PCA9546ADR

{
  "slug": "pca9546adr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Interface - Specialized, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "pca9546adr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "pca9546adr.kicad_sym",
    "pca9546adr.kicad_mod",
    "pca9546adr.glb",
    "pca9546adr.step",
    "pca9546adr.lbr",
    "docs/hero.png",
    "docs/pca9546adr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pca9546adr-hero.glb",
    "pca9546adr-hero.overlay.json"
  ],
  "component": {
    "mpn": "PCA9546ADR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://www.ti.com/lit/ds/symlink/pca9546a.pdf",
    "parts": {
      "symbol": "pca9546adr.kicad_sym",
      "footprint": "pca9546adr.kicad_mod",
      "model_3d": "pca9546adr-hero.glb",
      "model_3d_plain": "pca9546adr.glb",
      "model_3d_step": "pca9546adr-etched.step",
      "model_3d_step_plain": "pca9546adr.step",
      "lbr": "pca9546adr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2674051",
      "digikey": "296-21770-2-ND",
      "mouser": "595-PCA9546ADR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T19:32:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-21770-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-PCA9546ADR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Address input 0; connect directly to VCC or ground."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Address input 1; connect directly to VCC or ground."
      },
      {
        "number": "3",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input that resets the I2C state machine and deselects all channels; connect to VDPUM through a pull-up resistor if not used."
      },
      {
        "number": "4",
        "name": "SD0",
        "type": "bidirectional",
        "description": "Serial data for channel 0; connect to VDPU0 through a pull-up resistor."
      },
      {
        "number": "5",
        "name": "SC0",
        "type": "bidirectional",
        "description": "Serial clock for channel 0; connect to VDPU0 through a pull-up resistor."
      },
      {
        "number": "6",
        "name": "SD1",
        "type": "bidirectional",
        "description": "Serial data for channel 1; connect to VDPU1 through a pull-up resistor."
      },
      {
        "number": "7",
        "name": "SC1",
        "type": "bidirectional",
        "description": "Serial clock for channel 1; connect to VDPU1 through a pull-up resistor."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "9",
        "name": "SD2",
        "type": "bidirectional",
        "description": "Serial data for channel 2; connect to VDPU2 through a pull-up resistor."
      },
      {
        "number": "10",
        "name": "SC2",
        "type": "bidirectional",
        "description": "Serial clock for channel 2; connect to VDPU2 through a pull-up resistor."
      },
      {
        "number": "11",
        "name": "SD3",
        "type": "bidirectional",
        "description": "Serial data for channel 3; connect to VDPU3 through a pull-up resistor."
      },
      {
        "number": "12",
        "name": "SC3",
        "type": "bidirectional",
        "description": "Serial clock for channel 3; connect to VDPU3 through a pull-up resistor."
      },
      {
        "number": "13",
        "name": "A2",
        "type": "input",
        "description": "Address input 2; connect directly to VCC or ground."
      },
      {
        "number": "14",
        "name": "SCL",
        "type": "bidirectional",
        "description": "Serial clock line for the upstream master I2C bus; connect to VDPUM through a pull-up resistor."
      },
      {
        "number": "15",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data line for the upstream master I2C bus; connect to VDPUM through a pull-up resistor."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply power; operating supply range is 2.3 V to 5.5 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin-to-number mapping was taken from the Table 5-1 column for D, DGV, DW, PW and RGY packages (page ; Pin 16 VCC description combines the Table 5-1 entry with the recommended operating supply range from; The datasheet pin table does not assign a type to each pin; the ERC types here are inferred from the"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0606,
        "at": "2026-10-08T19:31:37"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/pca9546a.pdf",
        "pages": 43,
        "sha256": "fd5fad659b8c8ffd",
        "source_tier": "mfr"
      },
      "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": "pca9546adr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "pca9546adr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3314dc51d78c3c5059645a57d99cb44d8a47f4af958a41166abb5792e826343f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}