AIP1638

{
  "schema_version": 1,
  "type": "component",
  "slug": "aip1638",
  "title": "AIP1638",
  "brief": "Wuxi I-core Elec LED Display Drivers, SOP-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "display modules - led drivers - display drivers",
    "aip1638",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AIP1638",
    "manufacturer": "Wuxi I-core Elec",
    "package": "SOP-28-300mil",
    "pin_count": 28,
    "category": "Display Modules / LED Drivers / Display Drivers",
    "subcategory": "LED Display Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/011f4031877649fe8d41824e0bcd57ac.pdf",
    "parts": {
      "symbol": "aip1638.kicad_sym",
      "footprint": "aip1638.kicad_mod",
      "model_3d": "aip1638-hero.glb",
      "model_3d_plain": "aip1638-etched.glb",
      "model_3d_step": "aip1638-etched.step",
      "model_3d_step_plain": "aip1638.step",
      "lbr": "aip1638.lbr"
    },
    "distributor_links": {
      "lcsc": "C83883"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T03:26:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K1",
        "type": "input",
        "description": "Key-scan data input whose data is latched at the end of the display cycle; has 10kΩ internal pull-down."
      },
      {
        "number": "2",
        "name": "K2",
        "type": "input",
        "description": "Key-scan data input whose data is latched at the end of the display cycle; has 10kΩ internal pull-down."
      },
      {
        "number": "3",
        "name": "K3",
        "type": "input",
        "description": "Key-scan data input whose data is latched at the end of the display cycle; has 10kΩ internal pull-down."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic supply, 5V±10% (recommended 3 to 5.5V)."
      },
      {
        "number": "5",
        "name": "SEG1/KS1",
        "type": "output",
        "description": "Segment 1 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS1."
      },
      {
        "number": "6",
        "name": "SEG2/KS2",
        "type": "output",
        "description": "Segment 2 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS2."
      },
      {
        "number": "7",
        "name": "SEG3/KS3",
        "type": "output",
        "description": "Segment 3 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS3."
      },
      {
        "number": "8",
        "name": "SEG4/KS4",
        "type": "output",
        "description": "Segment 4 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS4."
      },
      {
        "number": "9",
        "name": "SEG5/KS5",
        "type": "output",
        "description": "Segment 5 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS5."
      },
      {
        "number": "10",
        "name": "SEG6/KS6",
        "type": "output",
        "description": "Segment 6 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS6."
      },
      {
        "number": "11",
        "name": "SEG7/KS7",
        "type": "output",
        "description": "Segment 7 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS7."
      },
      {
        "number": "12",
        "name": "SEG8/KS8",
        "type": "output",
        "description": "Segment 8 output, P-channel open-drain (connect to LED anode), also used as key-scan line KS8."
      },
      {
        "number": "13",
        "name": "SEG9",
        "type": "output",
        "description": "Segment 9 output, P-channel open-drain (connect to LED anode)."
      },
      {
        "number": "14",
        "name": "SEG10",
        "type": "output",
        "description": "Segment 10 output, P-channel open-drain (connect to LED anode)."
      },
      {
        "number": "15",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic supply, 5V±10% (recommended 3 to 5.5V)."
      },
      {
        "number": "16",
        "name": "GR7",
        "type": "output",
        "description": "Grid 7 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "17",
        "name": "GR8",
        "type": "output",
        "description": "Grid 8 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Logic ground, connect to system ground."
      },
      {
        "number": "19",
        "name": "GR1",
        "type": "output",
        "description": "Grid 1 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "20",
        "name": "GR2",
        "type": "output",
        "description": "Grid 2 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "21",
        "name": "GR3",
        "type": "output",
        "description": "Grid 3 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "22",
        "name": "GR4",
        "type": "output",
        "description": "Grid 4 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "23",
        "name": "GR5",
        "type": "output",
        "description": "Grid 5 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "24",
        "name": "GR6",
        "type": "output",
        "description": "Grid 6 digit output, N-channel open-drain (connect to LED cathode)."
      },
      {
        "number": "25",
        "name": "GND",
        "type": "power_in",
        "description": "Logic ground, connect to system ground."
      },
      {
        "number": "26",
        "name": "DIO",
        "type": "bidirectional",
        "description": "Serial data input/output on CLK rising edge, LSB first; N-channel open-drain output needing an external 1k-10k pull-up (10k recommended) when reading keys."
      },
      {
        "number": "27",
        "name": "CLK",
        "type": "input",
        "description": "Clock input; serial data is input/output on the rising edge."
      },
      {
        "number": "28",
        "name": "STB",
        "type": "input",
        "description": "Chip select that initializes the serial interface on rising or falling edge; first byte after STB low is the command, and CLK is ignored when STB is high."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin table lists pins by range from text; the pin diagram (Figure 1) is an image and not verified. Th",
          "4/28 pins cited to the wrong page (name found elsewhere): ['2:K2@p3', '21:GR3@p3', '22:GR4@p3', '23:GR5@p3']"
        ],
        "pages_sent": 17,
        "cost_usd": 0.1209,
        "at": "2026-10-23T03:26:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/011f4031877649fe8d41824e0bcd57ac.pdf",
        "pages": 17,
        "sha256": "7a29285e47b59992",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ecc34510e8f74b6103a72c2f24133ad80006c738972a56531d1221b277fcecdb",
        "checked": "2026-10-23",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Wuxi I-core Elec",
      "Package": "SOP-28-300mil",
      "Category": "Display Modules / LED Drivers / Display Drivers",
      "Pins": "28"
    },
    "characteristics": {
      "version": 1,
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          "name": "Logic supply voltage",
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        {
          "name": "LED SEG drive output current",
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          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -50,
          "typ": null,
          "max": null,
          "conditions": "",
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        {
          "name": "LED GR drive output current",
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          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
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        {
          "name": "Power dissipation",
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          "unit": "mW",
          "min": null,
          "typ": null,
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        {
          "name": "Operating ambient temperature",
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        {
          "name": "Storage temperature",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "Soldering temperature",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "10 s",
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          "name": "Logic supply voltage",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": 5,
          "max": 5.5,
          "conditions": "Tamb=-20~+70°C, GND=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "min 0.7VDD, max VDD",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.3,
          "conditions": "max 0.3VDD",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output current",
          "symbol": "IOH1",
          "kind": "electrical",
          "unit": "mA",
          "min": -20,
          "typ": -25,
          "max": -40,
          "conditions": "SEG1~SEG10, Vo = VDD-2V; Tamb=-20~+70°C, VDD=4.5~5.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output current",
          "symbol": "IOH2",
          "kind": "electrical",
          "unit": "mA",
          "min": -20,
          "typ": -30,
          "max": -50,
          "conditions": "SEG1~SEG10, Vo = VDD-3V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output current",
          "symbol": "IOL1",
          "kind": "electrical",
          "unit": "mA",
          "min": 80,
          "typ": 140,
          "max": null,
          "conditions": "GR1~GR8, Vo=0.3V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output current (DIO)",
          "symbol": "Idout",
          "kind": "electrical",
          "unit": "mA",
          "min": 4,
          "typ": null,
          "max": null,
          "conditions": "VO = 0.4V, dout",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output current tolerance",
          "symbol": "Itolsg",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VO = VDD-3V, SEG1~SEG10",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output pull-down resistance",
          "symbol": "RL",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "K1~K3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VI=VDD/GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "CLK, DIO, STB; min 0.7VDD",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "CLK, DIO, STB; max 0.3VDD",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Hysteresis voltage",
          "symbol": "VH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.35,
          "max": null,
          "conditions": "CLK, DIO, STB",
          "source_page": 4,
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        },
        {
          "name": "Dynamic supply current",
          "symbol": "IDDdyn",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "no load, display off",
          "source_page": 4,
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        },
        {
          "name": "Oscillation frequency",
          "symbol": "Fosc",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 400,
          "max": null,
          "conditions": "Tamb=-20~+70°C, VDD=4.5~5.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Oscillation frequency tolerance",
          "symbol": "Fosc",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "built-in RC oscillator 400KHz±5%",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time",
          "symbol": "Tplz",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "CLK→DIO, CL=15pF, RL=10kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time",
          "symbol": "Tpzl",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "CLK→DIO, CL=15pF, RL=10kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Rise time SEG",
          "symbol": "TTZH1",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "SEG1~SEG10, CL=300pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Rise time GR",
          "symbol": "TTZH2",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "GR1~GR8, CL=300pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Fall time",
          "symbol": "TTHZ",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "CL=300pF, SEGN, GRN",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum clock frequency",
          "symbol": "Fmax",
          "kind": "timing",
          "unit": "MHz",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "duty cycle 50%",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "CI",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Clock pulse width",
          "symbol": "PWCLK",
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          "min": 400,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
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          "name": "Strobe pulse width",
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          "kind": "timing",
          "unit": "µs",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Data setup time",
          "symbol": "tSETUP",
          "kind": "timing",
          "unit": "ns",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Data hold time",
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          "unit": "ns",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "CLK→STB time",
          "symbol": "tCLK",
          "kind": "timing",
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          "typ": null,
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          "conditions": "CLK↑→STB↑",
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          "source": "datasheet"
        },
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          "name": "Wait time",
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          "kind": "timing",
          "unit": "µs",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "CLK↑→CLK↓",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "AIP1638 (Wuxi I-core Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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    "public": true
  }
}