CD74HC221M96

{
  "slug": "cd74hc221m96",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Monostable Multivibrators, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cd74hc221m96",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd74hc221m96.kicad_sym",
    "cd74hc221m96.kicad_mod",
    "cd74hc221m96.glb",
    "cd74hc221m96.step",
    "cd74hc221m96.lbr",
    "docs/hero.png",
    "docs/cd74hc221m96-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "CD74HC221M96",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Monostable Multivibrators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/cd74hc221",
    "parts": {
      "symbol": "cd74hc221m96.kicad_sym",
      "footprint": "cd74hc221m96.kicad_mod",
      "model_3d": "cd74hc221m96-etched.glb",
      "model_3d_plain": "cd74hc221m96.glb",
      "model_3d_step": "cd74hc221m96-etched.step",
      "model_3d_step_plain": "cd74hc221m96.step",
      "lbr": "cd74hc221m96.lbr"
    },
    "distributor_links": {
      "lcsc": "C133954"
    },
    "pins": [
      {
        "number": "1",
        "name": "1A",
        "type": "input",
        "description": "Trailing-edge (active-LOW falling) trigger input for monostable 1; triggers on HIGH-to-LOW transition when 1B is HIGH and 1R is HIGH."
      },
      {
        "number": "2",
        "name": "1B",
        "type": "input",
        "description": "Leading-edge (active-HIGH rising) Schmitt-trigger input for monostable 1; triggers on LOW-to-HIGH transition when 1A is LOW and 1R is HIGH; rise/fall time unlimited."
      },
      {
        "number": "3",
        "name": "1R",
        "type": "input",
        "description": "Active-LOW overriding reset input for monostable 1; a LOW level immediately terminates the output pulse, forcing 1Q LOW and 1Q̄ HIGH; minimum pulse width 14 ns at 4.5 V."
      },
      {
        "number": "4",
        "name": "1Q̄",
        "type": "output",
        "description": "Buffered complementary output of monostable 1; idles HIGH, pulses LOW for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."
      },
      {
        "number": "5",
        "name": "2Q",
        "type": "output",
        "description": "Buffered true output of monostable 2; idles LOW, pulses HIGH for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."
      },
      {
        "number": "6",
        "name": "2CX",
        "type": "passive",
        "description": "External timing capacitor (CX) connection for monostable 2; CX is connected between this pin and GND; minimum CX = 0 pF."
      },
      {
        "number": "7",
        "name": "2CXRX",
        "type": "passive",
        "description": "External timing resistor-capacitor junction for monostable 2; RX connected between this pin and VCC, CX between pin 6 and GND; minimum RX = 500 Ω typical."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) supply reference; maximum DC VCC or ground current ICC = ±50 mA."
      },
      {
        "number": "9",
        "name": "2A",
        "type": "input",
        "description": "Trailing-edge (active-LOW falling) trigger input for monostable 2; triggers on HIGH-to-LOW transition when 2B is HIGH and 2R is HIGH."
      },
      {
        "number": "10",
        "name": "2B",
        "type": "input",
        "description": "Leading-edge (active-HIGH rising) Schmitt-trigger input for monostable 2; triggers on LOW-to-HIGH transition when 2A is LOW and 2R is HIGH; rise/fall time unlimited."
      },
      {
        "number": "11",
        "name": "2R",
        "type": "input",
        "description": "Active-LOW overriding reset input for monostable 2; a LOW level immediately terminates the output pulse, forcing 2Q LOW and 2Q̄ HIGH; minimum pulse width 14 ns at 4.5 V."
      },
      {
        "number": "12",
        "name": "2Q̄",
        "type": "output",
        "description": "Buffered complementary output of monostable 2; idles HIGH, pulses LOW for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."
      },
      {
        "number": "13",
        "name": "1Q",
        "type": "output",
        "description": "Buffered true output of monostable 1; idles LOW, pulses HIGH for tW = 0.7 × RX × CX; VOH ≥ 4.4 V and VOL ≤ 0.1 V at VCC = 4.5 V, IO = ±0.02 mA."
      },
      {
        "number": "14",
        "name": "1CX",
        "type": "passive",
        "description": "External timing capacitor (CX) connection for monostable 1; CX is connected between this pin and GND; minimum CX = 0 pF."
      },
      {
        "number": "15",
        "name": "1CXRX",
        "type": "passive",
        "description": "External timing resistor-capacitor junction for monostable 1; RX connected between this pin and VCC, CX between pin 14 and GND; minimum RX = 500 Ω typical."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage; HC type 2 V to 6 V operating range, absolute maximum −0.5 V to 7 V; quiescent ICC ≤ 8 µA typical at 6 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: PAGE 1 contains a pinout diagram for CD74HC221 (PDIP, SOIC, SOP, TSSOP) but the ASCII representation"
        ],
        "pages_sent": 25,
        "cost_usd": 0.5667,
        "at": "2026-09-22T01:27:54"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/cd74hc221",
        "pages": 25,
        "sha256": "7f1f24f5229cfed7",
        "source_tier": "lcsc"
      },
      "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": "cd74hc221m96.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc221m96-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5393fe2067b26a0f218bbf764a53b00c6d81eb3608547e38c279541cd7b89b66",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}