CD74HC123M96

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd74hc123m96",
  "title": "CD74HC123M96",
  "brief": "Texas Instruments Monostable Multivibrators, SOIC-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "cd74hc123m96"
  ],
  "component": {
    "mpn": "CD74HC123M96",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Monostable Multivibrators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd74hc123m96.pdf",
    "parts": {
      "symbol": "cd74hc123m96.kicad_sym",
      "footprint": "cd74hc123m96.kicad_mod",
      "model_3d": "cd74hc123m96-etched.glb",
      "model_3d_plain": "cd74hc123m96.glb",
      "model_3d_step": "cd74hc123m96-etched.step",
      "model_3d_step_plain": "cd74hc123m96.step",
      "lbr": "cd74hc123m96.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1A",
        "type": "input",
        "description": "Channel 1 active-low trigger input (A-bar). Schmitt-trigger input; a high-to-low transition triggers a new output pulse on Q1 when B1 is high and 1R is high. Tie high if channel 1 is triggered via B1 only; do not leave floating."
      },
      {
        "number": "2",
        "name": "1B",
        "type": "input",
        "description": "Channel 1 active-high trigger input B. Schmitt-trigger input; a low-to-high transition triggers a new output pulse when 1A is low and 1R is high. Tie low if unused."
      },
      {
        "number": "3",
        "name": "1R",
        "type": "input",
        "description": "Channel 1 active-low reset (R-bar). Driving low forces 1Q low and 1Q-bar high, terminating any output pulse in progress. Tie high for normal (non-reset) operation."
      },
      {
        "number": "4",
        "name": "1Q",
        "type": "output",
        "description": "Channel 1 inverted (Q-bar) buffered output. High in the idle state and pulses low for the programmed pulse width when the channel is triggered. Standard fan-out 10 LSTTL, bus-driver fan-out 15 LSTTL."
      },
      {
        "number": "5",
        "name": "2Q",
        "type": "output",
        "description": "Channel 2 non-inverted Q buffered output. Low in the idle state and pulses high for the programmed pulse width when the channel is triggered."
      },
      {
        "number": "6",
        "name": "2Cx",
        "type": "passive",
        "description": "Channel 2 external timing capacitor connection. Connect C_X between 2Cx (pin 6) and 2RxCx (pin 7). Minimum C_X is 0 pF; C_X sets pulse width together with R_X (t_W = 0.45 * R_X * C_X at 5 V)."
      },
      {
        "number": "7",
        "name": "2RxCx",
        "type": "passive",
        "description": "Channel 2 external R_X/C_X node. R_X is connected from this pin to V_CC and C_X is connected from this pin to 2Cx (pin 6). Minimum R_X is typically 5 kΩ."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / 0 V reference for both channels."
      },
      {
        "number": "9",
        "name": "2A",
        "type": "input",
        "description": "Channel 2 active-low trigger input (A-bar). Schmitt-trigger input; a high-to-low transition triggers a new output pulse on Q2 when B2 is high and 2R is high. Tie high if channel 2 is triggered via B2 only."
      },
      {
        "number": "10",
        "name": "2B",
        "type": "input",
        "description": "Channel 2 active-high trigger input B. Schmitt-trigger input; a low-to-high transition triggers a new output pulse when 2A is low and 2R is high. Tie low if unused."
      },
      {
        "number": "11",
        "name": "2R",
        "type": "input",
        "description": "Channel 2 active-low reset (R-bar). Driving low forces 2Q low and 2Q-bar high, terminating any output pulse in progress. Tie high for normal (non-reset) operation."
      },
      {
        "number": "12",
        "name": "2Q",
        "type": "output",
        "description": "Channel 2 inverted (Q-bar) buffered output. High in the idle state and pulses low for the programmed pulse width when the channel is triggered."
      },
      {
        "number": "13",
        "name": "1Q",
        "type": "output",
        "description": "Channel 1 non-inverted Q buffered output. Low in the idle state and pulses high for the programmed pulse width when the channel is triggered."
      },
      {
        "number": "14",
        "name": "1Cx",
        "type": "passive",
        "description": "Channel 1 external timing capacitor connection. Connect C_X between 1Cx (pin 14) and 1RxCx (pin 15). Minimum C_X is 0 pF."
      },
      {
        "number": "15",
        "name": "1RxCx",
        "type": "passive",
        "description": "Channel 1 external R_X/C_X node. R_X is connected from this pin to V_CC and C_X is connected from this pin to 1Cx (pin 14). Minimum R_X is typically 5 kΩ."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply. HC types operate 2 V-6 V (HCT types 4.5 V-5.5 V). Absolute maximum V_CC is 7 V; bypass locally with a 0.1 µF capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd74hc123m96.pdf",
        "pages": 22,
        "sha256": "f30f05d5554e0b7c",
        "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"
    },
    "logic": {
      "family_id": "74HC123",
      "logic_family": "74HC",
      "function_code": "123",
      "function_class": "Multivibrator",
      "function_name": "Dual Retriggerable Monostable Multivibrator",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "cd74hc123m96.step",
        "role": "plain",
        "up": "Z",
        "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",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc123m96-etched.step",
        "role": "eda",
        "up": "Z",
        "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",
        "sha256": "520da7e0e2b544036fbcb335ea611f9e84961e6a57bea7d714a32afb4bbb2702",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16",
      "Category": "Logic",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cd74hc123m96"
  ],
  "discovery_pitch": "CD74HC123M96 (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "README.md",
    "cd74hc123m96.kicad_sym",
    "cd74hc123m96.kicad_mod",
    "cd74hc123m96.glb",
    "cd74hc123m96.step",
    "cd74hc123m96-etched.step",
    "cd74hc123m96.lbr",
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    "docs/cd74hc123m96-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CD74HC123M96",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96M",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96MT",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96E",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96NSR",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96PW",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96PWR",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96PWT",
      "kind": "packaging"
    },
    {
      "mpn": "CD74HC123M96F3A",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T18:53:01.262Z"
}