SN65HVD1787EIM

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn65hvd1787eim",
  "title": "SN65HVD1787EIM",
  "brief": "HGSEMI RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sn65hvd1787eim"
  ],
  "component": {
    "mpn": "SN65HVD1787EIM",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f3f81c6211cbf397f05f5e911303add7.pdf",
    "parts": {
      "symbol": "sn65hvd1787eim.kicad_sym",
      "footprint": "sn65hvd1787eim.kicad_mod",
      "model_3d": "sn65hvd1787eim-etched.glb",
      "model_3d_plain": "sn65hvd1787eim.glb",
      "model_3d_step": "sn65hvd1787eim-etched.step",
      "model_3d_step_plain": "sn65hvd1787eim.step",
      "lbr": "sn65hvd1787eim.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "R",
        "type": "output",
        "description": "Receive data output. CMOS-level digital output that reflects the state of the differential receiver comparing bus pins A and B. High-Z when RE is high (receiver disabled)."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver enable, active low. Drive low to enable the receiver and drive R with the bus state; drive high to place R in high-impedance and (with DE=low) enter low-power standby (typ. 1 µA)."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver enable, active high. Drive high to enable the differential driver so that D is transmitted onto the A/B bus pins; drive low to place the driver outputs in high-impedance."
      },
      {
        "number": "4",
        "name": "D",
        "type": "input",
        "description": "Driver data input. CMOS-level TTL-compatible logic input; the state at D sets the differential polarity driven onto A/B when DE is high. VIH ≥ 2 V, VIL ≤ 0.8 V."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Local device ground / reference potential. Return for the VCC supply and reference for all logic-level I/O."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "RS-485 differential bus I/O, complementary to B. Acts as the non-inverting driver output when DE=high and as the non-inverting receiver input when the driver is disabled. Fault-protected to ±30 V (per '1787 spec) and rated to ±16 kV IEC HBM."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "RS-485 differential bus I/O, complementary to A. Acts as the inverting driver output when DE=high and as the inverting receiver input when the driver is disabled. Fault-protected to ±30 V (per '1787 spec)."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, 4.5 V to 5.5 V (nom 5 V). Typical ICC is 5 mA in operation and 1 µA in standby (DE=low, RE=high). Bypass locally with a 100 nF ceramic to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/f3f81c6211cbf397f05f5e911303add7.pdf",
        "pages": 25,
        "sha256": "5c40e5bdde3db2e4",
        "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": "sn65hvd1787eim.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": "sn65hvd1787eim-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": "3d1eaf7764536dc18c8eca2359346b513f1d2e91b217485894b55a4abfb352d0",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sn65hvd1787eim"
  ],
  "discovery_pitch": "SN65HVD1787EIM (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn65hvd1787eim.kicad_sym",
    "sn65hvd1787eim.kicad_mod",
    "sn65hvd1787eim.glb",
    "sn65hvd1787eim.step",
    "sn65hvd1787eim-etched.step",
    "sn65hvd1787eim.lbr",
    "docs/hero.png",
    "docs/sn65hvd1787eim-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SN65HVD1787EIM",
      "kind": "packaging"
    },
    {
      "mpn": "SN65HVD1787EIM/TR",
      "kind": "packaging"
    },
    {
      "mpn": "SN65HVD1787EIMEIN",
      "kind": "packaging"
    },
    {
      "mpn": "SN65HVD1787EIMM",
      "kind": "packaging"
    },
    {
      "mpn": "SN65HVD1787EIMM/TR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T06:25:21.732Z"
}