component
MC74LCX244ADTR2G
Public Made by Adomby adom
onsemi Buffer/Driver/Transceiver, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266
{
"slug": "mc74lcx244adtr2g",
"version": "0.1.0",
"type": "component",
"description": "onsemi Buffer/Driver/Transceiver, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"logic ics",
"mc74lcx244adtr2g",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"mc74lcx244adtr2g.kicad_sym",
"mc74lcx244adtr2g.kicad_mod",
"mc74lcx244adtr2g.glb",
"mc74lcx244adtr2g.step",
"mc74lcx244adtr2g.lbr",
"docs/hero.png",
"docs/mc74lcx244adtr2g-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"mc74lcx244adtr2g-hero.glb",
"mc74lcx244adtr2g-hero.overlay.json",
"mc74lcx244adtr2g-etched.glb"
],
"component": {
"mpn": "MC74LCX244ADTR2G",
"manufacturer": "onsemi",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Logic ICs",
"subcategory": "Buffer/Driver/Transceiver",
"datasheet": "https://www.onsemi.com/pdf/datasheet/mc74lcx244adtr2-d.pdf",
"parts": {
"symbol": "mc74lcx244adtr2g.kicad_sym",
"footprint": "mc74lcx244adtr2g.kicad_mod",
"model_3d": "mc74lcx244adtr2g-hero.glb",
"model_3d_plain": "mc74lcx244adtr2g-etched.glb",
"model_3d_step": "mc74lcx244adtr2g-etched.step",
"model_3d_step_plain": "mc74lcx244adtr2g.step",
"lbr": "mc74lcx244adtr2g.lbr"
},
"distributor_links": {
"lcsc": "C3756378",
"digikey": "488-MC74LCX244ADTR2GTR-ND",
"mouser": "863-MC74LCX244ADTR2G"
},
"distributor_check": {
"checked_at": "2026-10-30T22:54:42Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "488-MC74LCX244ADTR2GTR-ND",
"status": "found"
},
"mouser": {
"pn": "863-MC74LCX244ADTR2G",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "1OE",
"type": "input",
"description": "Output Enable input for buffer bank 1; when HIGH it disables outputs 1O0 to 1O3 into a high-impedance state."
},
{
"number": "2",
"name": "1D0",
"type": "input",
"description": "Data input 1D0 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "3",
"name": "2O0",
"type": "tri_state",
"description": "3-state non-inverting output 2O0 with 24 mA balanced sink and source drive capability."
},
{
"number": "4",
"name": "1D1",
"type": "input",
"description": "Data input 1D1 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "5",
"name": "2O1",
"type": "tri_state",
"description": "3-state non-inverting output 2O1 with 24 mA balanced sink and source drive capability."
},
{
"number": "6",
"name": "1D2",
"type": "input",
"description": "Data input 1D2 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "7",
"name": "2O2",
"type": "tri_state",
"description": "3-state non-inverting output 2O2 with 24 mA balanced sink and source drive capability."
},
{
"number": "8",
"name": "1D3",
"type": "input",
"description": "Data input 1D3 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "9",
"name": "2O3",
"type": "tri_state",
"description": "3-state non-inverting output 2O3 with 24 mA balanced sink and source drive capability."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference pin for the device at 0 V."
},
{
"number": "11",
"name": "2D3",
"type": "input",
"description": "Data input 2D3 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "12",
"name": "1O3",
"type": "tri_state",
"description": "3-state non-inverting output 1O3 with 24 mA balanced sink and source drive capability."
},
{
"number": "13",
"name": "2D2",
"type": "input",
"description": "Data input 2D2 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "14",
"name": "1O2",
"type": "tri_state",
"description": "3-state non-inverting output 1O2 with 24 mA balanced sink and source drive capability."
},
{
"number": "15",
"name": "2D1",
"type": "input",
"description": "Data input 2D1 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "16",
"name": "1O1",
"type": "tri_state",
"description": "3-state non-inverting output 1O1 with 24 mA balanced sink and source drive capability."
},
{
"number": "17",
"name": "2D0",
"type": "input",
"description": "Data input 2D0 is TTL compatible, accepts up to 5.5 V, and must not be left floating."
},
{
"number": "18",
"name": "1O0",
"type": "tri_state",
"description": "3-state non-inverting output 1O0 with 24 mA balanced sink and source drive capability."
},
{
"number": "19",
"name": "2OE",
"type": "input",
"description": "Output Enable input for buffer bank 2; when HIGH it disables outputs 2O0 to 2O3 into a high-impedance state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage pin; the device operates from 1.65 V to 3.6 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-to-name mapping was taken from the logic diagram on page 3 because the Figure 1 pinout text is g"
],
"pages_sent": 9,
"cost_usd": 0.0211,
"at": "2026-10-30T22:54:31"
},
"datasheet": {
"url": "https://www.onsemi.com/pdf/datasheet/mc74lcx244adtr2-d.pdf",
"pages": 9,
"sha256": "2c1011161729bb7b",
"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": [
{
"file": "mc74lcx244adtr2g.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": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "mc74lcx244adtr2g-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": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "2cb02567e3157861efcdabd5a96932effe1fdd6f050d710492dcf97aeade6100",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}