component
74AC244MTCX
Public Made by Adomby adom
onsemi Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "74ac244mtcx",
"title": "74AC244MTCX",
"brief": "onsemi Buffers, Drivers, Receivers, Transceivers, TSSOP-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": [
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"logic",
"74ac244mtcx",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "74AC244MTCX",
"manufacturer": "onsemi",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930477974048768",
"parts": {
"symbol": "74ac244mtcx.kicad_sym",
"footprint": "74ac244mtcx.kicad_mod",
"model_3d": "74ac244mtcx-hero.glb",
"model_3d_plain": "74ac244mtcx-etched.glb",
"model_3d_step": "74ac244mtcx-etched.step",
"model_3d_step_plain": "74ac244mtcx.step",
"lbr": "74ac244mtcx.lbr"
},
"distributor_links": {
"lcsc": "C903333",
"digikey": "74AC244MTCXTR-ND",
"mouser": "512-74AC244MTCX"
},
"distributor_check": {
"checked_at": "2026-10-21T00:11:08Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "74AC244MTCXTR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "512-74AC244MTCX",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "OE1",
"type": "input",
"description": "Active-low 3-STATE output enable input for the first buffer group, controlling outputs O0-O3 on pins 18, 16, 14, 12."
},
{
"number": "2",
"name": "I0",
"type": "input",
"description": "Data input I0, buffered to output O0 when OE1 is low."
},
{
"number": "3",
"name": "O4",
"type": "tri_state",
"description": "3-STATE output O4, enabled by OE2 and driven from I4, sources/sinks 24mA."
},
{
"number": "4",
"name": "I1",
"type": "input",
"description": "Data input I1, buffered to output O1 when OE1 is low."
},
{
"number": "5",
"name": "O5",
"type": "tri_state",
"description": "3-STATE output O5, enabled by OE2 and driven from I5, sources/sinks 24mA."
},
{
"number": "6",
"name": "I2",
"type": "input",
"description": "Data input I2, buffered to output O2 when OE1 is low."
},
{
"number": "7",
"name": "O6",
"type": "tri_state",
"description": "3-STATE output O6, enabled by OE2 and driven from I6, sources/sinks 24mA."
},
{
"number": "8",
"name": "I3",
"type": "input",
"description": "Data input I3, buffered to output O3 when OE1 is low."
},
{
"number": "9",
"name": "O7",
"type": "tri_state",
"description": "3-STATE output O7, enabled by OE2 and driven from I7, sources/sinks 24mA."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "11",
"name": "I7",
"type": "input",
"description": "Data input I7, buffered to output O7 when OE2 is low."
},
{
"number": "12",
"name": "O3",
"type": "tri_state",
"description": "3-STATE output O3, enabled by OE1 and driven from I3, sources/sinks 24mA."
},
{
"number": "13",
"name": "I6",
"type": "input",
"description": "Data input I6, buffered to output O6 when OE2 is low."
},
{
"number": "14",
"name": "O2",
"type": "tri_state",
"description": "3-STATE output O2, enabled by OE1 and driven from I2, sources/sinks 24mA."
},
{
"number": "15",
"name": "I5",
"type": "input",
"description": "Data input I5, buffered to output O5 when OE2 is low."
},
{
"number": "16",
"name": "O1",
"type": "tri_state",
"description": "3-STATE output O1, enabled by OE1 and driven from I1, sources/sinks 24mA."
},
{
"number": "17",
"name": "I4",
"type": "input",
"description": "Data input I4, buffered to output O4 when OE2 is low."
},
{
"number": "18",
"name": "O0",
"type": "tri_state",
"description": "3-STATE output O0, enabled by OE1 and driven from I0, sources/sinks 24mA."
},
{
"number": "19",
"name": "OE2",
"type": "input",
"description": "Active-low 3-STATE output enable input for the second buffer group, controlling outputs O4-O7 on pins 3, 5, 7, 9."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Positive supply voltage pin."
}
],
"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": "vision",
"consensus_model": "claude-opus-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pinout taken from the single connection diagram for the 20-lead package (shared by all package types",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 12,
"cost_usd": 0.2729,
"at": "2026-10-21T00:05:34"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930477974048768",
"pages": 14,
"sha256": "2e2a222a0cf8049a",
"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": "74ac244mtcx.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "74ac244mtcx-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
6.5,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "edafc38a64acd80fa3e4970be8545bfd8e16f76d00c3bbce1193ee627f740c25",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "onsemi",
"Package": "TSSOP-20",
"Category": "Logic",
"Pins": "20"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"74ac244mtcx"
],
"discovery_pitch": "74AC244MTCX (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
},
"files": [
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"README.md",
"74ac244mtcx.kicad_sym",
"74ac244mtcx.kicad_mod",
"74ac244mtcx.glb",
"74ac244mtcx.step",
"74ac244mtcx.lbr",
"docs/hero.png",
"docs/74ac244mtcx-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"74ac244mtcx-hero.glb",
"74ac244mtcx-hero.overlay.json",
"74ac244mtcx-etched.glb"
],
"visibility": {
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}
}