74LV123DB

{
  "slug": "74lv123db",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Monostable Multivibrators, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic ics",
    "74lv123db",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74lv123db.kicad_sym",
    "74lv123db.kicad_mod",
    "74lv123db.glb",
    "74lv123db.step",
    "74lv123db.lbr",
    "docs/hero.png",
    "docs/74lv123db-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74lv123db-hero.glb",
    "74lv123db-hero.overlay.json",
    "74lv123db-etched.glb"
  ],
  "component": {
    "mpn": "74LV123DB",
    "manufacturer": "Nexperia",
    "package": "SSOP-16-208mil",
    "pin_count": 16,
    "category": "Logic ICs",
    "subcategory": "Monostable Multivibrators",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/74LV123DB.pdf",
    "parts": {
      "symbol": "74lv123db.kicad_sym",
      "footprint": "74lv123db.kicad_mod",
      "model_3d": "74lv123db-hero.glb",
      "model_3d_plain": "74lv123db-etched.glb",
      "model_3d_step": "74lv123db-etched.step",
      "model_3d_step_plain": "74lv123db.step",
      "lbr": "74lv123db.lbr"
    },
    "distributor_links": {
      "lcsc": "C547882",
      "mouser": "771-74LV123DB"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T20:08:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "771-74LV123DB",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1A",
        "type": "input",
        "description": "Negative-edge triggered input 1 of the gated monostable; the active LOW-going edge triggers the output pulse."
      },
      {
        "number": "2",
        "name": "1B",
        "type": "input",
        "description": "Positive-edge triggered input 1 of the monostable; the active HIGH-going edge triggers or retriggers the output pulse."
      },
      {
        "number": "3",
        "name": "1RD",
        "type": "input",
        "description": "Direct reset input 1; a LOW level (positive-edge triggered) terminates the output pulse and inhibits triggering."
      },
      {
        "number": "4",
        "name": "~1Q",
        "type": "output",
        "description": "Active LOW output 1 of the monostable (overline lost in the text layer; the pin is the complementary output 1Q̅)."
      },
      {
        "number": "5",
        "name": "2Q",
        "type": "output",
        "description": "Active HIGH output 2 of the monostable."
      },
      {
        "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 for the output pulse timing, with REXT specified from 2 kΩ to 1000 kΩ at VCC = 3.0 V to 3.6 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages."
      },
      {
        "number": "9",
        "name": "2A",
        "type": "input",
        "description": "Negative-edge triggered input 2 of the gated monostable; the active LOW-going edge triggers the output pulse."
      },
      {
        "number": "10",
        "name": "2B",
        "type": "input",
        "description": "Positive-edge triggered input 2 of the monostable; the active HIGH-going edge triggers or retriggers the output pulse."
      },
      {
        "number": "11",
        "name": "2RD",
        "type": "input",
        "description": "Direct reset input 2; a LOW level (positive-edge triggered) terminates the output pulse and inhibits triggering."
      },
      {
        "number": "12",
        "name": "~2Q",
        "type": "output",
        "description": "Active LOW output 2 of the monostable (overline lost in the text layer; the pin is the complementary output 2Q̅)."
      },
      {
        "number": "13",
        "name": "1Q",
        "type": "output",
        "description": "Active HIGH output 1 of the monostable."
      },
      {
        "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 for the output pulse timing, with REXT specified from 2 kΩ to 1000 kΩ at VCC = 3.0 V to 3.6 V."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; the device is guaranteed to function down to 1.0 V and the recommended operating range is 1.0 V to 5.5 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The text layer drops the overlines on the complementary outputs. Pin names were taken from Table 2 a; The package hint 'SSOP-16-208mil' is not stated in the datasheet. The matching package is SSOP16 (SO"
        ],
        "pages_sent": 23,
        "cost_usd": 0.0942,
        "at": "2026-10-28T20:08:45"
      },
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/74LV123DB.pdf",
        "pages": 23,
        "sha256": "c806815404acd6cb",
        "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": "74lv123db.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          6.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d0e11e46aeca5dbaa5c4bb538f3f4899761267cabdeba6486325ae9e979c03ef",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74lv123db-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          6.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "221d257037467f761bd524898d1bb93b5607551953d20f083da5ffee301c019d",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}