component
SN74HC574D
Public Made by Adomby adom
lingxingic Flip Flops, SOP-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "sn74hc574d",
"version": "0.1.0",
"type": "component",
"description": "lingxingic Flip Flops, SOP-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"logic",
"sn74hc574d",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"sn74hc574d.kicad_sym",
"sn74hc574d.kicad_mod",
"sn74hc574d.glb",
"sn74hc574d.step",
"sn74hc574d.lbr",
"docs/hero.png",
"docs/sn74hc574d-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"sn74hc574d-hero.glb",
"sn74hc574d-hero.overlay.json",
"sn74hc574d-etched.glb"
],
"component": {
"mpn": "SN74HC574D",
"manufacturer": "lingxingic",
"package": "SOP-20-300mil",
"pin_count": 20,
"category": "Logic",
"subcategory": "Flip Flops",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590923056514740224",
"parts": {
"symbol": "sn74hc574d.kicad_sym",
"footprint": "sn74hc574d.kicad_mod",
"model_3d": "sn74hc574d-hero.glb",
"model_3d_plain": "sn74hc574d-etched.glb",
"model_3d_step": "sn74hc574d-etched.step",
"model_3d_step_plain": "sn74hc574d.step",
"lbr": "sn74hc574d.lbr"
},
"distributor_links": {
"lcsc": "C22374074"
},
"distributor_check": {
"checked_at": "2026-10-17T16:12:14Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "OE",
"type": "input",
"description": "Active-low 3-state output enable; when OE is high the Qn outputs go high-impedance, and changes on OE do not affect the flip-flop state."
},
{
"number": "2",
"name": "D0",
"type": "input",
"description": "Data input to flip-flop FF1, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "3",
"name": "D1",
"type": "input",
"description": "Data input to flip-flop FF2, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "4",
"name": "D2",
"type": "input",
"description": "Data input to flip-flop FF3, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "5",
"name": "D3",
"type": "input",
"description": "Data input to flip-flop FF4, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "6",
"name": "D4",
"type": "input",
"description": "Data input to flip-flop FF5, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "7",
"name": "D5",
"type": "input",
"description": "Data input to flip-flop FF6, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "8",
"name": "D6",
"type": "input",
"description": "Data input to flip-flop FF7, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "9",
"name": "D7",
"type": "input",
"description": "Data input to flip-flop FF8, sampled on the rising edge of CP with the setup and hold times given in the timing tables."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference (0 V)."
},
{
"number": "11",
"name": "CP",
"type": "input",
"description": "Clock input; the flip-flops are triggered on the rising edge."
},
{
"number": "12",
"name": "Q7",
"type": "tri_state",
"description": "3-state flip-flop output Q7; high-impedance when OE is high."
},
{
"number": "13",
"name": "Q6",
"type": "tri_state",
"description": "3-state flip-flop output Q6; high-impedance when OE is high."
},
{
"number": "14",
"name": "Q5",
"type": "tri_state",
"description": "3-state flip-flop output Q5; high-impedance when OE is high."
},
{
"number": "15",
"name": "Q4",
"type": "tri_state",
"description": "3-state flip-flop output Q4; high-impedance when OE is high."
},
{
"number": "16",
"name": "Q3",
"type": "tri_state",
"description": "3-state flip-flop output Q3; high-impedance when OE is high."
},
{
"number": "17",
"name": "Q2",
"type": "tri_state",
"description": "3-state flip-flop output Q2; high-impedance when OE is high."
},
{
"number": "18",
"name": "Q1",
"type": "tri_state",
"description": "3-state flip-flop output Q1; high-impedance when OE is high."
},
{
"number": "19",
"name": "Q0",
"type": "tri_state",
"description": "3-state flip-flop output Q0; high-impedance when OE is high."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage; recommended 2.0-6.0 V for SN74HC574 and 4.5-5.5 V for SN74HCT574, with absolute maximum 7.0 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 ordering table is garbled. SN74HC574D is listed in the tube section, but the table rows for D ar; The datasheet does not state the package name 'SOP-20-300mil' verbatim. The SOP20 outline on page 17; The pin diagram on page 5 is garbled in the text extraction. Pin numbers and names were taken from t"
],
"pages_sent": 20,
"cost_usd": 0.0778,
"at": "2026-10-17T16:10:32"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590923056514740224",
"pages": 20,
"sha256": "4513b7374c86e098",
"source_tier": "lcsc"
},
"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": "sn74hc574d.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.26,
12.8,
2.65
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "1408941fb872068bde988034b2adf733b9c1480b687219ab24544a314ab7e47e",
"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "sn74hc574d-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
10.26,
12.8,
2.65
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "ffe6244df9381395a8a169875bfd5db10abae5fd25cb8377beb7dc98745df17c",
"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}