component
SN74AHCT244MPWREP
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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"title": "SN74AHCT244MPWREP",
"brief": "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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"mpn": "SN74AHCT244MPWREP",
"manufacturer": "Texas Instruments",
"package": "TSSOP-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://www.ti.com/cn/lit/gpn/sn74ahct244-ep",
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"distributor_links": {
"lcsc": "C2676493",
"digikey": "296-22286-2-ND",
"mouser": "595-N74AHCT244MPWREP"
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"source": "Component Ocean /api/assign-pns",
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"pn": "296-22286-2-ND",
"status": "found",
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"status": "found",
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},
"pins": [
{
"number": "1",
"name": "1OE",
"type": "input",
"description": "Active-low output enable for the first 4-bit buffer; when low the 1Y outputs follow the 1A inputs, and when high the 1Y outputs go to the high-impedance state."
},
{
"number": "2",
"name": "1A1",
"type": "input",
"description": "Data input to the first buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "3",
"name": "2Y4",
"type": "tri_state",
"description": "3-state buffer output of the second bank, high impedance when 2OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "4",
"name": "1A2",
"type": "input",
"description": "Data input to the first buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "5",
"name": "2Y3",
"type": "tri_state",
"description": "3-state buffer output of the second bank, high impedance when 2OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "6",
"name": "1A3",
"type": "input",
"description": "Data input to the first buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "7",
"name": "2Y2",
"type": "tri_state",
"description": "3-state buffer output of the second bank, high impedance when 2OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "8",
"name": "1A4",
"type": "input",
"description": "Data input to the first buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "9",
"name": "2Y1",
"type": "tri_state",
"description": "3-state buffer output of the second bank, high impedance when 2OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Device ground connection."
},
{
"number": "11",
"name": "2A1",
"type": "input",
"description": "Data input to the second buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "12",
"name": "1Y4",
"type": "tri_state",
"description": "3-state buffer output of the first bank, high impedance when 1OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "13",
"name": "2A2",
"type": "input",
"description": "Data input to the second buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "14",
"name": "1Y3",
"type": "tri_state",
"description": "3-state buffer output of the first bank, high impedance when 1OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "15",
"name": "2A3",
"type": "input",
"description": "Data input to the second buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "16",
"name": "1Y2",
"type": "tri_state",
"description": "3-state buffer output of the first bank, high impedance when 1OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "17",
"name": "2A4",
"type": "input",
"description": "Data input to the second buffer channel, with an input voltage range of 0 V to 5.5 V, TTL-voltage compatible with VIH minimum 2 V and VIL maximum 0.8 V."
},
{
"number": "18",
"name": "1Y1",
"type": "tri_state",
"description": "3-state buffer output of the first bank, high impedance when 1OE is high, with output voltage limited to 0 V to VCC and recommended IOH of -8 mA and IOL of 8 mA."
},
{
"number": "19",
"name": "2OE",
"type": "input",
"description": "Active-low output enable for the second 4-bit buffer; when low the 2Y outputs follow the 2A inputs, and when high the 2Y outputs go to the high-impedance state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, recommended range 4.5 V to 5.5 V; tie OE to VCC through a pullup resistor to keep outputs high-impedance during power up or down."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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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 datasheet gives one pin diagram shared by the DW (SOIC) and PW (TSSOP) packages. The ordering ta; Input and output pin descriptions quote the recommended operating conditions and the note on unused "
],
"pages_sent": 10,
"cost_usd": 0.062,
"at": "2026-10-11T17:02:13"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn74ahct244-ep",
"pages": 10,
"sha256": "ef24c4b9d7fff0f9",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "TSSOP-20",
"Category": "Logic",
"Pins": "20"
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"email": "[email protected]"
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