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MCP2551-I

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by Ray

Microchip Tech CAN Transceivers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

markdown

MCP2551-I

Microchip Tech · CAN Transceivers · SOIC-8

MCP2551-I from Microchip Tech, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 TXD input Transmitter Data Input. TTL-compatible input driving the CANH/CANL differential outputs. Has an internal pull-up to VDD (nominal 25 kΩ). Low = Dominant bus state, High = Recessive.
2 VSS power_in Ground supply pin.
3 VDD power_in Positive supply voltage pin (4.5V to 5.5V nominal operating range).
4 RXD output Receiver Data Output. CMOS-compatible output that reflects the differential bus state. Low = Dominant, High = Recessive. Connects to the RX input of the CAN controller.
5 VREF output Reference Voltage Output, defined as VDD/2. Provides a nominal mid-supply reference for CAN controllers that require it.
6 CANL bidirectional CAN Low-Level Voltage I/O. Drives the low side of the CAN differential bus and is internally tied to the receive input comparator.
7 CANH bidirectional CAN High-Level Voltage I/O. Drives the high side of the CAN differential bus and is internally tied to the receive input comparator.
8 RS input Slope-Control / Mode Select Input. Selects High-Speed (RS to VSS), Slope-Control (external resistor REXT to VSS, 10 kΩ-200 kΩ sets slew rate ~4-24 V/µs), or Standby (RS high, > 0.75 VDD) modes.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-8
Category Interface
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • MCP2551-II/P
  • MCP2551-IE/P
  • MCP2551-II/SN
  • MCP2551-IE/SN

CAD (KiCad official)

  • Symbol: MCP2551-I
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Microchip Tech datasheet (24 pp, sha256 992a90244d3fd3f0, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF