74AHC123AD-Q100J

{
  "schema_version": 1,
  "type": "component",
  "slug": "74ahc123ad-q100j",
  "title": "74AHC123AD-Q100J",
  "brief": "Nexperia Monostable Multivibrators, SO-16. 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 ics",
    "74ahc123ad-q100j",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "74AHC123AD-Q100J",
    "manufacturer": "Nexperia",
    "package": "SO-16",
    "pin_count": 16,
    "category": "Logic ICs",
    "subcategory": "Monostable Multivibrators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914586729000960",
    "parts": {
      "symbol": "74ahc123ad-q100j.kicad_sym",
      "footprint": "74ahc123ad-q100j.kicad_mod",
      "model_3d": "74ahc123ad-q100j-hero.glb",
      "model_3d_plain": "74ahc123ad-q100j-etched.glb",
      "model_3d_step": "74ahc123ad-q100j-etched.step",
      "model_3d_step_plain": "74ahc123ad-q100j.step",
      "lbr": "74ahc123ad-q100j.lbr"
    },
    "distributor_links": {
      "lcsc": "C554215",
      "digikey": "1727-74AHC123AD-Q100JTR-ND",
      "mouser": "771-74AHC123ADQ100J"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T01:34:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1727-74AHC123AD-Q100JTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "771-74AHC123ADQ100J",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1A",
        "type": "input",
        "description": "Negative-edge triggered input 1; the inputs are overvoltage tolerant to 5.5 V."
      },
      {
        "number": "2",
        "name": "1B",
        "type": "input",
        "description": "Positive-edge triggered input 1; the inputs are overvoltage tolerant to 5.5 V."
      },
      {
        "number": "3",
        "name": "1RD",
        "type": "input",
        "description": "Direct reset LOW and positive-edge triggered input 1; a LOW level on this input terminates the output pulse."
      },
      {
        "number": "4",
        "name": "1Q",
        "type": "output",
        "description": "Active LOW output 1 (complement of 1Q at pin 13); the overbar is not present in the extracted text."
      },
      {
        "number": "5",
        "name": "2Q",
        "type": "output",
        "description": "Active HIGH output 2."
      },
      {
        "number": "6",
        "name": "2CEXT",
        "type": "passive",
        "description": "External capacitor connection 2; for minimum noise generation the datasheet recommends grounding this pin externally to GND (pin 8)."
      },
      {
        "number": "7",
        "name": "2REXT/CEXT",
        "type": "passive",
        "description": "External resistor and capacitor connection 2; REXT must be at least 5 kΩ at VCC = 2.0 V and at least 1 kΩ when VCC > 3.0 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V)."
      },
      {
        "number": "9",
        "name": "2A",
        "type": "input",
        "description": "Negative-edge triggered input 2; the inputs are overvoltage tolerant to 5.5 V."
      },
      {
        "number": "10",
        "name": "2B",
        "type": "input",
        "description": "Positive-edge triggered input 2; the inputs are overvoltage tolerant to 5.5 V."
      },
      {
        "number": "11",
        "name": "2RD",
        "type": "input",
        "description": "Direct reset LOW and positive-edge triggered input 2; a LOW level on this input terminates the output pulse."
      },
      {
        "number": "12",
        "name": "2Q",
        "type": "output",
        "description": "Active LOW output 2 (complement of 2Q at pin 5); the overbar is not present in the extracted text."
      },
      {
        "number": "13",
        "name": "1Q",
        "type": "output",
        "description": "Active HIGH output 1."
      },
      {
        "number": "14",
        "name": "1CEXT",
        "type": "passive",
        "description": "External capacitor connection 1; for minimum noise generation the datasheet recommends grounding this pin externally to GND (pin 8)."
      },
      {
        "number": "15",
        "name": "1REXT/CEXT",
        "type": "passive",
        "description": "External resistor and capacitor connection 1; REXT must be at least 5 kΩ at VCC = 2.0 V and at least 1 kΩ when VCC > 3.0 V."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: 2.0 V to 5.5 V for the 74AHC123A-Q100 variant (this MPN, which is CMOS input level)."
      }
    ],
    "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: In the extracted text the overbar on the complementary outputs is lost: pins 4 and 13 both read '1Q'; Table 5 gives a 2.0 V to 5.5 V supply range for the 74AHC123A-Q100 variant (this MPN); the 4.5 V to ; Pin types for the CEXT/REXT connections are assigned as passive because the datasheet does not class"
        ],
        "pages_sent": 21,
        "cost_usd": 0.0903,
        "at": "2026-10-19T01:33:55"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914586729000960",
        "pages": 21,
        "sha256": "aba0f1e26c4e70db",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "SO-16",
      "Category": "Logic ICs",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "aba0f1e26c4e70db999f93b814699cd9d19bde1d64eaea74232ed2021a6cc8bb",
      "rows": [
        {
          "name": "Supply voltage (absolute maximum)",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Input voltage (absolute maximum)",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input clamping current",
          "symbol": "IIK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": null,
          "conditions": "VI < -0.5 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output clamping current",
          "symbol": "IOK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VO < -0.5 V or VO > VCC + 0.5 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "VO = -0.5 V to (VCC + 0.5 V)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 75,
          "conditions": "",
          "source_page": 7,
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        },
        {
          "name": "Ground current",
          "symbol": "IGND",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -75,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Total power dissipation",
          "symbol": "Ptot",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "Tamb = -40 °C to +125 °C; SO16 derates linearly 12.4 mW/K above 110 °C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage (recommended)",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": 5,
          "max": 5.5,
          "conditions": "74AHC123A-Q100 column",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (recommended)",
          "symbol": "VI",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 5.5,
          "conditions": "74AHC123A-Q100 column",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (recommended)",
          "symbol": "VO",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "74AHC123A-Q100 column; max printed as VCC",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature",
          "symbol": "Tamb",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": 25,
          "max": 125,
          "conditions": "74AHC123A-Q100 column",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input transition rise and fall rate",
          "symbol": "Δt/ΔV",
          "kind": "timing",
          "unit": "ns/V",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VCC = 3.3 V ± 0.3 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input transition rise and fall rate",
          "symbol": "Δt/ΔV",
          "kind": "timing",
          "unit": "ns/V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "VCC = 5.0 V ± 0.5 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "External resistance REXT",
          "symbol": "REXT",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.0 V",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "External resistance REXT",
          "symbol": "REXT",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "VCC > 3.0 V",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": null,
          "max": null,
          "conditions": "VCC = 3.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.85,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5.5 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "LOW-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VCC = 2.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "LOW-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "VCC = 3.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "LOW-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.65,
          "conditions": "VCC = 5.5 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.9,
          "typ": 2,
          "max": null,
          "conditions": "VI = VIH or VIL; IO = -50 μA; VCC = 2.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.9,
          "typ": 3,
          "max": null,
          "conditions": "VI = VIH or VIL; IO = -50 μA; VCC = 3.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": 4.5,
          "max": null,
          "conditions": "VI = VIH or VIL; IO = -50 μA; VCC = 4.5 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "VI = VIH or VIL; IO = -4.0 mA; VCC = 3.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "HIGH-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.7,
          "typ": null,
          "max": null,
          "conditions": "VI = VIH or VIL; IO = -8.0 mA; VCC = 4.5 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "LOW-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0,
          "max": 0.1,
          "conditions": "VI = VIH or VIL; IO = 50 μA; VCC = 2.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "LOW-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.55,
          "conditions": "VI = VIH or VIL; IO = 4.0 mA; VCC = 3.0 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "μA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "nREXT/CEXT; VI = 5.5 V or GND; VCC = 0 V to 5.5 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "μA",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "pins nA, nB, nRD; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "VI = VCC or GND; IO = 0 A; VCC = 5.5 V; -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Active-state supply current (per circuit)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 160,
          "max": 280,
          "conditions": "active state (per circuit); VI = VCC or GND; VCC = 3.0 V; typ 25 °C, max -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Active-state supply current (per circuit)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 380,
          "max": 650,
          "conditions": "active state (per circuit); VI = VCC or GND; VCC = 4.5 V; typ 25 °C, max -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Active-state supply current (per circuit)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 560,
          "max": 975,
          "conditions": "active state (per circuit); VI = VCC or GND; VCC = 5.5 V; typ 25 °C, max -40 °C to +125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "CI",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay nA/nB to nQ, nQ",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 1,
          "typ": 7.4,
          "max": 26,
          "conditions": "VCC = 3.0 V to 3.6 V; CL = 15 pF; -40 °C to +125 °C",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay nA/nB to nQ, nQ",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 1,
          "typ": 10.5,
          "max": 30,
          "conditions": "VCC = 3.0 V to 3.6 V; CL = 50 pF; -40 °C to +125 °C",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay nA/nB to nQ, nQ",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 1,
          "typ": 5.1,
          "max": 15.5,
          "conditions": "VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +125 °C",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay nA/nB to nQ, nQ",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 1,
          "typ": 7.3,
          "max": 17.5,
          "conditions": "VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +125 °C",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay nRD to nQ, nQ",
          "symbol": "tpd",
          "kind": "timing",
          "unit": "ns",
          "min": 1,
          "typ": 8.2,
          "max": 28,
          "conditions": "VCC = 3.0 V to 3.6 V; CL = 15 pF; -40 °C to +125 °C",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay nRD to nQ, nQ",
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          "name": "Propagation delay nRD to nQ, nQ",
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          "name": "Propagation delay nRD to nQ, nQ (reset)",
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          "name": "Propagation delay nRD to nQ, nQ (reset)",
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          "unit": "ns",
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          "name": "Propagation delay nRD to nQ, nQ (reset)",
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          "unit": "ns",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "inputs; nA = LOW; see Fig. 5; VCC = 4.5 V to 5.5 V; -40 °C to +125 °C",
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          "symbol": "tW",
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          "conditions": "outputs nQ = LOW and nQ = HIGH; CL = 50 pF; CEXT = 0.01 μF; REXT = 10 kΩ; VCC = 3.0 V to 3.6 V; -40 °C to +125 °C",
          "source_page": 10,
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          "symbol": "tW",
          "kind": "timing",
          "unit": "ms",
          "min": 0.85,
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          "conditions": "outputs nQ = LOW and nQ = HIGH; CL = 50 pF; CEXT = 0.1 μF; REXT = 10 kΩ; VCC = 3.0 V to 3.6 V; -40 °C to +125 °C",
          "source_page": 10,
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