DS3487N

{
  "schema_version": 1,
  "type": "component",
  "slug": "ds3487n",
  "title": "DS3487N",
  "brief": "HGSEMI RS-485 / RS-422 ICs, DIP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "ds3487n"
  ],
  "component": {
    "mpn": "DS3487N",
    "manufacturer": "HGSEMI",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603058176522526720",
    "parts": {
      "symbol": "ds3487n.kicad_sym",
      "footprint": "ds3487n.kicad_mod",
      "model_3d": "ds3487n-etched.glb",
      "model_3d_plain": "ds3487n.glb",
      "model_3d_step": "ds3487n-etched.step",
      "model_3d_step_plain": "ds3487n.step",
      "lbr": "ds3487n.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "INPUT_A",
        "type": "input",
        "description": "TTL-compatible data input for driver channel A. Drives non-inverting output high and inverting output low when logic high (VIH >= 2.0V); PNP-buffered to minimize input loading."
      },
      {
        "number": "2",
        "name": "OUTPUT_A_NI",
        "type": "tri_state",
        "description": "Non-inverting differential line-driver output for channel A. Drives VOH >= 2.5V at IOH = -20 mA or VOL <= 0.5V at IOL = 48 mA; enters high impedance when A/B control (pin 4) is low."
      },
      {
        "number": "3",
        "name": "OUTPUT_A_INV",
        "type": "tri_state",
        "description": "Inverting differential line-driver output for channel A. Complement of pin 2; enters TRI-STATE when A/B control (pin 4) is low. Meets EIA RS-422 differential output voltage VT >= 2.0V."
      },
      {
        "number": "4",
        "name": "A/B_CONTROL",
        "type": "input",
        "description": "Active-high output enable shared by drivers A and B. When high, both A and B differential outputs are enabled; when low, both A and B outputs are forced to TRI-STATE (high impedance)."
      },
      {
        "number": "5",
        "name": "OUTPUT_B_INV",
        "type": "tri_state",
        "description": "Inverting differential line-driver output for channel B. Complement of pin 6; enters TRI-STATE when A/B control (pin 4) is low."
      },
      {
        "number": "6",
        "name": "OUTPUT_B_NI",
        "type": "tri_state",
        "description": "Non-inverting differential line-driver output for channel B. Drives VOH >= 2.5V at IOH = -20 mA or VOL <= 0.5V at IOL = 48 mA; enters TRI-STATE when A/B control (pin 4) is low."
      },
      {
        "number": "7",
        "name": "INPUT_B",
        "type": "input",
        "description": "TTL-compatible data input for driver channel B. VIL <= 0.8V, VIH >= 2.0V; PNP-buffered so IIL is typically only a small microamp-level load."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground (0V) reference for all inputs, outputs, and the internal logic."
      },
      {
        "number": "9",
        "name": "INPUT_C",
        "type": "input",
        "description": "TTL-compatible data input for driver channel C. VIL <= 0.8V, VIH >= 2.0V; PNP-buffered input to minimize source loading."
      },
      {
        "number": "10",
        "name": "OUTPUT_C_NI",
        "type": "tri_state",
        "description": "Non-inverting differential line-driver output for channel C. Drives VOH >= 2.5V at IOH = -20 mA or VOL <= 0.5V at IOL = 48 mA; enters TRI-STATE when C/D control (pin 12) is low."
      },
      {
        "number": "11",
        "name": "OUTPUT_C_INV",
        "type": "tri_state",
        "description": "Inverting differential line-driver output for channel C. Complement of pin 10; enters TRI-STATE when C/D control (pin 12) is low."
      },
      {
        "number": "12",
        "name": "C/D_CONTROL",
        "type": "input",
        "description": "Active-high output enable shared by drivers C and D. When high, both C and D differential outputs are enabled; when low, both C and D outputs are forced to TRI-STATE (high impedance)."
      },
      {
        "number": "13",
        "name": "OUTPUT_D_INV",
        "type": "tri_state",
        "description": "Inverting differential line-driver output for channel D. Complement of pin 14; enters TRI-STATE when C/D control (pin 12) is low."
      },
      {
        "number": "14",
        "name": "OUTPUT_D_NI",
        "type": "tri_state",
        "description": "Non-inverting differential line-driver output for channel D. Drives VOH >= 2.5V at IOH = -20 mA or VOL <= 0.5V at IOL = 48 mA; enters TRI-STATE when C/D control (pin 12) is low."
      },
      {
        "number": "15",
        "name": "INPUT_D",
        "type": "input",
        "description": "TTL-compatible data input for driver channel D. VIL <= 0.8V, VIH >= 2.0V; PNP-buffered input to minimize source loading."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply rail, 4.75 V to 5.25 V (nominal 5 V). Typical ICC = 50 mA active, 35 mA in TRI-STATE; bypass locally to GND (pin 8) with a 0.1 uF ceramic capacitor."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603058176522526720",
        "pages": null,
        "sha256": "34ce555d2e59d400",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ds3487n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ds3487n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e071c377eb2df6fb20f22180b2e2240db29b32c980b0bf74a9a5af7eceac02f7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "DIP-16",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "variants": [
    {
      "mpn": "DS3487NN",
      "kind": "packaging"
    },
    {
      "mpn": "DS3487NM/TR",
      "kind": "packaging"
    },
    {
      "mpn": "DS3487NMT/TR",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ds3487n"
  ],
  "discovery_pitch": "DS3487N (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ds3487n.kicad_sym",
    "ds3487n.kicad_mod",
    "ds3487n.glb",
    "ds3487n.step",
    "ds3487n.lbr",
    "docs/hero.png",
    "docs/ds3487n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T20:06:17.650Z"
}