main
Ray Set visibility: public 293d963 7d ago
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000
{
  "schema_version": 1,
  "type": "component",
  "slug": "74vhct540aft",
  "title": "74VHCT540AFT",
  "brief": "TOSHIBA Buffers, Drivers, Receivers, Transceivers, TSSOP-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",
    "74vhct540aft",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "74VHCT540AFT",
    "manufacturer": "TOSHIBA",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225348601278464",
    "parts": {
      "symbol": "74vhct540aft.kicad_sym",
      "footprint": "74vhct540aft.kicad_mod",
      "model_3d": "74vhct540aft-hero.glb",
      "model_3d_plain": "74vhct540aft-etched.glb",
      "model_3d_step": "74vhct540aft-etched.step",
      "model_3d_step_plain": "74vhct540aft.step",
      "lbr": "74vhct540aft.lbr"
    },
    "distributor_links": {
      "lcsc": "C2975841",
      "digikey": "74VHCT540AFTTR-ND",
      "mouser": "757-74VHCT540AFT"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T04:18:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "74VHCT540AFTTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "757-74VHCT540AFT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "G1",
        "type": "input",
        "description": "Active-low output enable 1; when G1 or G2 is high the outputs are in the high-impedance state."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Data input 1; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Data input 2; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "input",
        "description": "Data input 3; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "input",
        "description": "Data input 4; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "input",
        "description": "Data input 5; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "input",
        "description": "Data input 6; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "input",
        "description": "Data input 7; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "input",
        "description": "Data input 8; inputs are TTL-compatible (VIL 0.8 V max, VIH 2.0 V min) and tolerate 0 to 5.5 V."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference."
      },
      {
        "number": "11",
        "name": "Y8",
        "type": "tri_state",
        "description": "Inverted 3-state output 8 (inverse of A8); high-impedance when G1 or G2 is high."
      },
      {
        "number": "12",
        "name": "Y7",
        "type": "tri_state",
        "description": "Inverted 3-state output 7 (inverse of A7); high-impedance when G1 or G2 is high."
      },
      {
        "number": "13",
        "name": "Y6",
        "type": "tri_state",
        "description": "Inverted 3-state output 6 (inverse of A6); high-impedance when G1 or G2 is high."
      },
      {
        "number": "14",
        "name": "Y5",
        "type": "tri_state",
        "description": "Inverted 3-state output 5 (inverse of A5); high-impedance when G1 or G2 is high."
      },
      {
        "number": "15",
        "name": "Y4",
        "type": "tri_state",
        "description": "Inverted 3-state output 4 (inverse of A4); high-impedance when G1 or G2 is high."
      },
      {
        "number": "16",
        "name": "Y3",
        "type": "tri_state",
        "description": "Inverted 3-state output 3 (inverse of A3); high-impedance when G1 or G2 is high."
      },
      {
        "number": "17",
        "name": "Y2",
        "type": "tri_state",
        "description": "Inverted 3-state output 2 (inverse of A2); high-impedance when G1 or G2 is high."
      },
      {
        "number": "18",
        "name": "Y1",
        "type": "tri_state",
        "description": "Inverted 3-state output 1 (inverse of A1); high-impedance when G1 or G2 is high."
      },
      {
        "number": "19",
        "name": "G2",
        "type": "input",
        "description": "Active-low output enable 2; when G1 or G2 is high the outputs are in the high-impedance state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, operating range 4.5 to 5.5 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.3286,
        "at": "2026-10-16T04:18:14"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225348601278464",
        "pages": 8,
        "sha256": "3a3485b289292fb2",
        "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": "74vhct540aft.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": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74vhct540aft-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": "10a65eda81f8bc33f2f6e16d14f5cbc10d5100e3fc20c5b69accc81ab8501ee1",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TOSHIBA",
      "Package": "TSSOP-20",
      "Category": "Logic",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3a3485b289292fb2f4958c5946ffd8f8a3b5bcb62b8686fa73e45339452da8f5",
      "rows": [
        {
          "name": "Input voltage (absolute max)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage (absolute max)",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (absolute max)",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "Output in OFF state (Note1)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (absolute max)",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "High or Low state (Note2); upper limit printed as VCC + 0.5",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input diode current",
          "symbol": "IIK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": null,
          "conditions": "Printed as single value -20",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output diode current",
          "symbol": "IOK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VOUT < GND, VOUT > VCC (Note3)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "High or Low state (Note2)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VCC/ground current",
          "symbol": "ICC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -75,
          "typ": null,
          "max": 75,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 180,
          "conditions": "Ta = -40 to 85°C; derate -3.25 mW/°C from 85 to 125°C until 50 mW (Note4)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage (operating)",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (operating)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (operating)",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 5.5,
          "conditions": "Output in OFF state (Note1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (operating)",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "High or Low state (Note2); upper limit printed as VCC",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "Topr",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input rise and fall times",
          "symbol": "dt/dv",
          "kind": "recommended_operating",
          "unit": "ns/V",
          "min": 0,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "Ta = 25°C; VCC = 4.5 to 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "Ta = 25°C; VCC = 4.5 to 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": 4.5,
          "max": null,
          "conditions": "Ta = 25°C; VIN = VIH or VIL; IOH = -50 µA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.94,
          "typ": null,
          "max": null,
          "conditions": "Ta = 25°C; VIN = VIH or VIL; IOH = -8 mA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0,
          "max": 0.1,
          "conditions": "Ta = 25°C; VIN = VIH or VIL; IOL = 50 µA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.36,
          "conditions": "Ta = 25°C; VIN = VIH or VIL; IOL = 8 mA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "3-state output OFF-state leakage current",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -0.25,
          "typ": null,
          "max": 0.25,
          "conditions": "Ta = 25°C; VOUT = VCC or GND; VCC = 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -0.1,
          "typ": null,
          "max": 0.1,
          "conditions": "Ta = 25°C; VIN = 5.5 V or GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "Ta = 25°C; VIN = VCC or GND; VCC = 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current (additional, TTL input)",
          "symbol": "ICCT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.35,
          "conditions": "Ta = 25°C; per input VIN = 3.4 V; other input VCC or GND; VCC = 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current (Power-OFF)",
          "symbol": "IOPD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "Ta = 25°C; VOUT = 5.5 V; VCC = 0 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": null,
          "max": null,
          "conditions": "Ta = -40 to 85°C; VIN = VIH or VIL; IOH = -50 µA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.8,
          "typ": null,
          "max": null,
          "conditions": "Ta = -40 to 85°C; VIN = VIH or VIL; IOH = -8 mA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "Ta = -40 to 85°C; VIN = VIH or VIL; IOL = 50 µA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.44,
          "conditions": "Ta = -40 to 85°C; VIN = VIH or VIL; IOL = 8 mA; VCC = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "3-state output OFF-state leakage current",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -2.5,
          "typ": null,
          "max": 2.5,
          "conditions": "Ta = -40 to 85°C; VOUT = VCC or GND; VCC = 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Ta = -40 to 85°C; VIN = 5.5 V or GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "Ta = -40 to 85°C; VIN = VCC or GND; VCC = 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current (additional, TTL input)",
          "symbol": "ICCT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "Ta = -40 to 85°C; per input VIN = 3.4 V; other input VCC or GND; VCC = 5.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current (Power-OFF)",
          "symbol": "IOPD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Ta = -40 to 85°C; VOUT = 5.5 V; VCC = 0 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "Ta = -40 to 125°C; VCC = 4.5 to 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "Ta = -40 to 125°C; VCC = 4.5 to 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": null,
          "max": null,
          "conditions": "Ta = -40 to 125°C; VIN = VIH or VIL; IOH = -50 µA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.7,
          "typ": null,
          "max": null,
          "conditions": "Ta = -40 to 125°C; VIN = VIH or VIL; IOH = -8 mA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "Ta = -40 to 125°C; VIN = VIH or VIL; IOL = 50 µA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.55,
          "conditions": "Ta = -40 to 125°C; VIN = VIH or VIL; IOL = 8 mA; VCC = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "3-state output OFF-state leakage current",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "Ta = -40 to 125°C; VOUT = VCC or GND; VCC = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "Ta = -40 to 125°C; VIN = 5.5 V or GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "Ta = -40 to 125°C; VIN = VCC or GND; VCC = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current (additional, TTL input)",
          "symbol": "ICCT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "Ta = -40 to 125°C; per input VIN = 3.4 V; other input VCC or GND; VCC = 5.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current (Power-OFF)",
          "symbol": "IOPD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Ta = -40 to 125°C; VOUT = 5.5 V; VCC = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time (tPLH,tPHL)",
          "symbol": "tPLH,tPHL",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 5.4,
          "max": 7.4,
          "conditions": "Ta = 25°C; VCC = 5.0 ± 0.5 V; CL = 15 pF; RL = 1 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time (tPLH,tPHL)",
          "symbol": "tPLH,tPHL",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 5.9,
          "max": 8.4,
          "conditions": "Ta = 25°C; VCC = 5.0 ± 0.5 V; CL = 50 pF; RL = 1 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "3-state output enable time (tPZL,tPZH)",
          "symbol": "tPZL,tPZH",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 8.3,
          "max": 11.3,
          "conditions": "Ta = 25°C; VCC = 5.0 ± 0.5 V; CL = 15 pF; RL = 1 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "3-state output enable time (tPZL,tPZH)",
          "symbol": "tPZL,tPZH",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 8.8,
          "max": 12.3,
          "conditions": "Ta = 25°C; VCC = 5.0 ± 0.5 V; CL = 50 pF; RL = 1 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "3-state output disable time (tPLZ,tPHZ)",
          "symbol": "tPLZ,tPHZ",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 9.4,
          "max": 11.9,
          "conditions": "Ta = 25°C; VCC = 5.0 ± 0.5 V; CL = 50 pF; RL = 1 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output skew (tosLH,tosHL)",
          "symbol": "tosLH,tosHL",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Ta = 25°C; VCC = 5.0 ± 0.5 V; CL = 50 pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "CIN",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Ta = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time (tPLH,tPHL)",
          "symbol": "tPLH,tPHL",
          "kind": "electrical",
          "unit": "ns",
          "min": 1,
          "typ": null,
          "max": 8.5,
          "conditions": "Ta = -40 to 85°C; VCC = 5.0 ± 0.5 V; CL = 15 pF; RL = 1 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time (tPLH,tPHL)",
          "symbol": "tPLH,tPHL",
          "kind": "electrical",
          "unit": "ns",
          "min": 1,
          "typ": null,
          "max": 9.5,
          "conditions": "Ta = -40 to 85°C; VCC = 5.0 ± 0.5 V; CL = 50 pF; RL = 1 kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time (tPLH,tPHL)",
          "symbol": "tPLH,tPHL",
          "kind": "electrical",
          "unit": "ns",
          "min": 1,
          "typ": null,
          "max": 9.5,
          "conditions": "Ta = -40 to 125°C; VCC = 5.0 ± 0.5 V; CL = 15 pF; RL = 1 kΩ",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time (tPLH,tPHL)",
          "symbol": "tPLH,tPHL",
          "kind": "electrical",
          "unit": "ns",
          "min": 1,
          "typ": null,
          "max": 10.5,
          "conditions": "Ta = -40 to 125°C; VCC = 5.0 ± 0.5 V; CL = 50 pF; RL = 1 kΩ",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74vhct540aft"
  ],
  "discovery_pitch": "74VHCT540AFT (TOSHIBA) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74vhct540aft.kicad_sym",
    "74vhct540aft.kicad_mod",
    "74vhct540aft.glb",
    "74vhct540aft.step",
    "74vhct540aft.lbr",
    "docs/hero.png",
    "docs/74vhct540aft-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74vhct540aft-hero.glb",
    "74vhct540aft-hero.overlay.json",
    "74vhct540aft-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}