component
SN74AHC244MPWREP
Public Made by Adomby adom
Texas Instruments 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": "sn74ahc244mpwrep",
"title": "SN74AHC244MPWREP",
"brief": "Texas Instruments 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": [
"component",
"logic",
"sn74ahc244mpwrep",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "SN74AHC244MPWREP",
"manufacturer": "Texas Instruments",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://www.ti.com/cn/lit/gpn/sn74ahc244-ep",
"parts": {
"symbol": "sn74ahc244mpwrep.kicad_sym",
"footprint": "sn74ahc244mpwrep.kicad_mod",
"model_3d": "sn74ahc244mpwrep-hero.glb",
"model_3d_plain": "sn74ahc244mpwrep.glb",
"model_3d_step": "sn74ahc244mpwrep-etched.step",
"model_3d_step_plain": "sn74ahc244mpwrep.step",
"lbr": "sn74ahc244mpwrep.lbr"
},
"distributor_links": {
"lcsc": "C2675920",
"digikey": "296-22269-2-ND",
"mouser": "595-SN74AHC244MPWREP"
},
"distributor_check": {
"checked_at": "2026-10-08T23:04:35Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-22269-2-ND",
"status": "found",
"lifecycle": "Obsolete"
},
"mouser": {
"pn": "595-SN74AHC244MPWREP",
"status": "found",
"lifecycle": "Obsolete"
}
},
"pins": [
{
"number": "1",
"name": "1OE",
"type": "input",
"description": "Active-low output enable for the first 4-bit buffer section: when low, 1Y1 to 1Y4 follow 1A1 to 1A4, and when high they go to high impedance; tie OE to VCC through a pull-up resistor to hold the outputs high-Z during power up or down."
},
{
"number": "2",
"name": "1A1",
"type": "input",
"description": "Data input to buffer channel 1A1; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "3",
"name": "2Y4",
"type": "tri_state",
"description": "3-state output of buffer channel 2A4, enabled by 2OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "4",
"name": "1A2",
"type": "input",
"description": "Data input to buffer channel 1A2; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "5",
"name": "2Y3",
"type": "tri_state",
"description": "3-state output of buffer channel 2A3, enabled by 2OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "6",
"name": "1A3",
"type": "input",
"description": "Data input to buffer channel 1A3; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "7",
"name": "2Y2",
"type": "tri_state",
"description": "3-state output of buffer channel 2A2, enabled by 2OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "8",
"name": "1A4",
"type": "input",
"description": "Data input to buffer channel 1A4; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "9",
"name": "2Y1",
"type": "tri_state",
"description": "3-state output of buffer channel 2A1, enabled by 2OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "11",
"name": "2A1",
"type": "input",
"description": "Data input to buffer channel 2A1; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "12",
"name": "1Y4",
"type": "tri_state",
"description": "3-state output of buffer channel 1A4, enabled by 1OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "13",
"name": "2A2",
"type": "input",
"description": "Data input to buffer channel 2A2; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "14",
"name": "1Y3",
"type": "tri_state",
"description": "3-state output of buffer channel 1A3, enabled by 1OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "15",
"name": "2A3",
"type": "input",
"description": "Data input to buffer channel 2A3; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "16",
"name": "1Y2",
"type": "tri_state",
"description": "3-state output of buffer channel 1A2, enabled by 1OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "17",
"name": "2A4",
"type": "input",
"description": "Data input to buffer channel 2A4; inputs must stay within 0 V to 5.5 V, and unused inputs must be held at VCC or GND."
},
{
"number": "18",
"name": "1Y1",
"type": "tri_state",
"description": "3-state output of buffer channel 1A1, enabled by 1OE; output voltage range is 0 V to VCC and continuous output current is limited to ±25 mA."
},
{
"number": "19",
"name": "2OE",
"type": "input",
"description": "Active-low output enable for the second 4-bit buffer section: when low, 2Y1 to 2Y4 follow 2A1 to 2A4, and when high they go to high impedance; tie OE to VCC through a pull-up resistor to hold the outputs high-Z during power up or down."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, operating range 2 V to 5.5 V (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-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 pinout is printed once for both the SOIC (DW) and TSSOP (PW) packages ('DW OR PW PACKAGE (TOP VI; The pin-number-to-name mapping was reconstructed from the two-column text layout of the top-view fig; Pin types are inferred from function: the A and OE pins are input, the Y pins are tri_state (3-state"
],
"pages_sent": 11,
"cost_usd": 0.0778,
"at": "2026-10-08T23:03:38"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn74ahc244-ep",
"pages": 11,
"sha256": "b8095d08df0e0e80",
"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": "sn74ahc244mpwrep.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": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "sn74ahc244mpwrep-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": "2e362baa94974b91b11f16463e2342e35fbba76ffacc03790730f56a81c5b90e",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "TSSOP-20",
"Category": "Logic",
"Pins": "20"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"sn74ahc244mpwrep"
],
"discovery_pitch": "SN74AHC244MPWREP (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"sn74ahc244mpwrep.kicad_sym",
"sn74ahc244mpwrep.kicad_mod",
"sn74ahc244mpwrep.glb",
"sn74ahc244mpwrep.step",
"sn74ahc244mpwrep.lbr",
"docs/hero.png",
"docs/sn74ahc244mpwrep-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"sn74ahc244mpwrep-hero.glb",
"sn74ahc244mpwrep-hero.overlay.json"
],
"visibility": {
"public": true
}
}