component
CY74FCT244ATPC
Public Made by Adomby adom
Texas Instruments Buffers / Drivers, PDIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "cy74fct244atpc",
"version": "0.1.0",
"type": "component",
"description": "Texas Instruments Buffers / Drivers, PDIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"logic ics",
"cy74fct244atpc",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"cy74fct244atpc.kicad_sym",
"cy74fct244atpc.kicad_mod",
"cy74fct244atpc.glb",
"cy74fct244atpc.step",
"cy74fct244atpc.lbr",
"docs/hero.png",
"docs/cy74fct244atpc-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"cy74fct244atpc-hero.glb",
"cy74fct244atpc-hero.overlay.json",
"cy74fct244atpc-etched.glb"
],
"component": {
"mpn": "CY74FCT244ATPC",
"manufacturer": "Texas Instruments",
"package": "PDIP-20",
"pin_count": 20,
"category": "Logic ICs",
"subcategory": "Buffers / Drivers",
"datasheet": "https://www.ti.com/lit/ds/symlink/cy74fct244atpc.pdf",
"parts": {
"symbol": "cy74fct244atpc.kicad_sym",
"footprint": "cy74fct244atpc.kicad_mod",
"model_3d": "cy74fct244atpc-hero.glb",
"model_3d_plain": "cy74fct244atpc-etched.glb",
"model_3d_step": "cy74fct244atpc-etched.step",
"model_3d_step_plain": "cy74fct244atpc.step",
"lbr": "cy74fct244atpc.lbr"
},
"distributor_links": {
"lcsc": "C1499638",
"digikey": "2156-CY74FCT244ATPC-ND",
"mouser": "595-CY74FCT244ATPC"
},
"distributor_check": {
"checked_at": "2026-10-26T19:05:14Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "2156-CY74FCT244ATPC-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-CY74FCT244ATPC",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "OEA",
"type": "input",
"description": "Output enable for the A bank, active low; when OEA is high the OA0-OA3 outputs are in the high-impedance state."
},
{
"number": "2",
"name": "DA0",
"type": "input",
"description": "Data input A0 that drives output OA0 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "3",
"name": "OB0",
"type": "tri_state",
"description": "3-state output B0 that follows DB0, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "4",
"name": "DA1",
"type": "input",
"description": "Data input A1 that drives output OA1 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "5",
"name": "OB1",
"type": "tri_state",
"description": "3-state output B1 that follows DB1, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "6",
"name": "DA2",
"type": "input",
"description": "Data input A2 that drives output OA2 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "7",
"name": "OB2",
"type": "tri_state",
"description": "3-state output B2 that follows DB2, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "8",
"name": "DA3",
"type": "input",
"description": "Data input A3 that drives output OA3 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "9",
"name": "OB3",
"type": "tri_state",
"description": "3-state output B3 that follows DB3, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "11",
"name": "DB3",
"type": "input",
"description": "Data input B3 that drives output OB3 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "12",
"name": "OA3",
"type": "tri_state",
"description": "3-state output A3 that follows DA3, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "13",
"name": "DB2",
"type": "input",
"description": "Data input B2 that drives output OB2 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "14",
"name": "OA2",
"type": "tri_state",
"description": "3-state output A2 that follows DA2, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "15",
"name": "DB1",
"type": "input",
"description": "Data input B1 that drives output OB1 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "16",
"name": "OA1",
"type": "tri_state",
"description": "3-state output A1 that follows DA1, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "17",
"name": "DB0",
"type": "input",
"description": "Data input B0 that drives output OB0 (TTL-compatible; unused inputs must be held at VCC or GND)."
},
{
"number": "18",
"name": "OA0",
"type": "tri_state",
"description": "3-state output A0 that follows DA0, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
},
{
"number": "19",
"name": "OEB",
"type": "input",
"description": "Output enable for the B bank, active low; when OEB is high the OB0-OB3 outputs are in the high-impedance state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, 4.75 V to 5.25 V recommended for CY74FCT244T (absolute maximum -0.5 V to 7 V)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The pinout drawing on page 1 is labeled for the 'P, Q, or SO' package group. The ordering table list",
"1/20 pins cited to the wrong page (name found elsewhere): ['20:VCC@p4']"
],
"pages_sent": 22,
"cost_usd": 0.171,
"at": "2026-10-26T19:04:57"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/cy74fct244atpc.pdf",
"pages": 22,
"sha256": "b3e7a137db22363a",
"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": [
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"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": "2026-10-26",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "cy74fct244atpc-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "body on z = 0, through-hole leads below",
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"sha256": "1ea713d497a1a8bdc7ba72e75dd10852549e3dc8e6ef06904451ec49534e3b6b",
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}
]
}
}