SN74HC193DR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74hc193dr",
  "title": "SN74HC193DR",
  "brief": "Texas Instruments Counters / Dividers, SOIC-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "logic",
    "sn74hc193dr"
  ],
  "component": {
    "mpn": "SN74HC193DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Counters / Dividers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74hc193.pdf",
    "parts": {
      "symbol": "sn74hc193dr.kicad_sym",
      "footprint": "sn74hc193dr.kicad_mod",
      "model_3d": "sn74hc193dr-etched.glb",
      "model_3d_plain": "sn74hc193dr.glb",
      "model_3d_step": "sn74hc193dr-etched.step",
      "model_3d_step_plain": "sn74hc193dr.step",
      "lbr": "sn74hc193dr.lbr"
    },
    "distributor_links": {
      "digikey": "296-41634-2-ND",
      "mouser": "595-SN74HC193DR",
      "lcsc": "C80043"
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Parallel data input B (bit 1). Preset value loaded into flip-flop QB when LOAD is low. High-level input threshold 3.15 V at VCC=4.5 V; input current 1 uA max."
      },
      {
        "number": "2",
        "name": "QB",
        "type": "output",
        "description": "Counter data output bit 1 (QB). CMOS push-pull output; +/-4 mA drive at 5 V; can drive up to 10 LSTTL loads."
      },
      {
        "number": "3",
        "name": "QA",
        "type": "output",
        "description": "Counter data output bit 0 (QA, LSB). CMOS push-pull output; +/-4 mA drive at 5 V."
      },
      {
        "number": "4",
        "name": "DOWN",
        "type": "input",
        "description": "Count-down clock input. Counter decrements on a low-to-high transition of DOWN while UP is held high. Rise/fall time <= 500 ns at VCC=4.5 V."
      },
      {
        "number": "5",
        "name": "UP",
        "type": "input",
        "description": "Count-up clock input. Counter increments on a low-to-high transition of UP while DOWN is held high."
      },
      {
        "number": "6",
        "name": "QC",
        "type": "output",
        "description": "Counter data output bit 2 (QC). CMOS push-pull output; +/-4 mA drive at 5 V."
      },
      {
        "number": "7",
        "name": "QD",
        "type": "output",
        "description": "Counter data output bit 3 (QD, MSB). CMOS push-pull output; +/-4 mA drive at 5 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V). Continuous current through VCC or GND +/-50 mA max."
      },
      {
        "number": "9",
        "name": "D",
        "type": "input",
        "description": "Parallel data input D (bit 3, MSB). Preset value loaded into flip-flop QD when LOAD is low."
      },
      {
        "number": "10",
        "name": "C",
        "type": "input",
        "description": "Parallel data input C (bit 2). Preset value loaded into flip-flop QC when LOAD is low."
      },
      {
        "number": "11",
        "name": "LOAD",
        "type": "input",
        "description": "Asynchronous parallel-load enable, active-low. Driving LOAD low forces the counter outputs to match the A/B/C/D data inputs, independent of the count clocks."
      },
      {
        "number": "12",
        "name": "CO",
        "type": "output",
        "description": "Carry output, active-low. Produces a low-level pulse when the count reaches maximum (15) and UP is low. Feed to the UP input of the next stage to cascade counters."
      },
      {
        "number": "13",
        "name": "BO",
        "type": "output",
        "description": "Borrow output, active-low. Produces a low-level pulse when the count is zero (all outputs low) and DOWN is low. Feed to the DOWN input of the next stage to cascade counters."
      },
      {
        "number": "14",
        "name": "CLR",
        "type": "input",
        "description": "Asynchronous clear, active-high. When high, forces all Q outputs to logic low regardless of LOAD, data, or count inputs."
      },
      {
        "number": "15",
        "name": "A",
        "type": "input",
        "description": "Parallel data input A (bit 0, LSB). Preset value loaded into flip-flop QA when LOAD is low."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage. Operating range 2 V to 6 V (5 V nominal); absolute max 7 V. Quiescent current 80 uA max."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74hc193.pdf",
        "pages": 23,
        "sha256": "6ce6f3e3f359c50c",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -4.445
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",
      "mark": "drawn"
    },
    "logic": {
      "family_id": "74HC193",
      "logic_family": "74HC",
      "function_code": "193",
      "function_class": null,
      "function_name": null,
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
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        "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": "sn74hc193dr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "adf5d62d002d0ea8879177839d8b06bdc152e2de65b64a87eed3006e0a38e475",
        "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": [
    "sn74hc193dr"
  ],
  "discovery_pitch": "SN74HC193DR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "README.md",
    "sn74hc193dr.kicad_sym",
    "sn74hc193dr.kicad_mod",
    "sn74hc193dr.glb",
    "sn74hc193dr.step",
    "sn74hc193dr.lbr",
    "docs/hero.png",
    "docs/sn74hc193dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74hc193dr-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SN74HC193DRD",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRDT",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRN",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRNSR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRPW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRPWR",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRPWT",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRJ",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRW",
      "kind": "packaging"
    },
    {
      "mpn": "SN74HC193DRFK",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T07:02:41.967Z"
}