MCP2551-E/SN - High-Speed CAN Transceiver 1Mbps SOIC-8 | Microchip
Référence : MCP2551-E-SN ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.95 | $1,95 |
| 10 | $1.76 | $17,60 |
| 100 | $1.42 | $142,00 |
| 500 | $1.18 | $590,00 |
| 1 000 | $0.98 | $980,00 |
MCP2551-E-SN Présentation
A CAN transceiver is the analog physical-layer device that converts the digital TX/RX logic signals from a CAN controller (such as the MCP2515) into the differential voltage levels required on a CAN bus. The CAN protocol itself is defined by ISO 11898 and is widely used in automotive (CAN, CAN-FD), industrial (CANopen, DeviceNet), and medical equipment because of its robust differential signaling, built-in arbitration, and reliable behavior in electrically noisy environments. Transceivers like the MCP2551 sit in the hierarchy: physical-layer transceiver -> CAN controller -> host MCU -> application layer.
Key features include slope control for reduced EMI (selectable via the RS pin), a low-power standby mode (pin S1), thermal shutdown protection, short-circuit protection on the bus pins (CANH/CANL) to battery and ground, and an internal VREF output for biasing split termination. The device survives load-dump events up to ±40V on the bus pins, exceeding the ISO-7637 transient specification. Up to 112 nodes can be connected to a single CAN bus segment.
Typical applications include automotive body and chassis networks, industrial CANopen and DeviceNet nodes, building automation (BACnet), fleet management and telematics, and any embedded system that needs ISO-11898-compliant differential CAN communication. The 5V VCC and 8-pin SOIC footprint also make it a convenient drop-in upgrade for legacy MCP2551 designs being migrated to longer lead-time alternatives.
When designing with this device, place a 100nF decoupling capacitor close to VCC and use a split termination network (typically 120 ohm total with two 60 ohm resistors and a 10nF capacitor to ground) to match the bus impedance and suppress common-mode noise. Ensure the RS pin is tied to ground for high-speed mode or through a resistor to slow the slew rate if EMI is a concern.
Alternatives de remplacement direct pour MCP2551-E-SN — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MCP2551-E-SN (même facteur de forme et même empreinte) — différant par Package, Protocol.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MCP2561-E/SN
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MCP2551T-E/SN
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →SN65HVD251DR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SN65HVD230DR
✅ Remplacement direct✓ En stock
$0.94 / unité
Voir la fiche technique →TJA1050T/CM,118
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MCP2551-E-SN Spécifications
| Fonction | CAN Transceiver |
| Protocol | ISO-11898 (CAN, CAN-FD ready) |
| Number of Drivers/Receivers | 1/1 |
| Débit de données | 1 Mbps |
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
| Supply Current (Normal Mode, Recessive) | 10 mA typical |
| Bus Fault Voltage (CANH, CANL) | -40 V to +40 V |
| Load Dump Voltage | ISO-7637 compliant |
| Plage de température de fonctionnement | -40 C to +125 C (E = Extended) |
| Boîtier | 8-SOIC (SN), 3.90 mm body width |
| Type de montage | Surface Mount |
| Niveau MSL | 1 |
| Statut RoHS | Compliant |
Configuration des broches de MCP2551-E-SN
| Broche 1 | TXD — Transmit data input from CAN controller |
| Broche 2 | VCC — 4.5V-5.5V power supply input |
| Broche 3 | VREF — Reference voltage output (nominally VCC/2) |
| Broche 4 | RXD — Receive data output to CAN controller |
| Broche 5 | VSS — Ground |
| Broche 6 | CANL — Low-level CAN bus line |
| Broche 7 | CANH — High-level CAN bus line |
| Broche 8 | RS — Slope control input (GND for high-speed mode) |
Applications typiques
MCP2551-E-SN convient pour 6 applications: Automotive Body and Chassis CAN Networks, Industrial CANopen and DeviceNet Nodes, Building Automation BACnet MS-TP over CAN, Fleet Management and Telematics Gateways, Medical Device CAN Communication (Non-Safety-Critical), Robotics and CNC Machine Tool Networks.
Automotive Body and Chassis CAN Networks
The MCP2551-E/SN's -40V to +40V bus fault tolerance and ISO-11898 compliance, including 24V requirements, make it a fit for body control modules, door/window nodes, lighting clusters and instrument clusters running 1 Mbps classic CAN at 12V battery bus. The exposed -40C to +125C operating range covers under-hood and dashboard environments. Paired with a Microchip CAN controller such as the MCP2515 or MCP2517FD and a host MCU like the S912XEQ512J2MAL, it provides a complete ISO-11898 node with hardware arbitration, automatic bit stuffing and the differential noise immunity required for harness lengths up to 40 m at 1 Mbps. Unlike 3.3V CAN-FD-only transceivers, the MCP2551 remains a workhorse for non-FD automotive ECUs.
Recommandé
Industrial CANopen and DeviceNet Nodes
For CANopen (CiA 301) and DeviceNet (Volume 1, CIP on CAN) fieldbus nodes used in PLC I/O blocks, motor starters and hydraulic valve drivers, the MCP2551-E/SN delivers the ISO-11898 compliant physical layer that these protocols require at 125 kbps, 250 kbps, 500 kbps or 1 Mbps. Its slope-control RS pin allows the slew rate to be slowed with a single resistor to reduce EMI in long-cable installations exceeding 30 m. The 1/1 driver/receiver configuration and split-termination support (using the VREF output) simplify EMC-compliant board layouts. Pair it with a microcontroller from the Site MPN list such as MK22FN1M0AVLK12 for deterministic CANopen processing.
Recommandé
Building Automation BACnet MS-TP over CAN
BACnet MS-TP (Master-Slave/Token-Passing) networks on RS-485 are common in HVAC controllers, but several modern BACnet profiles now run over CAN at 50-125 kbps using the ISO-11898 physical layer. The MCP2551-E/SN's 4.5V-5.5V single-supply operation aligns with typical 5V MCU designs in thermostats, variable-air-volume (VAV) boxes and rooftop unit controllers. The exposed RS pin allows the baud rate flexibility these legacy networks require, while the -40C to +125C range covers unconditioned mechanical rooms. The 8-SOIC footprint fits within the compact PCBs of wall-mounted controllers.
Recommandé
Fleet Management and Telematics Gateways
Fleet telematics units read CAN bus data from a vehicle's OBD-II port or J1939 backbone to extract vehicle speed, RPM, fuel level and DTCs. The MCP2551-E/SN's 24V bus fault tolerance matches the 12V/24V truck electrical system, and its low standby current allows sleep modes during parked periods. Used with an LTE/NB-IoT modem and a host MCU such as MK22FN1M0AVLK12R, the design supports SAE J1939 (which is CAN-based) and ISO-15765 (OBD-II CAN) at 250 kbps and 500 kbps. The 8-SOIC package simplifies the small-form-factor gateway PCB layout.
Recommandé
Medical Device CAN Communication (Non-Safety-Critical)
Hospital beds, infusion pumps, patient monitors and laboratory analyzers increasingly use CAN for cable-free inter-module communication because of its differential noise immunity in the presence of electrosurgical equipment. The MCP2551-E/SN provides a 1 Mbps, ISO-11898 compliant interface inside non-life-sustaining subsystems such as hospital-bed position sensors and pump battery packs. The 8-SOIC small footprint, -40C to +125C range and 100 nF decoupling simplicity ease integration into compact medical PCBs. For mission-critical patient-monitor buses, however, AEC-Q100-qualified parts like MCP2561FD are recommended.
Recommandé
Robotics and CNC Machine Tool Networks
CNC machines, articulated robot arms and AGVs (moving-platform automation stations) use CANopen DS301 or DS402 profiles to coordinate multi-axis servo drives and I/O over a single differential bus. The MCP2551-E/SN's programmable slew rate via the RS pin reduces EMI in cable-dense industrial cabinets, while the 5V VCC aligns with the legacy 5V logic often present in stepper and servo drive interfaces. Its robust bus fault tolerance protects against mis-wiring during field installation. Combined with a Site MPN-listed MCU such as SPC5645SF1VVU, it forms a complete servo drive node.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MCP2551-E-SN — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MCP2561-E/SN | SN65HVD251DR | SN65HVD230DR | TJA1050T/CM,118 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Package | 8-SOIC (SN) | 8-SOIC (SN) - same | 8-SOIC (D) - same footprint | 8-SOIC (D) - same footprint | 8-SOIC - same footprint |
| Maximum Data Rate | 1 Mbps | 1 Mbps (CAN-FD ready) | 1 Mbps | 1 Mbps | 1 Mbps |
| Supply Voltage (VCC) | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 3.0 V to 3.6 V | 4.75 V to 5.25 V |
| Bus Fault Voltage | -40 V to +40 V (24V ready) | -40 V to +40 V | -27 V to +40 V | -27 V to +40 V | -27 V to +40 V |
| Slope Control (RS pin) | Yes (external pin) | Yes (external pin) | Yes (external pin) | Yes (external pin) | No (fixed slew rate) |
| Standby Mode | Yes (S1 pin) | Yes | Yes | Yes | No (splits mode instead) |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C |
| Approx. Unit Price @ 1k (USD, 2026-10-20) | 0.98 | 1.10 | 1.85 | 1.65 | 1.40 |
Principaux différenciateurs
- 24V bus fault tolerance in standard SOIC-8 (vs SN65HVD251DR)
- Long-running active production part with broad distributor stock (vs MCP2551T-E/SN)
- Programmable slope control via dedicated RS pin (vs TJA1050T/CM,118)
Notes de conception
Place a 100 nF X7R ceramic decoupling capacitor as close as possible to the VCC pin (pin 2). Keep the ground return (VSS pin 5) short and direct to the ground plane. Route the CANH and CANL traces as a 100 ohm differential pair with matched length and continuous ground reference underneath; a 6-8 mil trace width over a 4-6 mil dielectric on FR-4 typically yields the required impedance. Avoid routing the bus traces near switching nodes or parallel to high-current traces.
Use a split termination network (60 ohm + 60 ohm between CANH and CANL with a 10 nF capacitor to ground at the center tap) at each end of the bus. This combination matches the 120 ohm ISO 11898 characteristic impedance and provides a low-impedance path to ground for common-mode noise, dramatically improving radiated emissions and ESD immunity. The MCP2551's VREF output (pin 3) can be left floating or used to bias optional circuitry, but is not required for split termination.
The RS pin (pin 8) defaults to high-speed mode when tied to ground. Tie RS to VCC (or leave it open, depending on datasheet revision) to enter standby mode. If EMI or ringing is observed on long bus stubs at 1 Mbps, insert a 10 kohm-100 kohm resistor from RS to ground to reduce the slew rate. Estimated: slew rate scales inversely with the RS resistor value per the MCP2551 datasheet DS21667E. Do not exceed 24 V continuous on the bus pins - although the part survives ±40 V transients, sustained 24 V operation on CANH/CANL is acceptable per ISO 11898-24V.
Estimated power dissipation: at VCC = 5 V and recessive bus state the device draws approximately 10 mA typical (50 mW). During dominant bus transmission the supply current rises to roughly 70 mA typical (350 mW). For battery-powered or standby applications the S1 pin (no-connect on MCP2551-E/SN, which uses RS for standby on some variants - check datasheet) can drop quiescent current to microamp levels. Decouple VCC with both a 100 nF high-frequency and a 4.7 uF bulk capacitor for robust hot-plug behavior.
Informations de conformité
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - choose MCP2551FD-E/SN variant for automotive AEC-Q100 applications. MSL-1 rated, lead-free matte-tin plating.
