component
LE87271EQCT
Public Made by Adomby adom
Microchip Tech Telecommunication Interface ICs, QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"component": {
"mpn": "LE87271EQCT",
"manufacturer": "Microchip Tech",
"package": "QFN-20-EP(4x4)",
"pin_count": 21,
"category": "Communication Interface Chip/UART/485/232",
"subcategory": "Telecommunication Interface ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/973cc0929177ed0abc4daa1fa649f43a.pdf",
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"distributor_links": {
"lcsc": "C3679570",
"digikey": "150-LE87271EQTR-ND",
"mouser": "494-LE87271EQCT"
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"distributor_check": {
"checked_at": "2026-10-30T16:39:03Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "150-LE87271EQTR-ND",
"status": "found",
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"pins": [
{
"number": "1",
"name": "NC",
"type": "unconnected",
"description": "No connect, no internal connection."
},
{
"number": "2",
"name": "NC",
"type": "unconnected",
"description": "No connect, no internal connection."
},
{
"number": "3",
"name": "C0",
"type": "input",
"description": "Tri-state logic-level state control input with an internal resistor pulling to the middle level when undriven (VIH 2.0 V min, VIL 0.8 V max, VIM 1.4 to 1.6 V on C0)."
},
{
"number": "4",
"name": "C1",
"type": "input",
"description": "Logic-level state control input with an internal pull-down resistor (VIH 2.0 V min, VIL 0.8 V max)."
},
{
"number": "5",
"name": "C2",
"type": "input",
"description": "Logic-level state control input with an internal pull-down resistor (VIH 2.0 V min, VIL 0.8 V max)."
},
{
"number": "6",
"name": "NC",
"type": "unconnected",
"description": "No connect, no internal connection."
},
{
"number": "7",
"name": "IREF",
"type": "passive",
"description": "Bias current reference pin, connected through RREF (75 kΩ typical) to ground."
},
{
"number": "8",
"name": "VDD",
"type": "power_in",
"description": "Power supply pin, 12.6 V to 15.4 V (14 V typical), tied together with VDD_P and VDD_N."
},
{
"number": "9",
"name": "VDD_N",
"type": "power_in",
"description": "Power supply pin for the N output side, 12.6 V to 15.4 V (14 V typical), tied together with VDD and VDD_P."
},
{
"number": "10",
"name": "NC",
"type": "unconnected",
"description": "No connect, no internal connection."
},
{
"number": "11",
"name": "OUT_N",
"type": "output",
"description": "Line driver differential output (negative), high impedance in power-down and thermal shut-down."
},
{
"number": "12",
"name": "NC",
"type": "unconnected",
"description": "No connect, no internal connection."
},
{
"number": "13",
"name": "VSS",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "No connect, no internal connection."
},
{
"number": "15",
"name": "OUT_P",
"type": "output",
"description": "Line driver differential output (positive), high impedance in power-down and thermal shut-down."
},
{
"number": "16",
"name": "NC",
"type": "unconnected",
"description": "No connect, no internal connection."
},
{
"number": "17",
"name": "VDD_P",
"type": "power_in",
"description": "Power supply pin for the P output side, 12.6 V to 15.4 V (14 V typical), tied together with VDD and VDD_N."
},
{
"number": "18",
"name": "VDD",
"type": "power_in",
"description": "Power supply pin, 12.6 V to 15.4 V (14 V typical), tied together with VDD_P and VDD_N."
},
{
"number": "19",
"name": "IN_P",
"type": "input",
"description": "Line driver differential input (positive), 15 kΩ typical differential input impedance."
},
{
"number": "20",
"name": "IN_N",
"type": "input",
"description": "Line driver differential input (negative), 15 kΩ typical differential input impedance."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Exposed pad has no pin number in the datasheet text; labeled 'EP' by convention. It is internally co; Pin Type column is blank for IREF, VDD, VDD_N, VDD_P and NC pins; types were inferred from the descr; Pin diagram (Figure 2) is an image and not in the text; the pin table was used. Package drawing dime"
],
"pages_sent": 17,
"cost_usd": 0.1097,
"at": "2026-10-30T16:38:54"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/973cc0929177ed0abc4daa1fa649f43a.pdf",
"pages": 17,
"sha256": "aa10e9981fec82b6",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
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