component
74HCT245BQ
Public Made by Adomby adom
Nexperia Buffers, Drivers, Receivers, Transceivers, DHVQFN-20-EP(2.5x4.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"description": "Nexperia Buffers, Drivers, Receivers, Transceivers, DHVQFN-20-EP(2.5x4.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
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"logic",
"74hct245bq",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
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"path": "docs/hero.png"
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"74hct245bq.kicad_mod",
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"74hct245bq.lbr",
"docs/hero.png",
"docs/74hct245bq-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
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"74hct245bq-hero.overlay.json",
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],
"component": {
"mpn": "74HCT245BQ",
"manufacturer": "Nexperia",
"package": "DHVQFN-20-EP(2.5x4.5)",
"pin_count": 21,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914198047178752",
"parts": {
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"footprint": "74hct245bq.kicad_mod",
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"model_3d_step_plain": "74hct245bq.step",
"lbr": "74hct245bq.lbr"
},
"distributor_links": {
"lcsc": "C547496"
},
"distributor_check": {
"checked_at": "2026-10-20T11:13:16Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "DIR",
"type": "input",
"description": "Direction control input that sets the transfer direction between the A and B ports as defined in the function table (Table 3)."
},
{
"number": "2",
"name": "A0",
"type": "bidirectional",
"description": "Data input/output A0 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "3",
"name": "A1",
"type": "bidirectional",
"description": "Data input/output A1 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "4",
"name": "A2",
"type": "bidirectional",
"description": "Data input/output A2 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "5",
"name": "A3",
"type": "bidirectional",
"description": "Data input/output A3 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "6",
"name": "A4",
"type": "bidirectional",
"description": "Data input/output A4 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "7",
"name": "A5",
"type": "bidirectional",
"description": "Data input/output A5 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "8",
"name": "A6",
"type": "bidirectional",
"description": "Data input/output A6 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "9",
"name": "A7",
"type": "bidirectional",
"description": "Data input/output A7 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground (0 V) reference pin for the device."
},
{
"number": "11",
"name": "B7",
"type": "bidirectional",
"description": "Data input/output B7 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "12",
"name": "B6",
"type": "bidirectional",
"description": "Data input/output B6 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "13",
"name": "B5",
"type": "bidirectional",
"description": "Data input/output B5 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "14",
"name": "B4",
"type": "bidirectional",
"description": "Data input/output B4 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "15",
"name": "B3",
"type": "bidirectional",
"description": "Data input/output B3 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "16",
"name": "B2",
"type": "bidirectional",
"description": "Data input/output B2 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "17",
"name": "B1",
"type": "bidirectional",
"description": "Data input/output B1 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "18",
"name": "B0",
"type": "bidirectional",
"description": "Data input/output B0 is a non-inverting 3-state port that goes to high-impedance OFF-state when OE is HIGH."
},
{
"number": "19",
"name": "OE",
"type": "input",
"description": "Output enable input, active LOW; a HIGH level forces the A and B outputs into the high-impedance OFF-state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage: 2.0 V to 6.0 V recommended for 74HC245 and 4.5 V to 5.5 V for 74HCT245; absolute maximum rating is -0.5 V to +7 V."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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 DHVQFN20 package has an exposed thermal pad, shown in Fig. 4 with a footnote 'GND(1)': it is 'no; Table 3 wording for the DIR-controlled direction on the A/B ports is garbled in the extracted text (",
"exposed pad 21 added from the footprint"
],
"pages_sent": 15,
"cost_usd": 0.0756,
"at": "2026-10-20T11:12:52"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914198047178752",
"pages": 15,
"sha256": "ff2562c806a0fc87",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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},
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"units": "mm",
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"checked": "2026-10-20",
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},
{
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}
}