component
SN74AHC244QPWRQ1
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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"description": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"component": {
"mpn": "SN74AHC244QPWRQ1",
"manufacturer": "Texas Instruments",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://www.ti.com/lit/ds/symlink/sn74ahc244-q1.pdf",
"parts": {
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"distributor_links": {
"lcsc": "C2863077",
"digikey": "296-SN74AHC244QPWRQ1TR-ND",
"mouser": "595-SN74AHC244QPWRQ1"
},
"distributor_check": {
"checked_at": "2026-11-05T23:09:54Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "296-SN74AHC244QPWRQ1TR-ND",
"status": "found"
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},
"pins": [
{
"number": "1",
"name": "1OE",
"type": "input",
"description": "Output enable 1 for the 1A to 1Y buffers; low passes data from the 1A inputs to the 1Y outputs and high puts the outputs in the high-impedance state."
},
{
"number": "2",
"name": "1A1",
"type": "input",
"description": "1A1 input, passed to output 1Y1 when 1OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "3",
"name": "2Y4",
"type": "output",
"description": "2Y4 3-state output, high-impedance when 2OE is high."
},
{
"number": "4",
"name": "1A2",
"type": "input",
"description": "1A2 input, passed to output 1Y2 when 1OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "5",
"name": "2Y3",
"type": "output",
"description": "2Y3 3-state output, high-impedance when 2OE is high."
},
{
"number": "6",
"name": "1A3",
"type": "input",
"description": "1A3 input, passed to output 1Y3 when 1OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "7",
"name": "2Y2",
"type": "output",
"description": "2Y2 3-state output, high-impedance when 2OE is high."
},
{
"number": "8",
"name": "1A4",
"type": "input",
"description": "1A4 input, passed to output 1Y4 when 1OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "9",
"name": "2Y1",
"type": "output",
"description": "2Y1 3-state output, high-impedance when 2OE is high."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "11",
"name": "2A1",
"type": "input",
"description": "2A1 input, passed to output 2Y1 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "12",
"name": "1Y4",
"type": "output",
"description": "1Y4 3-state output, high-impedance when 1OE is high."
},
{
"number": "13",
"name": "2A2",
"type": "input",
"description": "2A2 input, passed to output 2Y2 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "14",
"name": "1Y3",
"type": "output",
"description": "1Y3 3-state output, high-impedance when 1OE is high."
},
{
"number": "15",
"name": "2A3",
"type": "input",
"description": "2A3 input, passed to output 2Y3 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "16",
"name": "1Y2",
"type": "output",
"description": "1Y2 3-state output, high-impedance when 1OE is high."
},
{
"number": "17",
"name": "2A4",
"type": "input",
"description": "2A4 input, passed to output 2Y4 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "18",
"name": "1Y1",
"type": "output",
"description": "1Y1 3-state output, high-impedance when 1OE is high."
},
{
"number": "19",
"name": "2OE",
"type": "input",
"description": "Output enable 2 for the 2A to 2Y buffers; low passes data from the 2A inputs to the 2Y outputs and high puts the outputs in the high-impedance state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Power pin, operating range 2 V to 5.5 V."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
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"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 pin table on page 3 is printed for both the DW (SOIC-20) and PW (TSSOP-20) packages. The orderab"
],
"pages_sent": 27,
"cost_usd": 0.0248,
"at": "2026-11-05T23:09:46"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/sn74ahc244-q1.pdf",
"pages": 27,
"sha256": "a701b839dec452b0",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 20,
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