SL2.1A

{
  "schema_version": 1,
  "type": "component",
  "slug": "sl2-1a",
  "title": "SL2.1A",
  "brief": "CoreChips SL2 1A USB Converters, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sl2.1a"
  ],
  "component": {
    "mpn": "SL2.1A",
    "manufacturer": "CoreChips SL2 1A",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "USB Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/df332af74440545569134d5952707942.pdf",
    "parts": {
      "symbol": "sl2-1a.kicad_sym",
      "footprint": "sl2-1a.kicad_mod",
      "model_3d": "sl2-1a-etched.glb",
      "model_3d_plain": "sl2-1a.glb",
      "model_3d_step": "sl2-1a-etched.step",
      "model_3d_step_plain": "sl2-1a.step",
      "lbr": "sl2-1a.lbr"
    },
    "distributor_links": {
      "lcsc": "C192893"
    },
    "pins": [
      {
        "number": "1",
        "name": "DM4",
        "type": "bidirectional",
        "description": "Downstream Port 4 USB D- signal. Connects to the D- line of downstream USB device 4 with internal 15 kΩ pull-down (Rpd) and integrated 45 Ω high-speed termination."
      },
      {
        "number": "2",
        "name": "DP4",
        "type": "bidirectional",
        "description": "Downstream Port 4 USB D+ signal. Connects to the D+ line of downstream USB device 4 with internal 15 kΩ pull-down (Rpd) and integrated 45 Ω high-speed termination."
      },
      {
        "number": "3",
        "name": "DM3",
        "type": "bidirectional",
        "description": "Downstream Port 3 USB D- signal. Connects to the D- line of downstream USB device 3 with internal 15 kΩ pull-down and 45 Ω high-speed termination."
      },
      {
        "number": "4",
        "name": "DP3",
        "type": "bidirectional",
        "description": "Downstream Port 3 USB D+ signal. Connects to the D+ line of downstream USB device 3 with internal 15 kΩ pull-down and 45 Ω high-speed termination."
      },
      {
        "number": "5",
        "name": "DM2",
        "type": "bidirectional",
        "description": "Downstream Port 2 USB D- signal. Connects to the D- line of downstream USB device 2 with internal 15 kΩ pull-down and 45 Ω high-speed termination."
      },
      {
        "number": "6",
        "name": "DP2",
        "type": "bidirectional",
        "description": "Downstream Port 2 USB D+ signal. Connects to the D+ line of downstream USB device 2 with internal 15 kΩ pull-down and 45 Ω high-speed termination."
      },
      {
        "number": "7",
        "name": "DM1",
        "type": "bidirectional",
        "description": "Downstream Port 1 USB D- signal. Connects to the D- line of downstream USB device 1 with internal 15 kΩ pull-down and 45 Ω high-speed termination."
      },
      {
        "number": "8",
        "name": "DP1",
        "type": "bidirectional",
        "description": "Downstream Port 1 USB D+ signal. Connects to the D+ line of downstream USB device 1 with internal 15 kΩ pull-down and 45 Ω high-speed termination."
      },
      {
        "number": "9",
        "name": "UDM",
        "type": "bidirectional",
        "description": "Upstream port USB D- signal. Connects to the host's D- line with internal 1.5 kΩ pull-up (Rpu) for high-speed device announcement and 45 Ω HS termination."
      },
      {
        "number": "10",
        "name": "UDP",
        "type": "bidirectional",
        "description": "Upstream port USB D+ signal. Connects to the host's D+ line with internal 1.5 kΩ pull-up (Rpu) and 45 Ω HS termination."
      },
      {
        "number": "11",
        "name": "VCC5",
        "type": "power_in",
        "description": "5 V main supply input. Feeds the internal 5V-to-3.3V LDO; single-supply operation for the whole chip."
      },
      {
        "number": "12",
        "name": "VSS",
        "type": "power_in",
        "description": "Chip ground (0 V) reference for all analog and digital supplies."
      },
      {
        "number": "13",
        "name": "VDD33",
        "type": "power_out",
        "description": "3.3 V LDO output derived from VCC5. Must be bypassed with a 4.7 µF capacitor to ground placed close to the pin; feeds the internal 3.3V-to-1.8V LDO through the PCB."
      },
      {
        "number": "14",
        "name": "VDD18",
        "type": "power_out",
        "description": "Digital 1.8 V LDO output. Must be bypassed with a 4.7 µF capacitor to ground placed close to the pin."
      },
      {
        "number": "15",
        "name": "XOUT",
        "type": "output",
        "description": "12 MHz crystal oscillator output pin. Connects to one terminal of a 12 MHz / CL=20 pF / 20 ppm crystal; no external load capacitors are required per datasheet."
      },
      {
        "number": "16",
        "name": "XIN",
        "type": "input",
        "description": "12 MHz crystal oscillator input pin. Connects to the other terminal of the 12 MHz / 20 pF / 20 ppm crystal; feeds the internal 12→480 MHz PLL."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/df332af74440545569134d5952707942.pdf",
        "pages": 21,
        "sha256": "9a55c6649643b949",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -4.445
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "sl2-1a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sl2-1a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "46fdcb0c03d5f361164f0973649dc2c2cb0a097bf8b6acbcffc3e61ef69ea6af",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "CoreChips",
      "Package": "SOP-16",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sl2.1a"
  ],
  "discovery_pitch": "SL2.1A (CoreChips SL2 1A) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sl2-1a.kicad_sym",
    "sl2-1a.kicad_mod",
    "sl2-1a.glb",
    "sl2-1a.step",
    "sl2-1a-etched.step",
    "sl2-1a.lbr",
    "docs/hero.png",
    "docs/sl2-1a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SL2.1A",
      "kind": "packaging"
    },
    {
      "mpn": "SL2.1S",
      "kind": "unknown"
    },
    {
      "mpn": "SL2.2S",
      "kind": "unknown"
    },
    {
      "mpn": "SL2.2Q",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T06:08:45.784Z"
}