SN74CBT3253CDBR

{
  "slug": "sn74cbt3253cdbr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Signal Switches, Multiplexers, Decoders, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74cbt3253cdbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74cbt3253cdbr.kicad_sym",
    "sn74cbt3253cdbr.kicad_mod",
    "sn74cbt3253cdbr.glb",
    "sn74cbt3253cdbr.step",
    "sn74cbt3253cdbr.lbr",
    "docs/hero.png",
    "docs/sn74cbt3253cdbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "SN74CBT3253CDBR",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-16-208mil",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74cbt3253c",
    "parts": {
      "symbol": "sn74cbt3253cdbr.kicad_sym",
      "footprint": "sn74cbt3253cdbr.kicad_mod",
      "model_3d": "sn74cbt3253cdbr-etched.glb",
      "model_3d_plain": "sn74cbt3253cdbr.glb",
      "model_3d_step": "sn74cbt3253cdbr-etched.step",
      "model_3d_step_plain": "sn74cbt3253cdbr.step",
      "lbr": "sn74cbt3253cdbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2674583",
      "digikey": "296-19205-2-ND",
      "mouser": "595-SN74CBT3253CDBR"
    },
    "distributor_check": {
      "checked_at": "2026-09-30T01:33:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-19205-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74CBT3253CDBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Output-enable input for multiplexer 1, active low; when high, a high-impedance state exists between the 1A and 1B ports."
      },
      {
        "number": "2",
        "name": "S1",
        "type": "input",
        "description": "Select input S1 that, with S0, selects which B port connects to the A port in each multiplexer/demultiplexer; control inputs accept TTL or 5-V/3.3-V CMOS levels."
      },
      {
        "number": "3",
        "name": "1B4",
        "type": "bidirectional",
        "description": "Multiplexer 1 B4 data port, connected to 1A when OE is low and S1 S0 = H H; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "4",
        "name": "1B3",
        "type": "bidirectional",
        "description": "Multiplexer 1 B3 data port, connected to 1A when OE is low and S1 S0 = H L; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "5",
        "name": "1B2",
        "type": "bidirectional",
        "description": "Multiplexer 1 B2 data port, connected to 1A when OE is low and S1 S0 = L H; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "6",
        "name": "1B1",
        "type": "bidirectional",
        "description": "Multiplexer 1 B1 data port, connected to 1A when OE is low and S1 S0 = L L; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "7",
        "name": "1A",
        "type": "bidirectional",
        "description": "Multiplexer 1 common A data port, connected to one of 1B1-1B4 as selected by S1 and S0 when 1OE is low."
      },
      {
        "number": "9",
        "name": "2A",
        "type": "bidirectional",
        "description": "Multiplexer 2 common A data port, connected to one of 2B1-2B4 as selected by S1 and S0 when 2OE is low."
      },
      {
        "number": "10",
        "name": "2B1",
        "type": "bidirectional",
        "description": "Multiplexer 2 B1 data port, connected to 2A when OE is low and S1 S0 = L L; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "11",
        "name": "2B2",
        "type": "bidirectional",
        "description": "Multiplexer 2 B2 data port, connected to 2A when OE is low and S1 S0 = L H; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "12",
        "name": "2B3",
        "type": "bidirectional",
        "description": "Multiplexer 2 B3 data port, connected to 2A when OE is low and S1 S0 = H L; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "13",
        "name": "2B4",
        "type": "bidirectional",
        "description": "Multiplexer 2 B4 data port, connected to 2A when OE is low and S1 S0 = H H; supports 0 to 5-V signaling with undershoot protection to -2 V."
      },
      {
        "number": "14",
        "name": "S0",
        "type": "input",
        "description": "Select input S0 that, with S1, selects which B port connects to the A port in each multiplexer/demultiplexer; control inputs accept TTL or 5-V/3.3-V CMOS levels."
      },
      {
        "number": "15",
        "name": "2OE",
        "type": "input",
        "description": "Output-enable input for multiplexer 2, active low; when high, a high-impedance state exists between the 2A and 2B ports."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pins 8 (GND) and 16 (VCC) are not explicitly labeled in the logic diagram; assignments are based on ",
          "1/16 pins cited to the wrong page (name found elsewhere): ['16:VCC@p3']"
        ],
        "pages_sent": 26,
        "cost_usd": 0.176,
        "at": "2026-09-30T01:33:41"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74cbt3253c",
        "pages": 26,
        "sha256": "89e75930549ef68c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  }
}