SN74CBT3257DBR

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  "slug": "sn74cbt3257dbr",
  "title": "SN74CBT3257DBR",
  "brief": "Texas Instruments Signal Switches, Multiplexers, Decoders, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "SN74CBT3257DBR",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-16-208mil",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74cbt3257",
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    "distributor_links": {
      "lcsc": 2674560,
      "digikey": "296-6436-2-ND",
      "mouser": "595-SN74CBT3257DBR"
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    "distributor_check": {
      "checked_at": "2026-10-03T09:16:11Z",
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        "status": "found",
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        "pn": "595-SN74CBT3257DBR",
        "status": "found",
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    "pins": [
      {
        "number": "1",
        "name": "S",
        "type": "input",
        "description": "TTL-compatible select input for multiplexer path control."
      },
      {
        "number": "2",
        "name": "1B1",
        "type": "bidirectional",
        "description": "Channel 1 B1 FET switch port."
      },
      {
        "number": "3",
        "name": "1B2",
        "type": "bidirectional",
        "description": "Channel 1 B2 FET switch port."
      },
      {
        "number": "4",
        "name": "1A",
        "type": "bidirectional",
        "description": "Channel 1 A FET switch port."
      },
      {
        "number": "5",
        "name": "2B1",
        "type": "bidirectional",
        "description": "Channel 2 B1 FET switch port."
      },
      {
        "number": "6",
        "name": "2B2",
        "type": "bidirectional",
        "description": "Channel 2 B2 FET switch port."
      },
      {
        "number": "7",
        "name": "2A",
        "type": "bidirectional",
        "description": "Channel 2 A FET switch port."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, negative supply reference."
      },
      {
        "number": "9",
        "name": "3A",
        "type": "bidirectional",
        "description": "Channel 3 A FET switch port."
      },
      {
        "number": "10",
        "name": "3B2",
        "type": "bidirectional",
        "description": "Channel 3 B2 FET switch port."
      },
      {
        "number": "11",
        "name": "3B1",
        "type": "bidirectional",
        "description": "Channel 3 B1 FET switch port."
      },
      {
        "number": "12",
        "name": "4A",
        "type": "bidirectional",
        "description": "Channel 4 A FET switch port."
      },
      {
        "number": "13",
        "name": "4B2",
        "type": "bidirectional",
        "description": "Channel 4 B2 FET switch port."
      },
      {
        "number": "14",
        "name": "4B1",
        "type": "bidirectional",
        "description": "Channel 4 B1 FET switch port."
      },
      {
        "number": "15",
        "name": "OE",
        "type": "input",
        "description": "TTL-compatible output enable control input, active low."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_out",
        "description": "Positive supply voltage, 4 to 5.5 V recommended operating range."
      }
    ],
    "provenance": {
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        "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": [],
        "pages_sent": 16,
        "cost_usd": 0.1525,
        "at": "2026-10-03T09:15:48"
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      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74cbt3257",
        "pages": 16,
        "sha256": "71e61043466ffef3",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SSOP-16-208mil",
      "Category": "Logic",
      "Pins": "16"
    }
  },
  "variants": [],
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  "discovery_pitch": "SN74CBT3257DBR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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