component
SN74LS273N
Public Made by Adomby adom
lingxingic Flip Flops, DIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "sn74ls273n",
"version": "0.1.0",
"type": "component",
"description": "lingxingic Flip Flops, DIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"logic",
"sn74ls273n",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"sn74ls273n.kicad_sym",
"sn74ls273n.kicad_mod",
"sn74ls273n.glb",
"sn74ls273n.step",
"sn74ls273n.lbr",
"docs/hero.png",
"docs/sn74ls273n-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"sn74ls273n-hero.glb",
"sn74ls273n-hero.overlay.json",
"sn74ls273n-etched.glb"
],
"component": {
"mpn": "SN74LS273N",
"manufacturer": "lingxingic",
"package": "DIP-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Flip Flops",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590921177575600128",
"parts": {
"symbol": "sn74ls273n.kicad_sym",
"footprint": "sn74ls273n.kicad_mod",
"model_3d": "sn74ls273n-hero.glb",
"model_3d_plain": "sn74ls273n-etched.glb",
"model_3d_step": "sn74ls273n-etched.step",
"model_3d_step_plain": "sn74ls273n.step",
"lbr": "sn74ls273n.lbr"
},
"distributor_links": {
"lcsc": "C22374102",
"digikey": "296-1657-5-ND",
"mouser": "595-SN74LS273N"
},
"distributor_check": {
"checked_at": "2026-10-15T01:58:14Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-1657-5-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-SN74LS273N",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "MR",
"type": "input",
"description": "Active-low master reset input; when driven low, all Qn outputs go low regardless of the clock and data inputs."
},
{
"number": "2",
"name": "Q0",
"type": "output",
"description": "Flip-flop 0 output, which takes the state of D0 on the rising edge of CP and goes low when MR is low."
},
{
"number": "3",
"name": "D0",
"type": "input",
"description": "Data input to flip-flop 0, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "4",
"name": "D1",
"type": "input",
"description": "Data input to flip-flop 1, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "5",
"name": "Q1",
"type": "output",
"description": "Flip-flop 1 output, which takes the state of D1 on the rising edge of CP and goes low when MR is low."
},
{
"number": "6",
"name": "Q2",
"type": "output",
"description": "Flip-flop 2 output, which takes the state of D2 on the rising edge of CP and goes low when MR is low."
},
{
"number": "7",
"name": "D2",
"type": "input",
"description": "Data input to flip-flop 2, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "8",
"name": "D3",
"type": "input",
"description": "Data input to flip-flop 3, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "9",
"name": "Q3",
"type": "output",
"description": "Flip-flop 3 output, which takes the state of D3 on the rising edge of CP and goes low when MR is low."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference, 0 V."
},
{
"number": "11",
"name": "CP",
"type": "input",
"description": "Clock input; all eight flip-flops are triggered on its rising edge."
},
{
"number": "12",
"name": "Q4",
"type": "output",
"description": "Flip-flop 4 output, which takes the state of D4 on the rising edge of CP and goes low when MR is low."
},
{
"number": "13",
"name": "D4",
"type": "input",
"description": "Data input to flip-flop 4, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "14",
"name": "D5",
"type": "input",
"description": "Data input to flip-flop 5, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "15",
"name": "Q5",
"type": "output",
"description": "Flip-flop 5 output, which takes the state of D5 on the rising edge of CP and goes low when MR is low."
},
{
"number": "16",
"name": "Q6",
"type": "output",
"description": "Flip-flop 6 output, which takes the state of D6 on the rising edge of CP and goes low when MR is low."
},
{
"number": "17",
"name": "D6",
"type": "input",
"description": "Data input to flip-flop 6, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "18",
"name": "D7",
"type": "input",
"description": "Data input to flip-flop 7, sampled on the rising edge of CP and meeting the setup and hold times stated in the datasheet."
},
{
"number": "19",
"name": "Q7",
"type": "output",
"description": "Flip-flop 7 output, which takes the state of D7 on the rising edge of CP and goes low when MR is low."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage; recommended range 2.0 V to 6.0 V (typical 5.0 V), 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: Pin 1 is named MR with an overbar in the source; the datasheet's pin table prints it as MR and descr; The pin-arrangement diagram text (section 2.2) is scrambled in extraction; the pin assignments above; Output pin types are recorded as output because the datasheet does not describe any tri-state behavi"
],
"pages_sent": 21,
"cost_usd": 0.0646,
"at": "2026-10-15T01:57:56"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590921177575600128",
"pages": 21,
"sha256": "95ed8741b355ce22",
"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": "sn74ls273n.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": 0.0,
"footprint_binding": "identity",
"sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
"checked": "2026-10-15",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "sn74ls273n-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": 0.0,
"footprint_binding": "identity",
"sha256": "9ef6799fe8a1ca30a9ef1da3c639a1f29a1a1f4445ed21f2cbc3bab3a5f30817",
"checked": "2026-10-15",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}