HTM1640

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  "schema_version": 1,
  "type": "component",
  "slug": "htm1640",
  "title": "HTM1640",
  "brief": "TDSEMIC LED Drivers, SSOP-28. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led drivers",
    "htm1640"
  ],
  "component": {
    "mpn": "HTM1640",
    "manufacturer": "TDSEMIC",
    "package": "SSOP-28",
    "pin_count": 28,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/adf95329d041690841e8822bf06384e9.pdf",
    "parts": {
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      "footprint": "htm1640.kicad_mod",
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      "model_3d_plain": "htm1640.glb",
      "model_3d_step": "htm1640-etched.step",
      "model_3d_step_plain": "htm1640.step",
      "lbr": "htm1640.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GRID12",
        "type": "output",
        "description": "Digit (grid) output 12. N-channel open-drain output driving a common-cathode digit line; up to 200 mA sink current."
      },
      {
        "number": "2",
        "name": "GRID13",
        "type": "output",
        "description": "Digit (grid) output 13. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "3",
        "name": "GRID14",
        "type": "output",
        "description": "Digit (grid) output 14. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "4",
        "name": "GRID15",
        "type": "output",
        "description": "Digit (grid) output 15. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "5",
        "name": "GRID16",
        "type": "output",
        "description": "Digit (grid) output 16. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "6",
        "name": "VSS",
        "type": "power_in",
        "description": "Logic ground. Connect to system ground (0 V). Also labeled GND on the pinout diagram."
      },
      {
        "number": "7",
        "name": "DIN",
        "type": "input",
        "description": "Serial data input. Data is changed while SCLK is low and latched when SCLK is high; transmitted LSB first. Also labeled DATA on the pinout diagram."
      },
      {
        "number": "8",
        "name": "SCLK",
        "type": "input",
        "description": "Serial clock input. Data on DIN is sampled on the rising edge. VIH = 0.7*VDD, VIL = 0.3*VDD, 0.35 V hysteresis. Also labeled CLK on the pinout diagram."
      },
      {
        "number": "9",
        "name": "SEG1",
        "type": "output",
        "description": "Segment output 1. P-channel open-drain (source) output driving an LED anode line; up to 50 mA source current."
      },
      {
        "number": "10",
        "name": "SEG2",
        "type": "output",
        "description": "Segment output 2. P-channel open-drain (source) output driving an LED anode line."
      },
      {
        "number": "11",
        "name": "SEG3",
        "type": "output",
        "description": "Segment output 3. P-channel open-drain (source) output driving an LED anode line."
      },
      {
        "number": "12",
        "name": "SEG4",
        "type": "output",
        "description": "Segment output 4. P-channel open-drain (source) output driving an LED anode line."
      },
      {
        "number": "13",
        "name": "SEG5",
        "type": "output",
        "description": "Segment output 5. P-channel open-drain (source) output driving an LED anode line."
      },
      {
        "number": "14",
        "name": "SEG6",
        "type": "output",
        "description": "Segment output 6. P-channel open-drain (source) output driving an LED anode line."
      },
      {
        "number": "15",
        "name": "SEG7",
        "type": "output",
        "description": "Segment output 7. P-channel open-drain (source) output driving an LED anode line."
      },
      {
        "number": "16",
        "name": "SEG8",
        "type": "output",
        "description": "Segment output 8. P-channel open-drain (source) output driving an LED anode line."
      },
      {
        "number": "17",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic power supply. Recommended 5 V ±10% (3.0 V to 5.5 V operating range). Absolute maximum -0.5 V to +7.0 V."
      },
      {
        "number": "18",
        "name": "GRID1",
        "type": "output",
        "description": "Digit (grid) output 1. N-channel open-drain output driving a common-cathode digit line; up to 200 mA sink current."
      },
      {
        "number": "19",
        "name": "GRID2",
        "type": "output",
        "description": "Digit (grid) output 2. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "20",
        "name": "GRID3",
        "type": "output",
        "description": "Digit (grid) output 3. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "21",
        "name": "GRID4",
        "type": "output",
        "description": "Digit (grid) output 4. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "22",
        "name": "GRID5",
        "type": "output",
        "description": "Digit (grid) output 5. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "23",
        "name": "GRID6",
        "type": "output",
        "description": "Digit (grid) output 6. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "24",
        "name": "GRID7",
        "type": "output",
        "description": "Digit (grid) output 7. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "25",
        "name": "GRID8",
        "type": "output",
        "description": "Digit (grid) output 8. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "26",
        "name": "GRID9",
        "type": "output",
        "description": "Digit (grid) output 9. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "27",
        "name": "GRID10",
        "type": "output",
        "description": "Digit (grid) output 10. N-channel open-drain output driving a common-cathode digit line."
      },
      {
        "number": "28",
        "name": "GRID11",
        "type": "output",
        "description": "Digit (grid) output 11. N-channel open-drain output driving a common-cathode digit line."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/adf95329d041690841e8822bf06384e9.pdf",
        "pages": 14,
        "sha256": "da626725a5629030",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
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        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "TDSEMIC",
      "Package": "SSOP-28",
      "Category": "LED Drivers",
      "Pins": "28"
    }
  },
  "variants": [
    {
      "mpn": "HTM1640SSOP28",
      "kind": "packaging"
    },
    {
      "mpn": "HTM1640SOP28",
      "kind": "packaging"
    }
  ],
  "sections": [
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    "readme",
    "breadcrumbs",
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  "discovery_triggers": [
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  "discovery_pitch": "HTM1640 (TDSEMIC) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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  "visibility": {
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  "updated_at": "2026-09-24T22:12:51.455Z"
}