interface

MCP2551

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This Microchip datasheet covers the MCP2551, a high-speed CAN transceiver supporting 1 Mb/s and ISO-11898 standards. It serves as an interface between controllers and physical buses, offering differential output for 12V/24V systems with up to 112 nodes. Key features include externally-controlled slope for reduced RFI emissions, ground fault detection, and robust protection against short circuits, transients, and thermal shutdown. The device operates across industrial and extended temperature ranges (-40°C to +85°C or +125°C).

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current 75 mA Dominant; VTXD = 0.8V; VDD
output current -200 mA VCANH = -5V
supply voltage range 4.5 V 5.5 V
operating temperature -40 °C 85 °C
propagation delay 35 ns
data rate 1 Mbps
operate time 1 µs Rising edge on TXD while device is in permanent Dominant state
output voltage high 700 mV IOH = 8 mA
output voltage low 800 mV IOL = 8 mA
channel count 1
driver count 1
receiver count 1
03 — Alternatives

Closest matches to MCP2551

SN65LBC184 14.3× higher propagation delay, 6.7× higher supply voltage range, 6.2× lower quiescent current
MCP2518FD 5.5× higher supply voltage range, 5.0× lower quiescent current, 2.4× higher operating temperature
TJA1043 6.7× higher supply voltage range, 5.0× higher data rate, 2.4× higher operating temperature
ISO1050DUBR 6.6× higher output voltage high, 5.7× higher supply voltage range, 4.0× lower output voltage low
SN65HVD230 7.5× lower quiescent current, 5.0× lower output current, 4.4× higher supply voltage range
MCP2515 7.5× lower quiescent current, 5.5× higher supply voltage range, 2.9× higher propagation delay
TJA1042BT 15.0× lower quiescent current, 6.7× higher supply voltage range, 5.0× higher data rate
TJA1051 6.7× higher supply voltage range, 5.0× higher data rate, 2.4× higher operating temperature
04 — FAQ

Frequently asked questions

What is the channel count of the MCP2551?

The channel count is 1.

What is the maximum data rate of the MCP2551?

The maximum data rate is 1 Mbps.

What is the driver count for the MCP2551?

The driver count is 1.

What is the operate time when there is a rising edge on TXD while the device is in the permanent Dominant state?

The operate time is 1 µs.

What is the maximum operating temperature for the MCP2551?

The maximum operating temperature is 85 °C.

What is the output current when VCANH = -5V?

The output current is -200 mA.

What is the output voltage high when IOH = 8 mA?

The output voltage high is 700 mV when IOH = 8 mA.

What is the maximum output voltage low when IOL = 8 mA?

The output voltage low is 800 mV when IOL = 8 mA.

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