component
SN75ALS172ADWR
Public Made by Adomby adom
Texas Instruments RS-485 / RS-422 ICs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"manufacturer": "Texas Instruments",
"package": "SOIC-20-300mil",
"pin_count": 20,
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"lcsc": "C2671485",
"digikey": "296-29779-2-ND",
"mouser": "595-SN75ALS172ADWR"
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"status": "found",
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"pins": [
{
"number": "1",
"name": "1A",
"type": "input",
"description": "Driver 1 input; the logic level on this pin sets the driver 1 outputs 1Y and 1Z when the drivers are enabled."
},
{
"number": "2",
"name": "1Y",
"type": "output",
"description": "Driver 1 non-inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "3",
"name": "NC",
"type": "unconnected",
"description": "No internal connection on the DW package."
},
{
"number": "4",
"name": "1Z",
"type": "output",
"description": "Driver 1 inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "5",
"name": "G",
"type": "input",
"description": "Active-high enable for all drivers; the outputs are high-impedance when G is low and the active-low enable G is inactive."
},
{
"number": "6",
"name": "2Z",
"type": "output",
"description": "Driver 2 inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "7",
"name": "NC",
"type": "unconnected",
"description": "No internal connection on the DW package."
},
{
"number": "8",
"name": "2Y",
"type": "output",
"description": "Driver 2 non-inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "9",
"name": "2A",
"type": "input",
"description": "Driver 2 input; the logic level on this pin sets the driver 2 outputs 2Y and 2Z when the drivers are enabled."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the device; all voltage limits are referenced to network ground."
},
{
"number": "11",
"name": "3A",
"type": "input",
"description": "Driver 3 input; the logic level on this pin sets the driver 3 outputs 3Y and 3Z when the drivers are enabled."
},
{
"number": "12",
"name": "3Y",
"type": "output",
"description": "Driver 3 non-inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "13",
"name": "NC",
"type": "unconnected",
"description": "No internal connection on the DW package."
},
{
"number": "14",
"name": "3Z",
"type": "output",
"description": "Driver 3 inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "15",
"name": "G",
"type": "input",
"description": "Active-low enable for all drivers (printed with an overbar in the datasheet); the outputs are enabled when this pin is low together with the active-high enable G."
},
{
"number": "16",
"name": "4Z",
"type": "output",
"description": "Driver 4 inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "17",
"name": "NC",
"type": "unconnected",
"description": "No internal connection on the DW package."
},
{
"number": "18",
"name": "4Y",
"type": "output",
"description": "Driver 4 non-inverted differential output, which is high-impedance when the drivers are disabled."
},
{
"number": "19",
"name": "4A",
"type": "input",
"description": "Driver 4 input; the logic level on this pin sets the driver 4 outputs 4Y and 4Z when the drivers are enabled."
},
{
"number": "20",
"name": "VCC",
"type": "power_in",
"description": "Power pin; recommended supply voltage is 4.75 V to 5.25 V (5 V nominal)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet prints both enables as 'G'; pin 15 is the active-low enable (overbar in the original),; NC pins are listed as no internal connection per the datasheet; the pinout is taken from the DW (SOI; The datasheet's enable descriptions are one-line functional summaries; the exact enable logic is giv"
],
"pages_sent": 19,
"cost_usd": 0.0728,
"at": "2026-10-08T16:00:58"
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"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn75als172a",
"pages": 19,
"sha256": "7aced5ec4e5ab4bd",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 20,
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"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-20-300mil",
"Category": "Interface",
"Pins": "20"
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"email": "[email protected]"
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