SN74ABT377ADBR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74abt377adbr",
  "title": "SN74ABT377ADBR",
  "brief": "Texas Instruments Flip Flops, SSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "logic",
    "sn74abt377adbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SN74ABT377ADBR",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74abt377adbr.pdf",
    "parts": {
      "symbol": "sn74abt377adbr.kicad_sym",
      "footprint": "sn74abt377adbr.kicad_mod",
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      "model_3d_step": "sn74abt377adbr-etched.step",
      "model_3d_step_plain": "sn74abt377adbr.step",
      "lbr": "sn74abt377adbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2866041",
      "digikey": "296-4008-2-ND",
      "mouser": "595-SN74ABT377ADBR"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T06:17:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-4008-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-SN74ABT377ADBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CLKEN",
        "type": "input",
        "description": "Common clock enable: when low, D data is transferred to Q on the positive-going CLK edge, and when high the flip-flops hold their state; CLKEN transitions are designed not to cause false clocking."
      },
      {
        "number": "2",
        "name": "1Q",
        "type": "output",
        "description": "Flip-flop 1 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "3",
        "name": "1D",
        "type": "input",
        "description": "Data input for flip-flop 1, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "4",
        "name": "2D",
        "type": "input",
        "description": "Data input for flip-flop 2, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "5",
        "name": "2Q",
        "type": "output",
        "description": "Flip-flop 2 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "6",
        "name": "3Q",
        "type": "output",
        "description": "Flip-flop 3 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "7",
        "name": "3D",
        "type": "input",
        "description": "Data input for flip-flop 3, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "8",
        "name": "4D",
        "type": "input",
        "description": "Data input for flip-flop 4, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "9",
        "name": "4Q",
        "type": "output",
        "description": "Flip-flop 4 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "11",
        "name": "CLK",
        "type": "input",
        "description": "Buffered clock input; the outputs change on the positive-going edge when CLKEN is low, and the CLK high or low level alone has no effect, with a minimum pulse duration of 3.3 ns."
      },
      {
        "number": "12",
        "name": "5Q",
        "type": "output",
        "description": "Flip-flop 5 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "13",
        "name": "5D",
        "type": "input",
        "description": "Data input for flip-flop 5, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "14",
        "name": "6D",
        "type": "input",
        "description": "Data input for flip-flop 6, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "15",
        "name": "6Q",
        "type": "output",
        "description": "Flip-flop 6 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "16",
        "name": "7Q",
        "type": "output",
        "description": "Flip-flop 7 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "17",
        "name": "7D",
        "type": "input",
        "description": "Data input for flip-flop 7, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "18",
        "name": "8D",
        "type": "input",
        "description": "Data input for flip-flop 8, which must meet the setup and hold times relative to the positive-going CLK edge."
      },
      {
        "number": "19",
        "name": "8Q",
        "type": "output",
        "description": "Flip-flop 8 output, rated for -32 mA IOH and 64 mA IOL (high-drive output)."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, with a recommended operating range of 4.5 V to 5.5 V."
      }
    ],
    "provenance": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The SSOP-20 pin map was rebuilt from the text-extracted TOP VIEW pin list (pins 1-10 left to right, ; The datasheet does not describe the Q outputs as three-state (the 377 has no output-enable pin), so ; The datasheet's Electrical Characteristics table covers the SN74ABT377A DB (SSOP) package only throu"
        ],
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        "at": "2026-10-18T06:12:40"
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        "pages": 25,
        "sha256": "09c03ca670bdb907",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 20,
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.02,
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SSOP-20",
      "Category": "Logic",
      "Pins": "20"
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    "characteristics": {
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          "name": "Input voltage range",
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          "name": "Storage temperature range",
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        {
          "name": "Package thermal impedance, DB package",
          "symbol": "θJA",
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          "name": "Input transition rise or fall rate",
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          "kind": "recommended_operating",
          "unit": "ns/V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Outputs enabled",
          "source_page": 3,
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        {
          "name": "Operating free-air temperature",
          "symbol": "TA",
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          "unit": "°C",
          "min": -40,
          "typ": null,
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          "conditions": "VCC = 4.5 V, II = -18 mA",
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          "name": "High-level output voltage",
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          "conditions": "VCC = 4.5 V, IOH = -32 mA",
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          "symbol": "Ioff",
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        {
          "name": "Output high leakage current",
          "symbol": "ICEX",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "VCC = 5.5 V, VO = 5.5 V, outputs high",
          "source_page": 4,
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        {
          "name": "Short-circuit output current",
          "symbol": "IO",
          "kind": "electrical",
          "unit": "mA",
          "min": -50,
          "typ": null,
          "max": -180,
          "conditions": "VCC = 5.5 V, VO = 2.5 V",
          "source_page": 4,
          "source": "datasheet"
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          "name": "Supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
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          "typ": null,
          "max": 250,
          "conditions": "VCC = 5.5 V, IO = 0, VI = VCC or GND, outputs high",
          "source_page": 4,
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          "name": "Supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "VCC = 5.5 V, IO = 0, VI = VCC or GND, outputs low",
          "source_page": 4,
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        {
          "name": "Increase in supply current per input",
          "symbol": "ΔICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "VCC = 5.5 V, one input at 3.4 V, other inputs at VCC or GND",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Clock frequency",
          "symbol": "fclock",
          "kind": "timing",
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          "conditions": "",
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          "name": "Pulse duration CLK high or low",
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          "min": 3.3,
          "typ": null,
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          "source_page": 5,
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          "min": 2.5,
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          "name": "Setup time before CLK↑, CLKEN high or low",
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          "source_page": 5,
          "source": "datasheet"
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          "name": "Hold time after CLK↑, data high or low",
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          "min": 1.8,
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          "name": "Hold time after CLK↑, CLKEN high or low",
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          "kind": "timing",
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          "min": 1.2,
          "typ": null,
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          "source": "datasheet"
        },
        {
          "name": "Maximum clock frequency",
          "symbol": "fmax",
          "kind": "timing",
          "unit": "MHz",
          "min": 150,
          "typ": null,
          "max": null,
          "conditions": "CL = 50 pF",
          "source_page": 5,
          "source": "datasheet"
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          "name": "Propagation delay CLK to Q (low-to-high)",
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          "kind": "timing",
          "unit": "ns",
          "min": 2.2,
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          "typ": 5.3,
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          "conditions": "CL = 50 pF",
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          "source": "datasheet"
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