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MCP2557FD-H

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Microchip Tech CAN ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Contents

README

markdown

MCP2557FD-H

Microchip Tech · CAN ICs · SOIC-8

MCP2557FD-H from Microchip Tech, in a SOIC-8. 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 TXD input Transmit data input from the CAN controller; Low drives CANH/CANL Dominant, High is Recessive, with an internal nominal 33 kΩ pull-up to VDD.
2 VSS power_in Ground supply pin.
3 VDD power_in Positive supply voltage pin that supplies the transmitter and receiver (and the digital I/O in the MCP2557FD).
4 RXD output CMOS-compatible receive data output, High when the bus is Recessive and Low when Dominant, driven to VDD and requiring a 5V tolerant MCU input.
5 NC unconnected No Connect; this pin can be left open or connected to VSS.
6 CANL bidirectional CAN Low-level voltage I/O that drives the low side of the differential bus and disconnects from the bus when the device is unpowered.
7 CANH bidirectional CAN High-level voltage I/O that drives the high side of the differential bus and disconnects from the bus when the device is unpowered.
8 S input Silent mode input selecting Normal or Silent mode (transmitter off, receiver active), with an internal MOS pull-up to VDD of typically 660 kΩ at 5V.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage Range VDD 4.5 5.5 V 11
Supply Current Recessive IDD 2.5 5 mA Recessive; VTXD = VDD 11
Supply Current Dominant IDD 55 70 mA Dominant; VTXD = 0V 11
Silent Current IDDS 1 3 mA MCP2557FD 11
Maximum Supply Current IDDMAX 95 140 mA Fault condition: VTXD = VSS; VCANH = VCANL = -5V to +18V 11
High Level of POR Comparator for VDD VPORH 3 3.95 V Note 1 11
Low Level of POR Comparator for VDD VPORL 1 2 3.2 V Note 1 11
Hysteresis of POR Comparator for VDD VPORD 0.2 0.9 2 V Note 1 11
High Level of UV Comparator for VDD VUVH 4 4.25 4.4 V 11
Low Level of UV Comparator for VDD VUVL 3.6 3.8 4 V 11
Hysteresis of UV Comparator VUVD 0.4 V Note 1 11
Recessive Bus Output Voltage CANH, CANL VO(R) 2 3 V VTXD = VDD; No load 11
Recessive Output Current IO(R) -5 5 mA -24V < VCAN < +24V 11
CANH Dominant Output Voltage VO(D) 2.75 3.5 4.5 V TXD = 0; RL = 50 to 65 11
CANL Dominant Output Voltage VO(D) 0.5 1.5 2.25 V RL = 50 to 65 11
Driver Symmetry (VCANH+VCANL)/VDD VSYM 0.9 1 1.1 V 1 MHz square wave, Recessive and Dominant states, and transition (Note 1) 11
Dominant Differential Output Voltage VO(DIFF)(D) 1.5 2 3 V VTXD = VSS; RL = 50 to 65 (Note 1) 12
Dominant Differential Output Voltage VO(DIFF)(D) 1.4 2 3 V VTXD = VSS; RL = 45 to 70 (Note 1) 12
Dominant Differential Output Voltage VO(DIFF)(D) 1.3 2 3 V VTXD = VSS; RL = 40 to 75 12
Dominant Differential Output Voltage VO(DIFF)(D) 1.5 5 V VTXD = VSS; RL = 2240 (Note 1) 12
Recessive Differential Output Voltage VO(DIFF)(R) -500 0 50 mV VTXD = VDD, no load 12
CANH Short-Circuit Output Current IO(SC) -115 -85 mA VTXD = VSS; VCANH = -3V; CANL: floating 12
CANL Short Circuit Output Current IO(SC) 75 115 mA VTXD = VSS; VCANL = +18V; CANH: floating 12
Recessive Differential Input Voltage VDIFF(R)(I) -4 0.5 V -12V < V(CANH, CANL) < +12V; Note 3 12
Dominant Differential Input Voltage VDIFF(D)(I) 0.9 9 V -12V < V(CANH, CANL) < +12V; Note 3 12
Differential Receiver Threshold VTH(DIFF) 0.5 0.7 0.9 V -12V < V(CANH, CANL) < +12V; Note 3 12
Differential Input Hysteresis VHYS(DIFF) 30 200 mV See Figure 2-6, (Note 1) 12
Single Ended Input Resistance RCAN_H, RCAN_L 6 50 kΩ Note 1 12
Internal Resistance Matching mR -3 0 3 % VCANH = VCANL (Note 1) 12
Differential Input Resistance RDIFF 12 25 100 kΩ Note 1 12
Internal Capacitance CIN 20 pF 1 Mbps (Note 1) 12
Differential Internal Capacitance CDIFF 10 pF 1 Mbps (Note 1) 12
CANH, CANL Input Leakage ILI -5 5 µA VDD = VTXD = VS = 0V. VCANH = VCANL = 5 V. 12
High-Level Input Voltage (TXD, S) VIH 2 V MCP2557FD 12
Low-Level Input Voltage (TXD, S) VIL -0.3 0.8 V MCP2557FD 13
High-Level Input Current IIH -1 1 µA 13
TXD Low-Level Input Current IIL(TXD) -270 -150 -30 µA 13
S Low-Level Input Current IIL(S) -30 -1 µA 13
RXD Low-Level Output Voltage VOL 0.4 V IOL = 4 mA; typical 8 mA 13
Shutdown Junction Temperature TJ(SD) 165 175 185 °C -12V < V(CANH, CANL) < +12V (Note 1) 13
Shutdown Temperature Hysteresis TJ(HYST) 15 30 °C -12V < V(CANH, CANL) < +12V (Note 1) 13
Bit Time tBIT 0.125 69.44 µs 14
Nominal Bit Rate NBR 14.4 8000 kbps 14
Delay TXD Low to Bus Dominant tTXD-BUSON 50 85 ns Note 1 14
Delay TXD High to Bus Recessive tTXD-BUSOFF 40 85 ns Note 1 14
Delay Bus Dominant to RXD tBUSON-RXD 70 85 ns Note 1 14
Delay Bus Recessive to RXD tBUSOFF-RXD 110 145 ns Note 1 14
Propagation Delay TXD to RXD tTXD-RXD 90 120 ns Worst case of tLOOP(R) and tLOOP(F) Figure 2-9 15
Propagation Delay, Rising Edge tLOOP(R) 90 120 ns 15
Propagation Delay, Falling Edge tLOOP(F) 80 120 ns 15
Delay Silent to Normal Mode tWAKE 7 30 µs Negative edge on S 15
Permanent Dominant Detect Time tPDT 0.8 1.9 5 ms TXD = 0V 15
Thermal Resistance, 8LD SOIC θJA 149.5 °C/W 19
DC Voltage at CANH, CANL -58 58 V 10
Supply Voltage VDD 7 V 10
Storage Temperature -55 150 °C 10
Operating Ambient Temperature -40 150 °C 10

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 b) MCP2557FD-H/SN: 8-lead, Plastic Small Outline SOIC pack￾age. 33

CAD (KiCad official)

  • Symbol: MCP2557FD-H
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: mcp2557fd-h-etched.step / mcp2557fd-h-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp2557fd-h.step / mcp2557fd-h.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (36 pp, sha256 cf1d404e4b3aaf8a, retrieved 2026-10-23, 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