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{
  "schema_version": 1,
  "type": "component",
  "slug": "cd74hc123pw",
  "title": "CD74HC123PW",
  "brief": "Texas Instruments Monostable Multivibrators, TSSOP-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",
    "cd74hc123pw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CD74HC123PW",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic ICs",
    "subcategory": "Monostable Multivibrators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd74hc123.pdf",
    "parts": {
      "symbol": "cd74hc123pw.kicad_sym",
      "footprint": "cd74hc123pw.kicad_mod",
      "model_3d": "cd74hc123pw-hero.glb",
      "model_3d_plain": "cd74hc123pw-etched.glb",
      "model_3d_step": "cd74hc123pw-etched.step",
      "model_3d_step_plain": "cd74hc123pw.step",
      "lbr": "cd74hc123pw.lbr"
    },
    "distributor_links": {
      "lcsc": "C2862972",
      "digikey": "296-25971-5-ND",
      "mouser": "595-CD74HC123PW"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T17:14:09Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-25971-5-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "595-CD74HC123PW",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1A",
        "type": "input",
        "description": "Monostable 1 trigger input A (Schmitt trigger) for trailing-edge triggering."
      },
      {
        "number": "2",
        "name": "1B",
        "type": "input",
        "description": "Monostable 1 trigger input B (Schmitt trigger) for leading-edge triggering."
      },
      {
        "number": "3",
        "name": "1R",
        "type": "input",
        "description": "Monostable 1 reset input; a LOW level terminates the output pulse."
      },
      {
        "number": "4",
        "name": "1Q̄",
        "type": "output",
        "description": "Monostable 1 buffered complementary output Q-bar."
      },
      {
        "number": "5",
        "name": "2Q",
        "type": "output",
        "description": "Monostable 2 buffered output Q."
      },
      {
        "number": "6",
        "name": "2CX",
        "type": "passive",
        "description": "Monostable 2 external timing capacitor connection (CX minimum is 0pF)."
      },
      {
        "number": "7",
        "name": "2RXCX",
        "type": "passive",
        "description": "Monostable 2 external timing resistor/capacitor junction (RX typically 5kΩ minimum; tW = 0.45 RX CX at VCC = 5V)."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "9",
        "name": "2A",
        "type": "input",
        "description": "Monostable 2 trigger input A (Schmitt trigger) for trailing-edge triggering."
      },
      {
        "number": "10",
        "name": "2B",
        "type": "input",
        "description": "Monostable 2 trigger input B (Schmitt trigger) for leading-edge triggering."
      },
      {
        "number": "11",
        "name": "2R",
        "type": "input",
        "description": "Monostable 2 reset input; a LOW level terminates the output pulse."
      },
      {
        "number": "12",
        "name": "2Q̄",
        "type": "output",
        "description": "Monostable 2 buffered complementary output Q-bar."
      },
      {
        "number": "13",
        "name": "1Q",
        "type": "output",
        "description": "Monostable 1 buffered output Q."
      },
      {
        "number": "14",
        "name": "1CX",
        "type": "passive",
        "description": "Monostable 1 external timing capacitor connection (CX minimum is 0pF)."
      },
      {
        "number": "15",
        "name": "1RXCX",
        "type": "passive",
        "description": "Monostable 1 external timing resistor/capacitor junction (RX typically 5kΩ minimum; tW = 0.45 RX CX at VCC = 5V)."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage, 2V to 6V for HC types."
      }
    ],
    "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 pinout page text is garbled: overbars on Q outputs are lost, so which of pins 4/13 and 5/12 is Q; Pins 6 and 7 (2CX and 2RXCX) and 14 and 15 (1CX and 1RXCX) were read from the functional diagram lab; The datasheet's ordering and package addendum lists CD74HC123PW as Obsolete (Call TI). The pinout is"
        ],
        "pages_sent": 24,
        "cost_usd": 0.1029,
        "at": "2026-10-30T17:13:52"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd74hc123.pdf",
        "pages": 24,
        "sha256": "062aa4848f2f6eae",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cd74hc123pw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc123pw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c4fa72110d374ed43fef9108346a11be4251bbf8f313eb030b65b66abbef156d",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "PW0016A",
      "source_page": 20,
      "D": {
        "nom_mm": 5,
        "range_mm": [
          4.9,
          5.1
        ]
      },
      "E1": {
        "nom_mm": 4.4,
        "range_mm": [
          4.3,
          4.5
        ]
      },
      "E": {
        "nom_mm": 6.4,
        "range_mm": [
          6.2,
          6.6
        ]
      },
      "e": {
        "nom_mm": 0.65,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.2,
        "range_mm": [
          null,
          1.2
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "cd74hc123pw.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-16",
      "Category": "Logic ICs",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "062aa4848f2f6eae4f984ab98cb45e715fa46d0dbee7e00c9224910db2410f0b",
      "rows": [
        {
          "name": "High Level Input Voltage (HC)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "VCC=2 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High Level Input Voltage (HC)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.15,
          "typ": null,
          "max": null,
          "conditions": "VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High Level Input Voltage (HC)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": null,
          "conditions": "VCC=6 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low Level Input Voltage (HC)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VCC=2 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low Level Input Voltage (HC)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.35,
          "conditions": "VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low Level Input Voltage (HC)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.8,
          "conditions": "VCC=6 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High Level Output Voltage, CMOS Loads",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.9,
          "typ": null,
          "max": null,
          "conditions": "VI=VIH or VIL, IO=-0.02 mA, VCC=2 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High Level Output Voltage, CMOS Loads",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": null,
          "max": null,
          "conditions": "VI=VIH or VIL, IO=-0.02 mA, VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High Level Output Voltage, CMOS Loads",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5.9,
          "typ": null,
          "max": null,
          "conditions": "VI=VIH or VIL, IO=-0.02 mA, VCC=6 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High Level Output Voltage, TTL Loads",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.7,
          "typ": null,
          "max": null,
          "conditions": "VI=VIH or VIL, IO=-4 mA, VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High Level Output Voltage, TTL Loads",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5.2,
          "typ": null,
          "max": null,
          "conditions": "VI=VIH or VIL, IO=-5.2 mA, VCC=6 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low Level Output Voltage, CMOS Loads",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VI=VIH or VIL, IO=0.02 mA, VCC=2 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low Level Output Voltage, TTL Loads",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "VI=VIH or VIL, IO=4 mA, VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage Current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VI=VCC or GND, VCC=6 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Device Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "VI=VCC or GND, IO=0, VCC=6 V, TA=-55 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, A",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": 150,
          "typ": null,
          "max": null,
          "conditions": "VCC=2 V, TA=-55 to 125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, A",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, A",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": 26,
          "typ": null,
          "max": null,
          "conditions": "VCC=6 V, TA=-55 to 125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, B",
          "symbol": "tWH",
          "kind": "timing",
          "unit": "ns",
          "min": 150,
          "typ": null,
          "max": null,
          "conditions": "VCC=2 V, TA=-55 to 125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, B",
          "symbol": "tWH",
          "kind": "timing",
          "unit": "ns",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, B",
          "symbol": "tWH",
          "kind": "timing",
          "unit": "ns",
          "min": 26,
          "typ": null,
          "max": null,
          "conditions": "VCC=6 V, TA=-55 to 125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, R",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": 150,
          "typ": null,
          "max": 150,
          "conditions": "VCC=2 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, R",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": 30,
          "typ": null,
          "max": 30,
          "conditions": "VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum Input Pulse Width, R",
          "symbol": "tWL",
          "kind": "timing",
          "unit": "ns",
          "min": 26,
          "typ": null,
          "max": 26,
          "conditions": "VCC=6 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "A and B Hold Time",
          "symbol": "tH",
          "kind": "timing",
          "unit": "ns",
          "min": 75,
          "typ": null,
          "max": 75,
          "conditions": "VCC=2 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "A and B Hold Time",
          "symbol": "tH",
          "kind": "timing",
          "unit": "ns",
          "min": 15,
          "typ": null,
          "max": 15,
          "conditions": "VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "A and B Hold Time",
          "symbol": "tH",
          "kind": "timing",
          "unit": "ns",
          "min": 13,
          "typ": null,
          "max": 13,
          "conditions": "VCC=6 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reset Removal Time",
          "symbol": "tREM",
          "kind": "timing",
          "unit": "ns",
          "min": 75,
          "typ": null,
          "max": 75,
          "conditions": "VCC=2 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reset Removal Time",
          "symbol": "tREM",
          "kind": "timing",
          "unit": "ns",
          "min": 15,
          "typ": null,
          "max": 15,
          "conditions": "VCC=4.5 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reset Removal Time",
          "symbol": "tREM",
          "kind": "timing",
          "unit": "ns",
          "min": 13,
          "typ": null,
          "max": 13,
          "conditions": "VCC=6 V, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Pulse Width, Q or Q̄",
          "symbol": "tW",
          "kind": "timing",
          "unit": "µs",
          "min": 38.2,
          "typ": null,
          "max": 51.8,
          "conditions": "VCC=5 V, RX=10kΩ, CX=10nF, TA=-55 to 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
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