74LCX244FT

{
  "schema_version": 1,
  "type": "component",
  "slug": "74lcx244ft",
  "title": "74LCX244FT",
  "brief": "TOSHIBA Buffer/Driver/Transceiver, TSSOP-20. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "74lcx244ft"
  ],
  "component": {
    "mpn": "74LCX244FT",
    "manufacturer": "TOSHIBA",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffer/Driver/Transceiver",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2106070734_TOSHIBA-74LCX244FT_C2675684.pdf",
    "parts": {
      "symbol": "74lcx244ft.kicad_sym",
      "footprint": "74lcx244ft.kicad_mod",
      "model_3d": "74lcx244ft-etched.glb",
      "model_3d_plain": "74lcx244ft.glb",
      "model_3d_step": "74lcx244ft-etched.step",
      "model_3d_step_plain": "74lcx244ft.step",
      "lbr": "74lcx244ft.lbr"
    },
    "distributor_links": {
      "digikey": "74LCX244FTTR-ND",
      "mouser": "757-74LCX244FT",
      "lcsc": "C2675684"
    },
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Active-low output enable for bank 1 (drives outputs 1Y1-1Y4). When low, bank-1 outputs follow their A inputs; when high, bank-1 outputs are in high-impedance (Z) state."
      },
      {
        "number": "2",
        "name": "1A1",
        "type": "input",
        "description": "Bank 1 channel 1 data input. 5-V tolerant CMOS input; passes non-inverted to 1Y1 when 1OE is low."
      },
      {
        "number": "3",
        "name": "2Y4",
        "type": "tri_state",
        "description": "Bank 2 channel 4 buffered output. Drives the non-inverted state of 2A4 when 2OE is low; Hi-Z when 2OE is high. IOH/IOL = 24 mA min (VCC = 3.0 V)."
      },
      {
        "number": "4",
        "name": "1A2",
        "type": "input",
        "description": "Bank 1 channel 2 data input. 5-V tolerant CMOS input; passes non-inverted to 1Y2 when 1OE is low."
      },
      {
        "number": "5",
        "name": "2Y3",
        "type": "tri_state",
        "description": "Bank 2 channel 3 buffered output. Drives the non-inverted state of 2A3 when 2OE is low; Hi-Z when 2OE is high."
      },
      {
        "number": "6",
        "name": "1A3",
        "type": "input",
        "description": "Bank 1 channel 3 data input. 5-V tolerant CMOS input; passes non-inverted to 1Y3 when 1OE is low."
      },
      {
        "number": "7",
        "name": "2Y2",
        "type": "tri_state",
        "description": "Bank 2 channel 2 buffered output. Drives the non-inverted state of 2A2 when 2OE is low; Hi-Z when 2OE is high."
      },
      {
        "number": "8",
        "name": "1A4",
        "type": "input",
        "description": "Bank 1 channel 4 data input. 5-V tolerant CMOS input; passes non-inverted to 1Y4 when 1OE is low."
      },
      {
        "number": "9",
        "name": "2Y1",
        "type": "tri_state",
        "description": "Bank 2 channel 1 buffered output. Drives the non-inverted state of 2A1 when 2OE is low; Hi-Z when 2OE is high."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V) for the device."
      },
      {
        "number": "11",
        "name": "2A1",
        "type": "input",
        "description": "Bank 2 channel 1 data input. 5-V tolerant CMOS input; passes non-inverted to 2Y1 when 2OE is low."
      },
      {
        "number": "12",
        "name": "1Y4",
        "type": "tri_state",
        "description": "Bank 1 channel 4 buffered output. Drives the non-inverted state of 1A4 when 1OE is low; Hi-Z when 1OE is high."
      },
      {
        "number": "13",
        "name": "2A2",
        "type": "input",
        "description": "Bank 2 channel 2 data input. 5-V tolerant CMOS input; passes non-inverted to 2Y2 when 2OE is low."
      },
      {
        "number": "14",
        "name": "1Y3",
        "type": "tri_state",
        "description": "Bank 1 channel 3 buffered output. Drives the non-inverted state of 1A3 when 1OE is low; Hi-Z when 1OE is high."
      },
      {
        "number": "15",
        "name": "2A3",
        "type": "input",
        "description": "Bank 2 channel 3 data input. 5-V tolerant CMOS input; passes non-inverted to 2Y3 when 2OE is low."
      },
      {
        "number": "16",
        "name": "1Y2",
        "type": "tri_state",
        "description": "Bank 1 channel 2 buffered output. Drives the non-inverted state of 1A2 when 1OE is low; Hi-Z when 1OE is high."
      },
      {
        "number": "17",
        "name": "2A4",
        "type": "input",
        "description": "Bank 2 channel 4 data input. 5-V tolerant CMOS input; passes non-inverted to 2Y4 when 2OE is low."
      },
      {
        "number": "18",
        "name": "1Y1",
        "type": "tri_state",
        "description": "Bank 1 channel 1 buffered output. Drives the non-inverted state of 1A1 when 1OE is low; Hi-Z when 1OE is high."
      },
      {
        "number": "19",
        "name": "2OE",
        "type": "input",
        "description": "Active-low output enable for bank 2 (drives outputs 2Y1-2Y4). When low, bank-2 outputs follow their A inputs; when high, bank-2 outputs are in high-impedance (Z) state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. Operating range 1.65 to 3.6 V (data retention from 1.5 V). Inputs and outputs are 5-V tolerant regardless of VCC."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2106070734_TOSHIBA-74LCX244FT_C2675684.pdf",
        "pages": 9,
        "sha256": "869201119557fe6a",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -2.925
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-20_4.4x6.5mm_P0.65mm@sha256:b7ca3a31dd45c122",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74LCX244",
      "logic_family": "74LCX",
      "function_code": "244",
      "function_class": "Buffer",
      "function_name": "Octal Buffer/Driver, Non-Inverting, 3-State",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74lcx244ft.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74lcx244ft-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7360e0bd21a636ba7e7d2b0158af2ddebeac77b4f04f89e088188cfbb9e08011",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TOSHIBA",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74lcx244ft"
  ],
  "discovery_pitch": "74LCX244FT (TOSHIBA) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74lcx244ft.kicad_sym",
    "74lcx244ft.kicad_mod",
    "74lcx244ft.glb",
    "74lcx244ft.step",
    "74lcx244ft-etched.step",
    "74lcx244ft.lbr",
    "docs/hero.png",
    "docs/74lcx244ft-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:07:01.563Z"
}