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{
  "schema_version": 1,
  "type": "component",
  "slug": "sn74act374n",
  "title": "SN74ACT374N",
  "brief": "Texas Instruments Flip Flops, PDIP-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": [
    "component",
    "logic ics",
    "sn74act374n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SN74ACT374N",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-20",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Flip Flops",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74act374n.pdf",
    "parts": {
      "symbol": "sn74act374n.kicad_sym",
      "footprint": "sn74act374n.kicad_mod",
      "model_3d": "sn74act374n-hero.glb",
      "model_3d_plain": "sn74act374n-etched.glb",
      "model_3d_step": "sn74act374n-etched.step",
      "model_3d_step_plain": "sn74act374n.step",
      "lbr": "sn74act374n.lbr"
    },
    "distributor_links": {
      "lcsc": "C180194",
      "digikey": "2156-SN74ACT374N-ND",
      "mouser": "595-SN74ACT374N"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T19:17:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-SN74ACT374N-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74ACT374N",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Buffered active-low output enable; when high, the eight Q outputs are forced to the high-impedance state, and OE should be tied to VCC through a pullup resistor to keep outputs high-Z during power up or power down."
      },
      {
        "number": "2",
        "name": "1Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 1, which takes the logic level of 1D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "3",
        "name": "1D",
        "type": "input",
        "description": "Data input to flip-flop 1, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "4",
        "name": "2D",
        "type": "input",
        "description": "Data input to flip-flop 2, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "5",
        "name": "2Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 2, which takes the logic level of 2D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "6",
        "name": "3Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 3, which takes the logic level of 3D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "7",
        "name": "3D",
        "type": "input",
        "description": "Data input to flip-flop 3, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "8",
        "name": "4D",
        "type": "input",
        "description": "Data input to flip-flop 4, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "9",
        "name": "4Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 4, which takes the logic level of 4D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device; all unused inputs must be held at VCC or GND for proper operation."
      },
      {
        "number": "11",
        "name": "CLK",
        "type": "input",
        "description": "Clock input; the Q outputs are set to the logic levels present on the D inputs on the positive clock transition, with a minimum pulse width of 5 ns."
      },
      {
        "number": "12",
        "name": "5Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 5, which takes the logic level of 5D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "13",
        "name": "5D",
        "type": "input",
        "description": "Data input to flip-flop 5, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "14",
        "name": "6D",
        "type": "input",
        "description": "Data input to flip-flop 6, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "15",
        "name": "6Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 6, which takes the logic level of 6D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "16",
        "name": "7Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 7, which takes the logic level of 7D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "17",
        "name": "7D",
        "type": "input",
        "description": "Data input to flip-flop 7, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "18",
        "name": "8D",
        "type": "input",
        "description": "Data input to flip-flop 8, sampled on the positive transition of CLK, with inputs accepting voltages up to 5.5 V and TTL-voltage compatible."
      },
      {
        "number": "19",
        "name": "8Q",
        "type": "tri_state",
        "description": "Three-state output of flip-flop 8, which takes the logic level of 8D on the positive CLK transition and drives IOH of -24 mA and IOL of 24 mA."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended operation from 4.5 V to 5.5 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives one TOP VIEW pin diagram shared by the DB, DW, N, NS and PW packages. The N (PDI; Pin 1 is OE. The datasheet lists OE as active-low (low-level enabling in the test circuit), so the o"
        ],
        "pages_sent": 22,
        "cost_usd": 0.0828,
        "at": "2026-10-30T19:17:13"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74act374n.pdf",
        "pages": 22,
        "sha256": "078de0d471ea43a8",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sn74act374n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          26.162,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74act374n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          26.162,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1d8fb749acafdae6362121bda27d967e314d584a4b548efb55f8509c77ed3520",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "PDIP-20",
      "Category": "Logic ICs",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "078de0d471ea43a89e718db3be419d80105387af71e6fb836c65247a1fe9c30a",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VI",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level output current",
          "symbol": "IOH",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -24,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low-level output current",
          "symbol": "IOL",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input transition rise or fall rate",
          "symbol": "Δt/Δv",
          "kind": "recommended_operating",
          "unit": "ns/V",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating free-air temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage range",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input voltage range",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output voltage range",
          "symbol": "VO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input clamp current",
          "symbol": "IIK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VI < 0 or VI > VCC",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output clamp current",
          "symbol": "IOK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VO < 0 or VO > VCC",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Continuous output current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "VO = 0 to VCC",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Continuous current through VCC or GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Package thermal impedance, N package",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 69,
          "max": null,
          "conditions": "N package, per JESD 51-7",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": 4.49,
          "max": null,
          "conditions": "IOH = −50 μA, VCC = 4.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5.4,
          "typ": 5.49,
          "max": null,
          "conditions": "IOH = −50 μA, VCC = 5.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.76,
          "typ": null,
          "max": null,
          "conditions": "IOH = −24 mA, VCC = 4.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.76,
          "typ": null,
          "max": null,
          "conditions": "IOH = −24 mA, VCC = 5.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "IOL = 50 μA, VCC = 4.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.44,
          "conditions": "IOL = 24 mA, VCC = 4.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Off-state (high-impedance) output current",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "μA",
          "min": -2.5,
          "typ": null,
          "max": 2.5,
          "conditions": "VO = VCC or GND, VCC = 5.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VI = VCC or GND, VCC = 5.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 4,
          "max": 40,
          "conditions": "VI = VCC or GND, IO = 0, VCC = 5.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply current increase per TTL-level input",
          "symbol": "ΔICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.6,
          "max": 1.5,
          "conditions": "One input at 3.4 V, other inputs at GND or VCC, VCC = 5.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clock frequency",
          "symbol": "fclock",
          "kind": "timing",
          "unit": "MHz",
          "min": 90,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5 V ± 0.5 V (see Figure 1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Pulse duration, CLK high or low",
          "symbol": "tw",
          "kind": "timing",
          "unit": "ns",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5 V ± 0.5 V (see Figure 1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Setup time, data before CLK↑",
          "symbol": "tsu",
          "kind": "timing",
          "unit": "ns",
          "min": 5.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5 V ± 0.5 V (see Figure 1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Hold time, data after CLK↑",
          "symbol": "th",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5 V ± 0.5 V (see Figure 1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum clock frequency",
          "symbol": "fmax",
          "kind": "timing",
          "unit": "MHz",
          "min": 90,
          "typ": 160,
          "max": null,
          "conditions": "VCC = 5 V ± 0.5 V (see Figure 1); typ at TA = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay CLK to Q, low-to-high",
          "symbol": "tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": 2,
          "typ": 8.5,
          "max": 11.5,
          "conditions": "VCC = 5 V ± 0.5 V (see Figure 1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay CLK to Q, high-to-low",
          "symbol": "tPHL",
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