MM74HC573MTCX

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  "slug": "mm74hc573mtcx",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Latches, TSSOP-20. Pinout settled in review by an AI reviewer against the manufacturer's datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "logic ics",
    "mm74hc573mtcx",
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  "component": {
    "mpn": "MM74HC573MTCX",
    "manufacturer": "onsemi",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Latches",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/mm74hc573mtcx-d.pdf",
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    "distributor_links": {
      "lcsc": "C904260",
      "digikey": "MM74HC573MTCXTR-ND",
      "mouser": "512-MM74HC573MTCX"
    },
    "distributor_check": {
      "checked_at": "2026-11-06T00:39:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "MM74HC573MTCXTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "512-MM74HC573MTCX",
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    },
    "pins": [
      {
        "number": "1",
        "name": "OUTPUT CONTROL",
        "type": "input",
        "description": "Active-low 3-state output control; a HIGH level puts all outputs in high impedance regardless of other inputs and stored data."
      },
      {
        "number": "2",
        "name": "1D",
        "type": "input",
        "description": "Data input for latch 1, with input current of 1 µA maximum."
      },
      {
        "number": "3",
        "name": "2D",
        "type": "input",
        "description": "Data input for latch 2, with input current of 1 µA maximum."
      },
      {
        "number": "4",
        "name": "3D",
        "type": "input",
        "description": "Data input for latch 3, with input current of 1 µA maximum."
      },
      {
        "number": "5",
        "name": "4D",
        "type": "input",
        "description": "Data input for latch 4, with input current of 1 µA maximum."
      },
      {
        "number": "6",
        "name": "5D",
        "type": "input",
        "description": "Data input for latch 5, with input current of 1 µA maximum."
      },
      {
        "number": "7",
        "name": "6D",
        "type": "input",
        "description": "Data input for latch 6, with input current of 1 µA maximum."
      },
      {
        "number": "8",
        "name": "7D",
        "type": "input",
        "description": "Data input for latch 7, with input current of 1 µA maximum."
      },
      {
        "number": "9",
        "name": "8D",
        "type": "input",
        "description": "Data input for latch 8, with input current of 1 µA maximum."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, 0 V reference for all voltages."
      },
      {
        "number": "11",
        "name": "LATCH ENABLE",
        "type": "input",
        "description": "Latch enable input; Q outputs follow D inputs when HIGH and data is retained when LOW."
      },
      {
        "number": "12",
        "name": "8Q",
        "type": "tri_state",
        "description": "3-state output of latch 8, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "13",
        "name": "7Q",
        "type": "tri_state",
        "description": "3-state output of latch 7, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "14",
        "name": "6Q",
        "type": "tri_state",
        "description": "3-state output of latch 6, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "15",
        "name": "5Q",
        "type": "tri_state",
        "description": "3-state output of latch 5, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "16",
        "name": "4Q",
        "type": "tri_state",
        "description": "3-state output of latch 4, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "17",
        "name": "3Q",
        "type": "tri_state",
        "description": "3-state output of latch 3, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "18",
        "name": "2Q",
        "type": "tri_state",
        "description": "3-state output of latch 2, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "19",
        "name": "1Q",
        "type": "tri_state",
        "description": "3-state output of latch 1, drives 15 LS-TTL loads and goes high impedance when OUTPUT CONTROL is HIGH."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, recommended operating range 2 to 6 V (absolute maximum 7.0 V)."
      }
    ],
    "provenance": {
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      "datasheet": {
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        "pages": 10,
        "sha256": "bb27d336c8c4fb66",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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