        ]
      },
      "E1": {
        "nom_mm": 3.899,
        "range_mm": [
          3.81,
          3.988
        ]
      },
      "E": {
        "nom_mm": 5.994,
        "range_mm": [
          5.791,
          6.198
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.549,
        "range_mm": [
          1.346,
          1.753
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "ltc2851is8-trpbf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}