component
MCP4451-104E
Public Made by Adomby adom
Microchip Tech Digital Potentiometers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "mcp4451-104e",
"version": "0.1.0",
"type": "component",
"description": "Microchip Tech Digital Potentiometers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"adc-dac-data conversion",
"mcp4451-104e",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
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"README.md",
"mcp4451-104e.kicad_sym",
"mcp4451-104e.kicad_mod",
"mcp4451-104e.glb",
"mcp4451-104e.step",
"mcp4451-104e.lbr",
"docs/hero.png",
"docs/mcp4451-104e-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"mcp4451-104e-hero.glb",
"mcp4451-104e-hero.overlay.json",
"mcp4451-104e-etched.glb"
],
"component": {
"mpn": "MCP4451-104E",
"manufacturer": "Microchip Tech",
"package": "TSSOP-20",
"pin_count": 20,
"category": "ADC/DAC/Data Conversion",
"subcategory": "Digital Potentiometers",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/db849d610d714455bbfc81058c4fb819.pdf",
"parts": {
"symbol": "mcp4451-104e.kicad_sym",
"footprint": "mcp4451-104e.kicad_mod",
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"model_3d_plain": "mcp4451-104e-etched.glb",
"model_3d_step": "mcp4451-104e-etched.step",
"model_3d_step_plain": "mcp4451-104e.step",
"lbr": "mcp4451-104e.lbr"
},
"distributor_links": {
"lcsc": "C638704"
},
"distributor_check": {
"checked_at": "2026-10-26T18:59:05Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "P3A",
"type": "passive",
"description": "Potentiometer 3 terminal A, the fixed full-scale connection, which must be held between VSS and VDD."
},
{
"number": "2",
"name": "P3W",
"type": "passive",
"description": "Potentiometer 3 wiper terminal, which must be held between VSS and VDD."
},
{
"number": "3",
"name": "P3B",
"type": "passive",
"description": "Potentiometer 3 terminal B, the fixed zero-scale connection, which must be held between VSS and VDD."
},
{
"number": "4",
"name": "HVC/A0",
"type": "input",
"description": "High-voltage-tolerant Schmitt-trigger input with a smart pull-up that serves as I2C address bit 0 (latched at POR/BOR) and as the High Voltage Command pin when driven to VIHH."
},
{
"number": "5",
"name": "SCL",
"type": "input",
"description": "High-voltage-tolerant Schmitt-trigger I2C clock input from the host, supporting clock rates up to 100 kHz, 400 kHz and 3.4 MHz."
},
{
"number": "6",
"name": "SDA",
"type": "bidirectional",
"description": "High-voltage-tolerant I2C serial data pin with an open-drain N-channel output driver."
},
{
"number": "7",
"name": "VSS",
"type": "power_in",
"description": "Ground reference for the device."
},
{
"number": "8",
"name": "P1B",
"type": "passive",
"description": "Potentiometer 1 terminal B, the fixed zero-scale connection, which must be held between VSS and VDD."
},
{
"number": "9",
"name": "P1W",
"type": "passive",
"description": "Potentiometer 1 wiper terminal, which must be held between VSS and VDD."
},
{
"number": "10",
"name": "P1A",
"type": "passive",
"description": "Potentiometer 1 terminal A, the fixed full-scale connection, which must be held between VSS and VDD."
},
{
"number": "11",
"name": "P0A",
"type": "passive",
"description": "Potentiometer 0 terminal A, the fixed full-scale connection, which must be held between VSS and VDD."
},
{
"number": "12",
"name": "P0W",
"type": "passive",
"description": "Potentiometer 0 wiper terminal, which must be held between VSS and VDD."
},
{
"number": "13",
"name": "P0B",
"type": "passive",
"description": "Potentiometer 0 terminal B, the fixed zero-scale connection, which must be held between VSS and VDD."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "No-connect pin that is not used internally."
},
{
"number": "15",
"name": "RESET",
"type": "input",
"description": "High-voltage-tolerant Schmitt-trigger hardware reset input with weak pull-up that forces the device into the POR/BOR state."
},
{
"number": "16",
"name": "A1",
"type": "input",
"description": "High-voltage-tolerant Schmitt-trigger I2C address bit 1 input with smart pull-up, which should be tied static high or low."
},
{
"number": "17",
"name": "VDD",
"type": "power_in",
"description": "Positive power supply input relative to VSS, with 1.8V to 5.5V device operation and 2.7V to 5.5V for specified characteristics."
},
{
"number": "18",
"name": "P2B",
"type": "passive",
"description": "Potentiometer 2 terminal B, the fixed zero-scale connection, which must be held between VSS and VDD."
},
{
"number": "19",
"name": "P2W",
"type": "passive",
"description": "Potentiometer 2 wiper terminal, which must be held between VSS and VDD."
},
{
"number": "20",
"name": "P2A",
"type": "passive",
"description": "Potentiometer 2 terminal A, the fixed full-scale connection, which must be held between VSS and VDD."
}
],
"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: The MPN 'MCP4451-104E' has no package suffix; TSSOP-20 was taken from the package hint. The MCP4451 ; Datasheet is inconsistent for NC: Table 3-1 and section 3.8 say it is not used, while section 3.12 s; The Table 3-1 pin-number columns are run together in the extracted text. The TSSOP-20 numbers were m"
],
"pages_sent": 20,
"cost_usd": 0.1812,
"at": "2026-10-26T18:58:50"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/db849d610d714455bbfc81058c4fb819.pdf",
"pages": 94,
"sha256": "3e69021e45ebc441",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
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"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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6.5,
1.2
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
"checked": "2026-10-26",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "mcp4451-104e-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
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"sha256": "c4d97995899af0ccc6142a3163deeebc6517299abeafe0be3221da3b4c660f8c",
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}
}