component

MCP2021AT-500E

Public Made by Adom

by adom

Microchip Tech LIN Transceivers, DFN-8-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcommunication interface chip-uart-485-232mcp2021at-500efactory-2.0.0extractor-text

Verified MCP2021AT-500E

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 9 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MCP2021AT-500E · DFN-8-EP(4x4) · 9 pins
  • ✓copper: 9 copper pads, none touching another net
  • ✓datasheet: all 9 pin names found in the 48-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: DFN-8-1EP_4x4mm_P0.8mm_EP2.5x3.6mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-uwkqrl67/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 9 pins = 9 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 9 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mcp2021at-500e.kicad_sym✓ mcp2021at-500e.kicad_mod✓ mcp2021at-500e.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1d ago
viewers mcp2021at-500e: viewers · Ray 1d ago
mcp2021at-500e-etched.glb Publish 0.1.0 · Ray 1d ago
mcp2021at-500e-etched.step mcp2021at-500e: factory component page (tier=mfr) · Ray 1d ago
mcp2021at-500e-hero.glb mcp2021at-500e: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
mcp2021at-500e-hero.overlay.json Publish 0.1.0 · Ray 1d ago
mcp2021at-500e.glb Publish 0.1.0 · Ray 1d ago
mcp2021at-500e.kicad_mod Publish 0.1.0 · Ray 1d ago
mcp2021at-500e.kicad_sym Publish 0.1.0 · Ray 1d ago
mcp2021at-500e.lbr Publish 0.1.0 · Ray 1d ago
mcp2021at-500e.step Publish 0.1.0 · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier mfr, 9 pins · Ray 1d ago

MCP2021AT-500E

Microchip Tech · LIN Transceivers · DFN-8-EP(4x4)

MCP2021AT-500E from Microchip Tech, in a DFN-8-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 RXD output Receive Data Output, a standard CMOS output that follows the state of the LBUS pin.
2 CS/LWAKE input Chip Select and Local Wake-up Input (TTL level, high-voltage tolerant) that controls device state transitions, with internal pull-down of ~600 kΩ when high and ~300 kΩ when low.
3 VREG power_out Voltage regulator output giving +5.0V or +3.3V at 70 mA regulated voltage.
4 TXD input Transmit Data Input (TTL level, HV-compliant up to 30V, adaptive pull-up to ~4.2V) that drives the LBUS pin low (dominant) when low.
5 VSS power_in Ground pin.
6 LBUS bidirectional LIN Bus pin, a bidirectional open-collector interface with current limitation and controlled slopes, controlled by TXD.
7 VBB power_in Battery positive supply voltage pin, with an external series diode to prevent reverse powering.
8 FAULT/TXE bidirectional Fault Detect Output (HV-tolerant open-drain up to 30V) / Transmitter Enable Input, with Transmitter Off mode entered when low; a 10 kΩ external pull-up is recommended.
9 EP passive Exposed thermal pad.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package DFN-8-EP(4x4)
Category Communication Interface Chip/UART/485/232
Pins 9

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin f) MCP2021A-500E/P: 5.0V, 8-lead PDIP package g) MCP2021A-330E/SN: 3.3V, 8-lead SOIC package 45

CAD (KiCad official)

  • Symbol: MCP2021AT-500E
  • Footprint: Package_DFN_QFN:DFN-8-1EP_4x4mm_P0.8mm_EP2.5x3.6mm
  • 3D model: DFN-8-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: mcp2021at-500e-etched.step / mcp2021at-500e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp2021at-500e.step / mcp2021at-500e.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (48 pp, sha256 3c5e8b3bb6f80ae5, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF