MAX3078EIM

{
  "slug": "max3078eim",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI RS-485 / RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "max3078eim",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "max3078eim.kicad_sym",
    "max3078eim.kicad_mod",
    "max3078eim.glb",
    "max3078eim.step",
    "max3078eim.lbr",
    "docs/hero.png",
    "docs/max3078eim-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "max3078eim-hero.glb",
    "max3078eim-hero.overlay.json",
    "max3078eim-etched.glb"
  ],
  "component": {
    "mpn": "MAX3078EIM",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707350548566016",
    "parts": {
      "symbol": "max3078eim.kicad_sym",
      "footprint": "max3078eim.kicad_mod",
      "model_3d": "max3078eim-hero.glb",
      "model_3d_plain": "max3078eim-etched.glb",
      "model_3d_step": "max3078eim-etched.step",
      "model_3d_step_plain": "max3078eim.step",
      "lbr": "max3078eim.lbr"
    },
    "distributor_links": {
      "lcsc": "C7432204"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:24:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: with RE low, RO is high when A−B is at or above the -50mV threshold and low when A−B is at or below -200mV, and it is high-impedance when RE is high."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable, active low: RO is enabled when RE is low and goes high-impedance when RE is high; RE high with DE low puts the device into low-power shutdown, and RE has a hot-plug input structure."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable, active high: the driver outputs are enabled when DE is high and high-impedance when DE is low; DE has a hot-plug input structure."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input: with DE high, a low on DI drives A/Y low and B/Z high, and a high on DI drives A/Y high and B/Z low."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Receiver non-inverting input and driver non-inverting output (A/Y); receiver threshold is ±200mV EIA/TIA-485 compatible with 96kΩ typical input impedance per the datasheet's receiver specification."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Receiver inverting input and driver inverting output (B/Z); receiver input impedance is 1/8 unit load (96kΩ) for common-mode range -7V to +12V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 3.15V to 3.45V; decouple with a 0.1µF capacitor to ground."
      }
    ],
    "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 pin table on page 12 is a multi-column layout that is garbled in the text extraction. The 8-pin ; The receiver threshold text is inconsistent within the datasheet. The page 12 RO pin description say; Pins 6 and 7 are labeled A and B in the page 12 pin table but A/Y and B/Z in the page 13 function ta"
        ],
        "pages_sent": 23,
        "cost_usd": 0.0946,
        "at": "2026-10-18T01:22:45"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707350548566016",
        "pages": 23,
        "sha256": "96528bc5b794065e",
        "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": "max3078eim.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "max3078eim-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": "b409379462d3adbd64bf40fa8da4a589efbac4feafec4a9432f22a9d3a2b285f",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}