SN74F253DR

{
  "slug": "sn74f253dr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74f253dr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74f253dr.kicad_sym",
    "sn74f253dr.kicad_mod",
    "sn74f253dr.glb",
    "sn74f253dr.step",
    "sn74f253dr.lbr",
    "docs/hero.png",
    "docs/sn74f253dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74f253dr-hero.glb",
    "sn74f253dr-hero.overlay.json"
  ],
  "component": {
    "mpn": "SN74F253DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74f253.pdf",
    "parts": {
      "symbol": "sn74f253dr.kicad_sym",
      "footprint": "sn74f253dr.kicad_mod",
      "model_3d": "sn74f253dr-hero.glb",
      "model_3d_plain": "sn74f253dr.glb",
      "model_3d_step": "sn74f253dr-etched.step",
      "model_3d_step_plain": "sn74f253dr.step",
      "lbr": "sn74f253dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2674505",
      "digikey": "296-31764-2-ND",
      "mouser": "595-SN74F253DR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:05:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-31764-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74F253DR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1G",
        "type": "input",
        "description": "Strobe input for the first 4-line section; the 1Y output is disabled (high impedance) when this input is high."
      },
      {
        "number": "2",
        "name": "B",
        "type": "input",
        "description": "Select input B, common to both 4-line sections, that together with A chooses which data input is routed to the outputs."
      },
      {
        "number": "3",
        "name": "1C3",
        "type": "input",
        "description": "Data input 3 of the first 4-line section, selected when A and B are both high."
      },
      {
        "number": "4",
        "name": "1C2",
        "type": "input",
        "description": "Data input 2 of the first 4-line section, selected when B is high and A is low."
      },
      {
        "number": "5",
        "name": "1C1",
        "type": "input",
        "description": "Data input 1 of the first 4-line section, selected when A is high and B is low."
      },
      {
        "number": "6",
        "name": "1C0",
        "type": "input",
        "description": "Data input 0 of the first 4-line section, selected when A and B are both low."
      },
      {
        "number": "7",
        "name": "1Y",
        "type": "tri_state",
        "description": "3-state output of the first 4-line section; drives the bus at a low or high logic level when enabled and is high impedance when 1G is high."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin of the device."
      },
      {
        "number": "9",
        "name": "2Y",
        "type": "tri_state",
        "description": "3-state output of the second 4-line section; drives the bus at a low or high logic level when enabled and is high impedance when 2G is high."
      },
      {
        "number": "10",
        "name": "2C0",
        "type": "input",
        "description": "Data input 0 of the second 4-line section, selected when A and B are both low."
      },
      {
        "number": "11",
        "name": "2C1",
        "type": "input",
        "description": "Data input 1 of the second 4-line section, selected when A is high and B is low."
      },
      {
        "number": "12",
        "name": "2C2",
        "type": "input",
        "description": "Data input 2 of the second 4-line section, selected when B is high and A is low."
      },
      {
        "number": "13",
        "name": "2C3",
        "type": "input",
        "description": "Data input 3 of the second 4-line section, selected when A and B are both high."
      },
      {
        "number": "14",
        "name": "A",
        "type": "input",
        "description": "Select input A, common to both 4-line sections, that together with B chooses which data input is routed to the outputs."
      },
      {
        "number": "15",
        "name": "2G",
        "type": "input",
        "description": "Strobe input for the second 4-line section; the 2Y output is disabled (high impedance) when this input is high."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply pin; recommended supply voltage is 4.5 V to 5.5 V (5 V nominal) and absolute maximum is 7 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 datasheet covers the SN54F253/SN74F253 family and gives one 16-pin top-view pinout for the D (SO; Pin-to-function mapping for the select and data inputs (which C input is chosen for each A/B combina; The datasheet states no separate electrical limit for the GND pin, so its description is limited to "
        ],
        "pages_sent": 13,
        "cost_usd": 0.0554,
        "at": "2026-10-08T16:05:02"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74f253.pdf",
        "pages": 13,
        "sha256": "a8da140d625fbea2",
        "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": [
      {
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
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          1.75
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        "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": "sn74f253dr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17996df885d07c8c738fce25c510e0bff2020d6252218910261a06031b33bf01",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}