SN74CBTLV3257DR

{
  "slug": "sn74cbtlv3257dr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Analog Switches, Multiplexers, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "sn74cbtlv3257dr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74cbtlv3257dr.kicad_sym",
    "sn74cbtlv3257dr.kicad_mod",
    "sn74cbtlv3257dr.glb",
    "sn74cbtlv3257dr.step",
    "sn74cbtlv3257dr.lbr",
    "docs/hero.png",
    "docs/sn74cbtlv3257dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74cbtlv3257dr-hero.glb",
    "sn74cbtlv3257dr-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN74CBTLV3257DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74cbtlv3257.pdf",
    "parts": {
      "symbol": "sn74cbtlv3257dr.kicad_sym",
      "footprint": "sn74cbtlv3257dr.kicad_mod",
      "model_3d": "sn74cbtlv3257dr-hero.glb",
      "model_3d_plain": "sn74cbtlv3257dr.glb",
      "model_3d_step": "sn74cbtlv3257dr-etched.step",
      "model_3d_step_plain": "sn74cbtlv3257dr.step",
      "lbr": "sn74cbtlv3257dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C10012",
      "digikey": "296-9137-2-ND",
      "mouser": "595-SN74CBTLV3257DR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T23:00:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-9137-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74CBTLV3257DR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "S",
        "type": "input",
        "description": "Select input that controls the data-flow path of the multiplexer/demultiplexer (S0 in the body text, S in the pin table)."
      },
      {
        "number": "2",
        "name": "1B1",
        "type": "bidirectional",
        "description": "Channel 1 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "3",
        "name": "1B2",
        "type": "bidirectional",
        "description": "Channel 1 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "4",
        "name": "1A",
        "type": "bidirectional",
        "description": "Channel 1 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports."
      },
      {
        "number": "5",
        "name": "2B1",
        "type": "bidirectional",
        "description": "Channel 2 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "6",
        "name": "2B2",
        "type": "bidirectional",
        "description": "Channel 2 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "7",
        "name": "2A",
        "type": "bidirectional",
        "description": "Channel 2 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "9",
        "name": "3A",
        "type": "bidirectional",
        "description": "Channel 3 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports."
      },
      {
        "number": "10",
        "name": "3B2",
        "type": "bidirectional",
        "description": "Channel 3 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "11",
        "name": "3B1",
        "type": "bidirectional",
        "description": "Channel 3 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "12",
        "name": "4A",
        "type": "bidirectional",
        "description": "Channel 4 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports."
      },
      {
        "number": "13",
        "name": "4B2",
        "type": "bidirectional",
        "description": "Channel 4 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "14",
        "name": "4B1",
        "type": "bidirectional",
        "description": "Channel 4 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports."
      },
      {
        "number": "15",
        "name": "OE",
        "type": "input",
        "description": "Active-low output enable; the FET multiplexers/demultiplexers are disabled when OE is high, and OE must be tied to VCC through a pullup resistor to hold the high-impedance state during power up or down."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply pin; the absolute maximum supply voltage is -0.5 V to 4.6 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: The SOIC-16 pin numbers come from the shared 16-pin top view (Figure 4-1, page 3, covering D, DBQ, D; The pin table gives only short functional descriptions. Limits for the channel pins were taken from ; Ordering list shows SN74CBTLV3257DR as Active in SOIC (D), while SN74CBTLV3257D (no R) is Obsolete. "
        ],
        "pages_sent": 10,
        "cost_usd": 0.0653,
        "at": "2026-10-07T23:00:28"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74cbtlv3257.pdf",
        "pages": 41,
        "sha256": "ddb143a7fecbb5ee",
        "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": "sn74cbtlv3257dr.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74cbtlv3257dr-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": "967dbed6a13c3f06cc79b3683039738b116ed3366a262f83994ca1511abf1d73",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}