SN74HCT541N

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74hct541n",
  "title": "SN74HCT541N",
  "brief": "TI(德州仪器) Buffers, Drivers, Receivers, Transceivers, DIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "sn74hct541n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SN74HCT541N",
    "manufacturer": "TI(德州仪器)",
    "package": "DIP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/sn74hct541",
    "parts": {
      "symbol": "sn74hct541n.kicad_sym",
      "footprint": "sn74hct541n.kicad_mod",
      "model_3d": "sn74hct541n-hero.glb",
      "model_3d_plain": "sn74hct541n-etched.glb",
      "model_3d_step": "sn74hct541n-etched.step",
      "model_3d_step_plain": "sn74hct541n.step",
      "lbr": "sn74hct541n.lbr"
    },
    "distributor_links": {
      "lcsc": "C354420",
      "digikey": "296-1619-5-ND",
      "mouser": "595-SN74HCT541N"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T04:18:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-1619-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74HCT541N",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE1",
        "type": "input",
        "description": "Output enable 1; when OE1 or OE2 is high, all eight outputs are forced to the high-impedance state, so outputs are active only when both enables are low."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Data input for buffer channel 1, passed non-inverted to Y1 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Data input for buffer channel 2, passed non-inverted to Y2 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "input",
        "description": "Data input for buffer channel 3, passed non-inverted to Y3 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "input",
        "description": "Data input for buffer channel 4, passed non-inverted to Y4 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "input",
        "description": "Data input for buffer channel 5, passed non-inverted to Y5 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "input",
        "description": "Data input for buffer channel 6, passed non-inverted to Y6 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "input",
        "description": "Data input for buffer channel 7, passed non-inverted to Y7 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "input",
        "description": "Data input for buffer channel 8, passed non-inverted to Y8 when the outputs are enabled; inputs must stay between 0 V and VCC and unused inputs must be tied to VCC or GND."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "11",
        "name": "Y8",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 8 that follows A8 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "12",
        "name": "Y7",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 7 that follows A7 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "13",
        "name": "Y6",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 6 that follows A6 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "14",
        "name": "Y5",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 5 that follows A5 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "15",
        "name": "Y4",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 4 that follows A4 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "16",
        "name": "Y3",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 3 that follows A3 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "17",
        "name": "Y2",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 2 that follows A2 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "18",
        "name": "Y1",
        "type": "tri_state",
        "description": "Three-state buffered output of channel 1 that follows A1 and can drive up to 15 LSTTL loads (±6 mA at 5 V); it is high impedance when OE1 or OE2 is high."
      },
      {
        "number": "19",
        "name": "OE2",
        "type": "input",
        "description": "Output enable 2; when OE2 or OE1 is high, all eight outputs are forced to the high-impedance state, so outputs are active only when both enables are low."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.5 V to 5.5 V recommended (5 V nominal), with a 0.1-µF bypass capacitor placed as close to the pin as possible."
      }
    ],
    "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's pin diagram (page 3) is scrambled in text extraction and does not explicitly list pi; The datasheet does not describe OE1/OE2 as 'active low' in words; the enable sense was taken from th; The package is listed as PDIP (N), 20 pins, in the ordering table and package list. The pinout is sh",
          "4/20 pins cited to the wrong page (name found elsewhere): ['11:Y8@p7', '12:Y7@p7', '13:Y6@p7', '14:Y5@p7']"
        ],
        "pages_sent": 30,
        "cost_usd": 0.0967,
        "at": "2026-10-19T04:18:39"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/sn74hct541",
        "pages": 30,
        "sha256": "429686d50f7863c5",
        "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": "sn74hct541n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          26.162,
          6.98
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74hct541n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "centre_offset_mm": 0,
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        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TI(德州仪器)",
      "Package": "DIP-20",
      "Category": "Logic",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "429686d50f7863c5be3c44d7bd4c18b3b746a1e5816add1ff182d16905a62d92",
      "rows": [
        {
          "name": "Supply voltage range",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input clamp current",
          "symbol": "IIK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VI < 0 or VI > VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output clamp current",
          "symbol": "IOK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VO < 0 or VO > VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Continuous output current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -35,
          "typ": null,
          "max": 35,
          "conditions": "VO = 0 to VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Continuous current through VCC or GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -70,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "VCC = 4.5 V to 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "VCC = 4.5 V to 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VI",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input transition rise and fall time",
          "symbol": "∆t/∆v",
          "kind": "recommended_operating",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating free-air temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": 4.499,
          "max": null,
          "conditions": "VI = VIH or VIL; IOH = −20 µA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.84,
          "typ": 4.3,
          "max": null,
          "conditions": "VI = VIH or VIL; IOH = −6 mA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.001,
          "max": 0.1,
          "conditions": "VI = VIH or VIL; IOL = 20 µA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.17,
          "max": 0.33,
          "conditions": "VI = VIH or VIL; IOL = 6 mA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "nA",
          "min": -1000,
          "typ": 0.1,
          "max": 1000,
          "conditions": "VI = VCC or 0; VCC = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Off-state (high-impedance) output current",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -5,
          "typ": 0.01,
          "max": 5,
          "conditions": "VO = VCC or 0; VI = VIH or VIL; VCC = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 8,
          "max": 80,
          "conditions": "VI = VCC or 0; IO = 0; VCC = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current increase per TTL-level input",
          "symbol": "∆ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.4,
          "max": 2.9,
          "conditions": "One input at 0.5 V or 2.4 V, other inputs at 0 or VCC; VCC = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "Ci",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 3,
          "max": 10,
          "conditions": "VCC = 4.5 V to 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay A to Y",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 13,
          "max": 29,
          "conditions": "CL = 50 pF; VCC = 4.5 V; A to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay A to Y",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 12,
          "max": 26,
          "conditions": "CL = 50 pF; VCC = 5.5 V; A to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Enable time OE to Y",
          "symbol": "ten",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 21,
          "max": 38,
          "conditions": "CL = 50 pF; VCC = 4.5 V; OE to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Enable time OE to Y",
          "symbol": "ten",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 19,
          "max": 34,
          "conditions": "CL = 50 pF; VCC = 5.5 V; OE to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Disable time OE to Y",
          "symbol": "tdis",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 19,
          "max": 38,
          "conditions": "CL = 50 pF; VCC = 4.5 V; OE to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Disable time OE to Y",
          "symbol": "tdis",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 18,
          "max": 34,
          "conditions": "CL = 50 pF; VCC = 5.5 V; OE to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output transition time Y",
          "symbol": "tt",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 8,
          "max": 15,
          "conditions": "CL = 50 pF; VCC = 4.5 V; Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output transition time Y",
          "symbol": "tt",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 7,
          "max": 14,
          "conditions": "CL = 50 pF; VCC = 5.5 V; Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay A to Y",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 42,
          "conditions": "CL = 150 pF; VCC = 4.5 V; A to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay A to Y",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 19,
          "max": 38,
          "conditions": "CL = 150 pF; VCC = 5.5 V; A to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Enable time OE to Y",
          "symbol": "ten",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 26,
          "max": 50,
          "conditions": "CL = 150 pF; VCC = 4.5 V; OE to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Enable time OE to Y",
          "symbol": "ten",
          "kind": "timing",
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          "typ": 25,
          "max": 45,
          "conditions": "CL = 150 pF; VCC = 5.5 V; OE to Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output transition time Y",
          "symbol": "tt",
          "kind": "timing",
          "unit": "ns",
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          "typ": 17,
          "max": 53,
          "conditions": "CL = 150 pF; VCC = 4.5 V; Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output transition time Y",
          "symbol": "tt",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 14,
          "max": 48,
          "conditions": "CL = 150 pF; VCC = 5.5 V; Y",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 84.6,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 72.5,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
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