SN74HC244PW

{
  "slug": "sn74hc244pw",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74hc244pw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74hc244pw.kicad_sym",
    "sn74hc244pw.kicad_mod",
    "sn74hc244pw.glb",
    "sn74hc244pw.step",
    "sn74hc244pw.lbr",
    "docs/hero.png",
    "docs/sn74hc244pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74hc244pw-hero.glb",
    "sn74hc244pw-hero.overlay.json",
    "sn74hc244pw-etched.glb"
  ],
  "component": {
    "mpn": "SN74HC244PW",
    "manufacturer": "lingxingic",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590923053428137984",
    "parts": {
      "symbol": "sn74hc244pw.kicad_sym",
      "footprint": "sn74hc244pw.kicad_mod",
      "model_3d": "sn74hc244pw-hero.glb",
      "model_3d_plain": "sn74hc244pw-etched.glb",
      "model_3d_step": "sn74hc244pw-etched.step",
      "model_3d_step_plain": "sn74hc244pw.step",
      "lbr": "sn74hc244pw.lbr"
    },
    "distributor_links": {
      "lcsc": "C22374049",
      "digikey": "2156-SN74HC244PW-ND",
      "mouser": "595-SN74HC244PW"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T07:38:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-SN74HC244PW-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "595-SN74HC244PW",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1OE",
        "type": "input",
        "description": "Active-low output enable for outputs 1Y0 to 1Y3; when high, the outputs go to high impedance (Z)."
      },
      {
        "number": "2",
        "name": "1A0",
        "type": "input",
        "description": "Data input of the first 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "3",
        "name": "2Y0",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the second buffer; high impedance when 2OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "4",
        "name": "1A1",
        "type": "input",
        "description": "Data input of the first 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "5",
        "name": "2Y1",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the second buffer; high impedance when 2OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "6",
        "name": "1A2",
        "type": "input",
        "description": "Data input of the first 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "7",
        "name": "2Y2",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the second buffer; high impedance when 2OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "8",
        "name": "1A3",
        "type": "input",
        "description": "Data input of the first 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "9",
        "name": "2Y3",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the second buffer; high impedance when 2OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V)."
      },
      {
        "number": "11",
        "name": "2A3",
        "type": "input",
        "description": "Data input of the second 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "12",
        "name": "1Y3",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the first buffer; high impedance when 1OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "13",
        "name": "2A2",
        "type": "input",
        "description": "Data input of the second 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "14",
        "name": "1Y2",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the first buffer; high impedance when 1OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "15",
        "name": "2A1",
        "type": "input",
        "description": "Data input of the second 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "16",
        "name": "1Y1",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the first buffer; high impedance when 1OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "17",
        "name": "2A0",
        "type": "input",
        "description": "Data input of the second 4-bit buffer; input clamp diodes are built in, so a series resistor can connect the input to a voltage above VCC."
      },
      {
        "number": "18",
        "name": "1Y0",
        "type": "tri_state",
        "description": "Non-inverting three-state bus output of the first buffer; high impedance when 1OE is high, and output current is limited to ±35 mA."
      },
      {
        "number": "19",
        "name": "2OE",
        "type": "input",
        "description": "Active-low output enable for outputs 2Y0 to 2Y3; when high, the outputs go to high impedance (Z)."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; the SN74HC244 operates from 2.0 V to 6.0 V with an absolute maximum of 7.0 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 page 5 pin diagram text is scrambled by text extraction. Pin assignments were taken from the pin; The page 3 ordering table is garbled, so the row-to-MPN mapping for SN74HC244PW is inferred. The TSS; Pin descriptions for the data inputs and outputs combine the device-wide statements (clamp diodes, o"
        ],
        "pages_sent": 19,
        "cost_usd": 0.0846,
        "at": "2026-10-19T07:36:28"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590923053428137984",
        "pages": 19,
        "sha256": "56daa4e3385f582a",
        "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"
    },
    "models_3d": [
      {
        "file": "sn74hc244pw.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": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74hc244pw-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": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "521b7b05a5da938343395e69b6249888d2d4e46db82d227b15ed070d64e3fb2c",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}