component
SN74ABT240ADWR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "SN74ABT240ADWR",
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"manufacturer": "Texas Instruments",
"package": "SOIC-20",
"pin_count": 20,
"category": "Logic",
"subcategory": "Buffers, Drivers, Receivers, Transceivers",
"datasheet": "https://www.ti.com/cn/lit/gpn/sn74abt240a",
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"distributor_links": {
"lcsc": "C2872538",
"digikey": "296-SN74ABT240ADWRTR-ND",
"mouser": "595-SN74ABT240ADWR"
},
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"pn": "296-SN74ABT240ADWRTR-ND",
"status": "found",
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"pn": "595-SN74ABT240ADWR",
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},
"pins": [
{
"number": "1",
"name": "1OE",
"type": "input",
"description": "Active-low output enable for buffers 1Y1 to 1Y4; when high, outputs 1Y1 to 1Y4 are forced to the high-impedance state."
},
{
"number": "2",
"name": "1A1",
"type": "input",
"description": "Data input to buffer 1; when 1OE is low, the inverted data appears on 1Y1, and unused inputs must be held at VCC or GND."
},
{
"number": "3",
"name": "2Y4",
"type": "tri_state",
"description": "3-state output of buffer 2 (channel 4), inverted from 2A4 when 2OE is low and high-impedance when 2OE is high."
},
{
"number": "4",
"name": "1A2",
"type": "input",
"description": "Data input to buffer 1 (channel 2), inverted to 1Y2 when 1OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "5",
"name": "2Y3",
"type": "tri_state",
"description": "3-state output of buffer 2 (channel 3), inverted from 2A3 when 2OE is low and high-impedance when 2OE is high."
},
{
"number": "6",
"name": "1A3",
"type": "input",
"description": "Data input to buffer 1 (channel 3), inverted to 1Y3 when 1OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "7",
"name": "2Y2",
"type": "tri_state",
"description": "3-state output of buffer 2 (channel 2), inverted from 2A2 when 2OE is low and high-impedance when 2OE is high."
},
{
"number": "8",
"name": "1A4",
"type": "input",
"description": "Data input to buffer 1 (channel 4), inverted to 1Y4 when 1OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "9",
"name": "2Y1",
"type": "tri_state",
"description": "3-state output of buffer 2 (channel 1), inverted from 2A1 when 2OE is low and high-impedance when 2OE is high."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Device ground reference."
},
{
"number": "11",
"name": "2A1",
"type": "input",
"description": "Data input to buffer 2 (channel 1), inverted to 2Y1 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "12",
"name": "1Y4",
"type": "tri_state",
"description": "3-state output of buffer 1 (channel 4), inverted from 1A4 when 1OE is low and high-impedance when 1OE is high."
},
{
"number": "13",
"name": "2A2",
"type": "input",
"description": "Data input to buffer 2 (channel 2), inverted to 2Y2 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "14",
"name": "1Y3",
"type": "tri_state",
"description": "3-state output of buffer 1 (channel 3), inverted from 1A3 when 1OE is low and high-impedance when 1OE is high."
},
{
"number": "15",
"name": "2A3",
"type": "input",
"description": "Data input to buffer 2 (channel 3), inverted to 2Y3 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "16",
"name": "1Y2",
"type": "tri_state",
"description": "3-state output of buffer 1 (channel 2), inverted from 1A2 when 1OE is low and high-impedance when 1OE is high."
},
{
"number": "17",
"name": "2A4",
"type": "input",
"description": "Data input to buffer 2 (channel 4), inverted to 2Y4 when 2OE is low; unused inputs must be held at VCC or GND."
},
{
"number": "18",
"name": "1Y1",
"type": "tri_state",
"description": "3-state output of buffer 1 (channel 1), inverted from 1A1 when 1OE is low and high-impedance when 1OE is high."
},
{
"number": "19",
"name": "2OE",
"type": "input",
"description": "Active-low output enable for buffers 2Y1 to 2Y4; when high, outputs 2Y1 to 2Y4 are forced to the high-impedance state."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, 4.5 V to 5.5 V recommended; OE should be tied to VCC through a pullup resistor to hold outputs high-impedance during power up or down."
}
],
"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 SN74ABT240A top-view pin map is shared by the DB, DW, N, NS and PW packages. The DW (SOIC-20) ma; Pin descriptions for 2OE, 2A1 and similar pins are paraphrased from the function table and notes; th"
],
"pages_sent": 26,
"cost_usd": 0.0887,
"at": "2026-10-11T12:55:58"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn74abt240a",
"pages": 26,
"sha256": "809f246e9ce5e1ce",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"footprint": "viewers/footprint.html"
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"seat": "z = 0",
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
"checked": "2026-10-11",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-20",
"Category": "Logic",
"Pins": "20"
}
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"author": {
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"email": "[email protected]"
},
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