MCP2551-I/P - 5V High-Speed CAN Transceiver DIP-8 | Microchip
Артикул: MCP2551-I-P ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $2.5 | $2,50 |
| 10 | $2.2 | $22,00 |
| 100 | $1.85 | $185,00 |
| 500 | $1.55 | $775,00 |
| 1.000 | $1.3 | $1.300,00 |
MCP2551-I-P Обзор
A CAN transceiver is a physical-layer interface IC that bridges a digital CAN controller (typically a microcontroller with a CAN module) and the differential CAN bus wiring. It converts single-ended TXD logic into differential bus voltages on transmit, and converts differential bus voltages back into single-ended RXD logic on receive. CAN transceivers are the physical foundation of robust in-vehicle networking and industrial fieldbuses, and they are governed by the ISO 11898 family of standards.
Key features of the MCP2551-I/P include: 1/1 (one driver, one receiver) half-duplex topology, 200 mV receiver hysteresis for noise immunity, thermal shutdown protection, short-circuit protection to battery and ground on the bus pins (up to ±40 V), and an operating temperature range of -40C to +85C (the "I" industrial grade). The device is widely deployed in automotive ECUs, industrial CAN nodes, building automation, and any embedded system that requires ISO 11898 compliant physical-layer connectivity.
The MCP2551-I/P uses a bipolar architecture with internal slope control to limit EMI from the bus driver edge rates. The receiver inputs feature high common-mode range so the part tolerates ground offset between nodes. In addition, the device includes a VREF pin for a stable mid-supply reference voltage that older controllers require, making it a backwards-compatible choice for legacy CAN designs.
Typical applications include automotive body and chassis ECUs, industrial CANopen and DeviceNet nodes, OBD-II diagnostic interfaces, agricultural machinery networks, and elevator or building automation controllers. Because the part is in a through-hole PDIP-8 package, it is also commonly used in prototyping, education kits, and hobby robotics (e.g. Arduino CAN shields) where through-hole assembly is preferred.
When designing with the MCP2551-I/P, observe ISO 11898 bus termination requirements: a 120 ohm termination resistor at each end of the bus, twisted-pair cabling, and adequate common-mode choke or ESD protection for harsh environments. Also note that Microchip's newer MCP2561/2 family is the recommended migration path for new designs.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Аналоги без доработки для MCP2551-I-P — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MCP2561-I/P
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MCP2562-I/P
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SN65HVD251P
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SN65HVD231P
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SN65HVD232P
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
TJA1050T
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MCP2551-I-P Характеристики
| Функция | CAN Transceiver |
| Number of Drivers/Receivers | 1/1 |
| Protocol | CANbus |
| Скорость передачи данных | Up to 1 Mb/s |
| Напряжение питания | 4.5 V to 5.5 V |
| Receiver Hysteresis | 200 mV |
| Рабочая температура | -40C to +85C (Industrial) |
| Bus Pin Voltage Tolerance | ±40 V (CANH, CANL) |
| Топология | Half-duplex |
| Корпус | 8-PDIP (0.300 inch, 7.62 mm) |
| Тип монтажа | Through-Hole |
| Slope Control | Yes (selectable high-speed / slope-control) |
| Standby Pin | Yes (low-power mode) |
| VREF Output | Yes |
| Тепловая защита | Yes |
| Lead-Free / RoHS | Compliant (Pb-free matte-tin finish) |
| Уровень MSL | 1 (unlimited floor life) |
| Standard Compliance | ISO-11898 |
Конфигурация выводов MCP2551-I-P
| Контакт 1 | TXD — Transmit data input from CAN controller |
| Контакт 2 | VREF — Reference voltage output (~0.45 x VDD) |
| Контакт 3 | VSS — Ground |
| Контакт 4 | RXD — Receive data output to CAN controller |
| Контакт 5 | VDD — Supply voltage, 4.5 V to 5.5 V |
| Контакт 6 | CANL — CAN low bus line (differential) |
| Контакт 7 | CANH — CAN high bus line (differential) |
| Контакт 8 | Rs — Slope control / standby mode select |
Типичное применение
MCP2551-I-P подходит для 6 применениеs: Automotive Body Control ECU, Industrial CANopen Node, OBD-II Diagnostic Interface, Agricultural Machinery Network, Building Automation & HVAC Controller, Education & Prototyping (Arduino CAN Shield).
Automotive Body Control ECU
The MCP2551-I/P is a drop-in physical-layer interface for body-control ECUs that command lights, wipers, mirrors, and door modules over a 5V CAN bus. Its 4.5 V to 5.5 V supply matches legacy 5V microcontrollers, the differential bus pins tolerate +/-40 V transients from load-dump events, and the slope-control input lets designers trade edge speed for EMI in cable harnesses. Use a 120 ohm termination at each bus end and verify common-mode choke selection for OEM conformance.
Рекомендуется
Industrial CANopen Node
In CANopen networks for servo drives, sensors, and motor starters, the MCP2551-I/P connects a CAN controller to the differential twisted-pair bus with ISO-11898 electrical compliance. Its 1 Mb/s capability covers CANopen DS301 profiles, the 200 mV receiver hysteresis rejects noise from VFD and motor inverters, and the standby pin enables low-power sleep states mandated by CiA drift-away profiles. Place a common-mode choke on CANH/CANL and add TVS diodes for surge protection.
Рекомендуется
OBD-II Diagnostic Interface
The MCP2551-I/P is widely used in OBD-II scan tools and vehicle diagnostic bridges because it is bus-fault tolerant (CANH/CANL survive +/-40 V transients when miswired) and runs from a single 5V rail taken from the OBD-II connector. Its ISO-11898 compliance covers all on-board automotive CAN baud rates up to 1 Mb/s, including 500 kbps and 250 kbps typical vehicle networks. Pair with a 5V MCU and a small isolated DC-DC for safe vehicle-side connection.
Рекомендуется
Agricultural Machinery Network
Tractors, harvesters, and ISOBUS implements use CAN bus for implement communication, and the MCP2551-I/P is a field-proven transceiver for harsh-environment nodes. Its industrial -40C to +85C operating range, high bus-pin voltage tolerance, and robust receiver with 200 mV hysteresis tolerate long cable runs and significant ground offset between connected vehicles. Use IP67-rated connectors and a sealing boot to keep moisture off the PDIP leads in outdoor mounting.
Рекомендуется
Building Automation & HVAC Controller
Building automation networks frequently use CAN-based protocols (BACnet MS/TP variants, vendor-specific buses) for HVAC, lighting, and elevator controllers. The MCP2551-I/P's 5V supply and 1 Mb/s data rate cover short-bus, high-throughput controller nodes. Its through-hole PDIP package simplifies prototyping on perforated board, while thermal shutdown and short-circuit protection guard against wiring faults in ceiling and riser installations.
Рекомендуется
Education & Prototyping (Arduino CAN Shield)
The MCP2551-I/P in PDIP-8 is a favorite for hobbyist and university CAN projects because the DIP package is hand-solderable on perfboard and breadboard-compatible with Arduino shields. Its 5V supply aligns with classic Arduino Uno/Mega boards, eliminating the need for level translation. Use it to teach ISO-11898 framing, OBD-II decoding, or robotics multi-node communication; later migrate to the SOIC-8 MCP2551-I/SN for volume production.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MCP2551-I-P — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MCP2561-I/P | MCP2562-I/P | SN65HVD251P | SN65HVD231P | SN65HVD232P | TJA1050T |
|---|---|---|---|---|---|---|---|
| Package | 8-PDIP (0.300 inch) | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Supply Voltage | 4.5 V to 5.5 V | 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 | 3.0 V to 3.6 V | 4.75 V to 5.25 V |
| Data Rate | Up to 1 Mb/s | Up to 1 Mb/s | Up to 1 Mb/s | Up to 1 Mb/s | Up to 1 Mb/s | Up to 1 Mb/s | Up to 1 Mb/s |
| VREF Output | Yes | Yes | Yes | Yes | No | No | No |
| Standby Pin | Yes | Yes | Yes | Yes | Yes (low-power mode turns off receiver) | No | No (low-power via separate pin) |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| Bus Pin Tolerance | +/-40 V | +/-40 V (higher ESD) | +/-40 V (higher ESD) | +/-36 V | +/-36 V | +/-36 V | +/-40 V |
Ключевые отличия
- Pin-compatible with the TI SN65HVD251 - cross-brand drop-in option (против SN65HVD251P)
- Through-hole PDIP-8 availability vs SOIC-8 scarcity (против MCP2551-I/SN)
- VREF output for legacy 5V controllers (против SN65HVD230)
Заметки по проектированию
Per the Microchip datasheet (DS20001667G), the MCP2551-I/P requires a 4.5 V to 5.5 V supply with a decoupling capacitor of at least 1 uF placed within 5 mm of the VDD pin. Add a bulk 10 uF aluminum or tantalum cap if the supply comes from a long trace or shared regulator; the part draws approximately 10-15 mA in active mode and roughly 5 uA in standby (Rs low).
Common mistakes include using the MCP2551 with a 3.3V MCU (logic levels will not register reliably - TXD must reach at least 2.0V for a dominant state), omitting the 120 ohm termination at bus ends (causes signal reflections and bit errors), and forgetting that CAN requires both bus pins to be biased - the bus is a differential pair, not single-ended. Always measure the recessive bus voltage (~2.5V with both ends terminated) before connecting to a network.
Keep CANH and CANL traces short, matched in length, and routed as a differential pair with characteristic impedance near 120 ohms. Add a common-mode choke and TVS diode array (e.g. NXP PESD1CAN) at the bus connector for ESD and transient protection. Isolate the MCP2551 ground from high-current digital grounds using a star-ground or ferrite bead to avoid bus-pin ground noise coupling into the receiver.
Информация о соответствии
RoHS and lead-free compliant per Microchip product page. The I grade is industrial (-40C to +85C), not AEC-Q100 qualified. For automotive ECUs requiring AEC-Q100, choose an AEC-Q100 qualified variant or add the qualified part as a separate source.
