component
KSZ8873MML
Public Made by Adomby adom
Microchip Tech Ethernet ICs, LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "ksz8873mml",
"title": "KSZ8873MML",
"brief": "Microchip Tech Ethernet ICs, LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"communication interface chip-uart-485-232",
"ksz8873mml",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "KSZ8873MML",
"manufacturer": "Microchip Tech",
"package": "LQFP-64(10x10)",
"pin_count": 64,
"category": "Communication Interface Chip/UART/485/232",
"subcategory": "Ethernet ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d57f2e7e007056824e1ee208c01684de.pdf",
"parts": {
"symbol": "ksz8873mml.kicad_sym",
"footprint": "ksz8873mml.kicad_mod",
"model_3d": "ksz8873mml-hero.glb",
"model_3d_plain": "ksz8873mml-etched.glb",
"model_3d_step": "ksz8873mml-etched.step",
"model_3d_step_plain": "ksz8873mml.step",
"lbr": "ksz8873mml.lbr"
},
"distributor_links": {
"lcsc": "C634217",
"digikey": "576-3460-ND",
"mouser": "998-KSZ8873MML"
},
"distributor_check": {
"checked_at": "2026-10-30T20:54:25Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "576-3460-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "998-KSZ8873MML",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "RXM1",
"type": "bidirectional",
"description": "Port 1 physical receive or transmit signal (- differential)."
},
{
"number": "2",
"name": "RXP1",
"type": "bidirectional",
"description": "Port 1 physical receive or transmit signal (+ differential)."
},
{
"number": "3",
"name": "AGND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "4",
"name": "TXM1",
"type": "bidirectional",
"description": "Port 1 physical transmit or receive signal (- differential)."
},
{
"number": "5",
"name": "TXP1",
"type": "bidirectional",
"description": "Port 1 physical transmit or receive signal (+ differential)."
},
{
"number": "6",
"name": "VDDA_3.3",
"type": "power_in",
"description": "3.3V analog VDD."
},
{
"number": "7",
"name": "AGND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "8",
"name": "ISET",
"type": "output",
"description": "Sets physical transmit output current; pull down to ground with an 11.8kΩ 1% resistor."
},
{
"number": "9",
"name": "VDDA_1.8",
"type": "power_in",
"description": "1.8V analog core power input from VDDCO (pin 56)."
},
{
"number": "10",
"name": "RXM2",
"type": "bidirectional",
"description": "Port 2 physical receive or transmit signal (- differential)."
},
{
"number": "11",
"name": "RXP2",
"type": "bidirectional",
"description": "Port 2 physical receive or transmit signal (+ differential)."
},
{
"number": "12",
"name": "AGND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "13",
"name": "TXM2",
"type": "bidirectional",
"description": "Port 2 physical transmit or receive signal (- differential)."
},
{
"number": "14",
"name": "TXP2",
"type": "bidirectional",
"description": "Port 2 physical transmit or receive signal (+ differential)."
},
{
"number": "15",
"name": "FXSD2",
"type": "input",
"description": "For MLL/RLL, connect to analog ground by pull-down resistor (fiber signal detect/factory test pin on FLL)."
},
{
"number": "16",
"name": "PWRDN",
"type": "input",
"description": "Chip power down input, active-low, with internal pull-up."
},
{
"number": "17",
"name": "X1",
"type": "input",
"description": "25 MHz or 50 MHz crystal/oscillator connection (±50 ppm); with an oscillator, X1 takes a 3.3V tolerant oscillator and clock must be applied before reset goes high."
},
{
"number": "18",
"name": "X2",
"type": "output",
"description": "Crystal connection for the 25 MHz or 50 MHz clock; NC when an oscillator is used on X1."
},
{
"number": "19",
"name": "SMTXEN3",
"type": "input",
"description": "Switch MII transmit enable, with internal pull-up."
},
{
"number": "20",
"name": "SMTXD33/EN_REFCLKO_3",
"type": "input",
"description": "MLL/FLL: switch MII transmit data bit 3 (internal pull-up); on RLL a strap option enabling REFCLKO_3 output."
},
{
"number": "21",
"name": "SMTXD32",
"type": "input",
"description": "MLL/FLL: switch MII transmit data bit 2, with internal pull-up (no connection on RLL)."
},
{
"number": "22",
"name": "SMTXD31",
"type": "input",
"description": "Switch MII/RMII transmit data bit 1, with internal pull-up."
},
{
"number": "23",
"name": "SMTXD30",
"type": "input",
"description": "Switch MII/RMII transmit data bit 0, with internal pull-up."
},
{
"number": "24",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "25",
"name": "VDDIO",
"type": "power_in",
"description": "3.3V, 2.5V, or 1.8V digital VDD input supply for IO, with well decoupling capacitors."
},
{
"number": "26",
"name": "SMTXC3/REFCLKI_3",
"type": "bidirectional",
"description": "MLL/FLL: switch MII transmit clock, output in PHY MII and SNI mode, input in MAC MII mode (RLL: RMII reference clock input)."
},
{
"number": "27",
"name": "SMTXER3/MII_LINK_3",
"type": "input",
"description": "Switch MII transmit error; in MII PHY mode 0 = link from host, 1 = no link on port 3 and enables bypass mode (internal pull-down)."
},
{
"number": "28",
"name": "SMRXDV3",
"type": "bidirectional",
"description": "Switch MII receive data valid; strap option for MII mode: PU = PHY mode, PD = MAC mode."
},
{
"number": "29",
"name": "SMRXD33/REFCLKO_3",
"type": "bidirectional",
"description": "MLL/FLL: switch MII receive data bit 3; strap option enabling auto-negotiation on port 2 (PU = enable, PD = disable)."
},
{
"number": "30",
"name": "SMRXD32",
"type": "bidirectional",
"description": "Switch MII receive data bit 2; strap to force port 2 speed when P2ANEN = 0 (PU = 100BT, PD = 10BT)."
},
{
"number": "31",
"name": "SMRXD31",
"type": "bidirectional",
"description": "Switch MII/RMII receive data bit 1; strap to force port 2 duplex (PU = full, PD = half)."
},
{
"number": "32",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "33",
"name": "SMRXD30",
"type": "bidirectional",
"description": "Switch MII/RMII receive data bit 0; strap for port 2 flow control (PU = always enabled, PD = determined by auto-negotiation)."
},
{
"number": "34",
"name": "SCRS3/NC",
"type": "bidirectional",
"description": "MLL/FLL: switch MII carrier sense (RLL: no connection, internal pull-up); in MAC mode drive from PHY CRS, or pull down with 1kΩ if only full-duplex."
},
{
"number": "35",
"name": "SCOL3/NC",
"type": "bidirectional",
"description": "MLL/FLL: switch MII collision detect (RLL: no connection, internal pull-up)."
},
{
"number": "36",
"name": "SMRXC3/NC",
"type": "bidirectional",
"description": "MLL/FLL: switch MII receive clock, output in PHY MII mode and input in MAC MII mode (RLL: no connection)."
},
{
"number": "37",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "38",
"name": "VDDC",
"type": "power_in",
"description": "1.8V digital core power input from VDDCO (pin 56)."
},
{
"number": "39",
"name": "SPIQ",
"type": "bidirectional",
"description": "SPI slave mode serial data output (external pull-up needed when in use); strap for XCLK frequency: PU = 25 MHz, PD = 50 MHz."
},
{
"number": "40",
"name": "SPISN",
"type": "input",
"description": "SPI slave mode chip select, active-low; high deselects the device and tri-states SPIQ; external pull-up needed when in use."
},
{
"number": "41",
"name": "INTRN",
"type": "output",
"description": "Active-low interrupt to host CPU indicating an interrupt status bit is set on lost link (registers 187 and 188)."
},
{
"number": "42",
"name": "SCL_MDC",
"type": "bidirectional",
"description": "Clock input in SPI/I2C slave mode and MIIM, clock output in I2C master mode."
},
{
"number": "43",
"name": "SDA_MDIO",
"type": "bidirectional",
"description": "SPI slave serial data input, I2C serial data input/output, or MIIM data input/output; external pull-up needed when in use."
},
{
"number": "44",
"name": "NC",
"type": "unconnected",
"description": "Unused pin; only this NC pin may be pulled down by a resistor for better EMI."
},
{
"number": "45",
"name": "P1ANEN",
"type": "bidirectional",
"description": "Strap to enable (PU) or disable (PD) auto-negotiation on port 1."
},
{
"number": "46",
"name": "P1SPD",
"type": "bidirectional",
"description": "Strap to force port 1 to 100BT (PU) or 10BT (PD) if P1ANEN = 0."
},
{
"number": "47",
"name": "P1DPX",
"type": "bidirectional",
"description": "Strap selecting port 1 full-duplex (PU) or half-duplex (PD) default or forced mode."
},
{
"number": "48",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "49",
"name": "VDDC",
"type": "power_in",
"description": "1.8V digital core power input from VDDCO (pin 56)."
},
{
"number": "50",
"name": "P1FFC",
"type": "bidirectional",
"description": "Strap: PU = always force port 1 flow control, PD = determined by auto-negotiation result."
},
{
"number": "51",
"name": "P3SPD",
"type": "bidirectional",
"description": "Strap: PU = force port 3 to 10BT, PD = force port 3 to 100BT (default)."
},
{
"number": "52",
"name": "NC",
"type": "unconnected",
"description": "Unused pin, no external connection."
},
{
"number": "53",
"name": "NC",
"type": "unconnected",
"description": "Unused pin, no external connection."
},
{
"number": "54",
"name": "VDDIO",
"type": "power_in",
"description": "3.3V, 2.5V or 1.8V digital VDD input supply for IO, with well decoupling capacitors."
},
{
"number": "55",
"name": "GND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "56",
"name": "VDDCO",
"type": "power_out",
"description": "1.8V core output from internal LDO (input from VDDIO) powering VDDA_1.8 and VDDC; do not connect an external supply, and use a ferrite bead between analog and digital 1.8V."
},
{
"number": "57",
"name": "NC",
"type": "unconnected",
"description": "Unused pin, no external connection."
},
{
"number": "58",
"name": "P1LED1",
"type": "bidirectional",
"description": "Port 1 LED indicator (default speed); strap for port 3 flow control: PU = force enabled (default), PD = disable."
},
{
"number": "59",
"name": "P1LED0",
"type": "bidirectional",
"description": "Port 1 LED indicator (default link/activity); strap for port 3 duplex: PU = half, PD = full (default); external 0.5 kΩ pull-down recommended."
},
{
"number": "60",
"name": "P2LED1",
"type": "bidirectional",
"description": "Port 2 LED indicator (default speed); with P2LED0 straps serial bus mode: [P2LED1,P2LED0] 00 = I2C master, 01 = I2C slave, 10 = SPI slave, 11 = SMI/MIIM."
},
{
"number": "61",
"name": "P2LED0",
"type": "bidirectional",
"description": "Port 2 LED indicator (default link/activity); with P2LED1 straps the serial bus configuration mode."
},
{
"number": "62",
"name": "RSTN",
"type": "input",
"description": "Hardware reset, active-low, with internal pull-up."
},
{
"number": "63",
"name": "FXSD1",
"type": "input",
"description": "For MLL/RLL, connect to analog ground by pull-down resistor (fiber signal detect on FLL)."
},
{
"number": "64",
"name": "VDDA_1.8",
"type": "power_in",
"description": "1.8V analog VDD input from VDDCO (pin 56) through external ferrite bead and capacitors."
}
],
"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",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Datasheet covers KSZ8873MLL/FLL/RLL; the requested MPN 'KSZ8873MML' is not named in the text. The ML; Pin types derived from the datasheet's I/O codes (Ipu/O, Ipd/O treated as bidirectional; ISET given "
],
"pages_sent": 26,
"cost_usd": 0.3406,
"at": "2026-10-30T20:54:12"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/d57f2e7e007056824e1ee208c01684de.pdf",
"pages": 95,
"sha256": "5bfa1107d97e8afb",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 64,
"described": 64,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "ksz8873mml.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12,
12,
1.5
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "b0c827bc5c05552175d28affe44a5bd2ab45c9c36efff6ff07a74cc449b13db4",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "ksz8873mml-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12,
12,
1.5
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "00700aa93efa9ae6b16e703c7c79190b829686870d9b7a25e57d3908b5f21123",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "LQFP-64(10x10)",
"Category": "Communication Interface Chip/UART/485/232",
"Pins": "64"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "5bfa1107d97e8afb014f109ed6402a14385fa144e3fd757b4f175fbe5533b533",
"rows": [
{
"name": "Supply Voltage VDDA_1.8, VDDC (abs max)",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.5,
"typ": null,
"max": 2.4,
"conditions": "VDDA_1.8, VDDC",
"source_page": 74,
"source": "datasheet"
},
{
"name": "Supply Voltage VDDA_3.3, VDDIO (abs max)",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.5,
"typ": null,
"max": 4,
"conditions": "VDDA_3.3, VDDIO",
"source_page": 74,
"source": "datasheet"
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{
"name": "Input Voltage",
"symbol": "",
"kind": "absolute_maximum",
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"min": -0.5,
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"conditions": "",
"source_page": 74,
"source": "datasheet"
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{
"name": "Output Voltage",
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"source_page": 74,
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{
"name": "Lead Temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "soldering, 10s",
"source_page": 74,
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},
{
"name": "Storage Temperature",
"symbol": "TS",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
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{
"name": "HBM ESD Rating",
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"source": "datasheet"
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{
"name": "Supply Voltage VDDA_1.8, VDDC (operating)",
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"conditions": "VDDA_1.8, VDDC",
"source_page": 74,
"source": "datasheet"
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{
"name": "Supply Voltage VDDA_3.3 (operating)",
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"conditions": "VDDA_3.3",
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{
"name": "Ambient Temperature (Industrial)",
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"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "Industrial",
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"source": "datasheet"
},
{
"name": "Ambient Temperature (Commercial)",
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"min": 0,
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"conditions": "Commercial",
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{
"name": "Junction Temperature",
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