MCP2551T-I/SN - 1 Mb/s CAN Transceiver | Microchip
料号： MCP2551T-I/SN ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.0218 | $1.02 |
| 10 | $1.0218 | $10.22 |
| 100 | $1.0218 | $102.18 |
| 500 | $1.0218 | $510.90 |
| 1,000 | $1.0218 | $1,021.80 |
MCP2551T-I/SN 概述
A CAN transceiver is the physical-layer interface between a CAN controller and a multidrop differential bus. The controller generates and interprets CAN frames, while the transceiver converts controller logic into dominant and recessive differential states and converts bus differential voltage into a readable receive signal. This separation allows a microcontroller or dedicated CAN controller to implement the protocol while the MCP2551 handles bus-level voltage, noise immunity, and fault containment.
Key verified characteristics include differential transmit and receive, operation up to 1 Mb/s, a 4.5 V to 5.5 V supply range, ISO-11898 compatibility including 24 V requirements, and fault-tolerant operation. The T-I/SN ordering code identifies the 8-pin SOIC, industrial-temperature, tape-and-reel ordering configuration; the verified distributor result describes the device as one transmitter and one receiver in an 8-SOIC package.
The MCP2551 family is suitable for industrial automation, automotive electronics, embedded control, instrumentation, and other CAN networks operating with a 5 V transceiver supply. Designers should still validate the complete system against its required ISO-11898 revision, bus topology, termination, fault behavior, EMC requirements, and controller timing. The manufacturer datasheet is the controlling source for absolute maximum ratings, DC and AC electrical characteristics, timing, dimensions, and detailed application guidance.
Use a 5 V regulated transceiver rail, connect the controller TXD and RXD pins according to the datasheet, and terminate the differential bus at both physical ends with the resistance specified by the selected bus standard. Keep the CANH and CANL routing as a controlled differential pair, provide a solid ground reference, and avoid long unprotected stubs. Decoupling should follow the manufacturer recommendations and be placed close to the supply pins.
The key engineering trade-off is that this is a classic 5 V SOIC transceiver rather than a smaller, lower-voltage or automotive-packaged alternative. The result is useful because it combines a straightforward controller interface, established CAN physical-layer behavior, and compact 8-pin packaging. This page consolidates verified source links, commercial availability information, replacement constraints, and practical PCB guidance that should be checked against the latest manufacturer documentation before release to production.
直接替换替代料： MCP2551T-I/SN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MCP2551T-I/SN （相同外形与封装尺寸） ——差异在于 Package, Product Type, Supply Voltage, RoHS Status, Distributor Package Description.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料MCP2551T-I/SN 规格参数
| Product Type | High-speed CAN transceiver |
| CAN Data Rate | Up to 1 Mb/s |
| Supply Voltage Range | 4.5 V to 5.5 V |
| Transmitter Count | 1 |
| Receiver Count | 1 |
| 接口 | Differential CAN transmit and differential receive |
| ISO Compatibility | ISO-11898, including 24 V requirements |
| Fault Tolerance | Fault-tolerant high-speed CAN transceiver |
| 封装 | 8-pin SOIC |
| Ordering Package Suffix | SN tape-and-reel ordering code |
| Temperature Grade Code | I industrial-temperature ordering code |
| 安装类型 | Surface mount |
| Distributor Package Description | 1/1 transceiver, half CANbus, 8-SOIC |
| LCSC Listed Unit Price | From USD 1.0218 |
| LCSC Listed Inventory | 30,324 units |
MCP2551T-I/SN 引脚配置
| 引脚 1 | VIO — Logic-side supply input; verify exact pin assignment in the manufacturer datasheet |
| 引脚 2 | RXD — Receive data output to the CAN controller; verify exact pin assignment in the manufacturer datasheet |
| 引脚 3 | TXD — Transmit data input from the CAN controller; verify exact pin assignment in the manufacturer datasheet |
| 引脚 4 | GND — Ground reference |
| 引脚 5 | CANH — CAN high-side differential bus connection |
| 引脚 6 | CANL — CAN low-side differential bus connection |
| 引脚 7 | VCC — Transceiver supply input |
| 引脚 8 | NC — No connect or package-specific reserved function; confirm against the manufacturer datasheet |
典型应用
MCP2551T-I/SN 适用于 6 应用s: Industrial Automation CAN Bus, Automotive Electronics CAN Network, Embedded Sensor and Actuator Network, Robotics and Motor-Control Systems, Instrumentation and Test Equipment, Building Access and Security Systems.
Industrial Automation CAN Bus
The MCP2551T-I/SN fits an industrial automation node that connects a CAN controller to a field bus. Its 4.5 V to 5.5 V supply range supports a regulated 5 V transceiver rail, while the 1 Mb/s capability provides margin for controller and diagnostic traffic. Use CANH and CANL as a controlled differential pair, terminate the bus at both ends, and keep the transceiver close to the controller. Verify EMC, grounding, fault containment, and the required industrial temperature range before production release.
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Automotive Electronics CAN Network
The MCP2551T-I/SN can serve as the physical-layer device in a 5 V automotive or mobile CAN subsystem when its specified operating and qualification requirements are met. The manufacturer describes ISO-11898 compatibility including 24 V requirements, fault tolerance, and differential transmit and receive. The I ordering suffix indicates an industrial-grade code, but the supplied data does not verify AEC-Q100 qualification. Automotive production therefore requires separate qualification, transient protection, EMC validation, and manufacturer approval.
推荐
Embedded Sensor and Actuator Network
MCP2551T-I/SN is appropriate when a controller must communicate with remote sensors or actuators over a short CAN network. Its 1 Mb/s capability supports higher-rate diagnostic traffic, while differential signaling helps reject common-mode noise when the bus is routed correctly. Place the transceiver near the CAN connector and controller, use a solid ground reference, and provide termination at the physical bus endpoints. Validate cable length, propagation delay, protection, and the controller’s CAN timing for the deployed network.
推荐
Robotics and Motor-Control Systems
The MCP2551T-I/SN can connect a robot controller to motor, encoder, or safety-related CAN nodes. Differential CANH/CANL routing, fault tolerance, and operation up to 1 Mb/s make the transceiver suitable for a wired control backbone when layout and protection are implemented carefully. Separate noisy motor power paths from the communication route, use common-mode protection appropriate to the installation, and test bus behavior during motor startup and fault conditions. Confirm the controller’s CAN timing and the selected bus topology before releasing the design.
推荐
Instrumentation and Test Equipment
MCP2551T-I/SN is suitable for laboratory and field instrumentation that distributes measurements or commands over CAN. The 5 V supply range fits conventional embedded instrumentation, and the 1 Mb/s rate supports responsive status and configuration traffic. Keep the differential pair away from high-current switching nodes, provide a low-impedance ground path, and place termination only at the designated bus endpoints. Because the supplied data does not provide full AC timing or transient immunity values, use the manufacturer datasheet and application tests for precision equipment.
推荐
Building Access and Security Systems
The MCP2551T-I/SN can be used in access-control, monitoring, and building-automation nodes that use a wired CAN backbone. Differential signaling supports robust communication over longer cable runs compared with a single-ended logic link, provided the bus is correctly terminated and protected. Use a 5 V transceiver supply, preserve the recommended CANH/CANL impedance, and provide surge protection at externally accessible connectors. Confirm the required environmental temperature, isolation strategy, and compliance requirements for the finished installation.
推荐
推荐产品汇总
工程参考数据： MCP2551T-I/SN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MCP2551-E/SN | MCP2551T-E/SN | MCP2551-I/SN | SN65HVD231DR | SN65HVD251 |
|---|---|---|---|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Texas Instruments | Texas Instruments |
关键差异点
- Established MCP2551 CAN physical-layer positioning （对比 SN65HVD230)
- Same-family sourcing options （对比 MCP2551-E/SN)
- 5 V supply alignment with conventional embedded systems （对比 SN65HVD251)
- Fault-tolerant differential interface （对比 SN65HVD231DR)
设计说明
Route CANH and CANL as a closely coupled differential pair with continuous reference to the ground plane. Keep the pair away from switching-power nodes, motor traces, clocks, and high-current return paths. Place the transceiver close to the CAN connector or controller-side interface, and follow the manufacturer datasheet for the recommended supply decoupling. Verify the final layer stack and controlled impedance if the installation requires a defined differential impedance.
Do not assume that a matching SOIC-8 footprint guarantees electrical equivalence. MCP2551T-I/SN is specified for a 4.5 V to 5.5 V supply, while replacement parts may differ in supply voltage, standby behavior, receiver shutdown, VREF, or pin function. For SN65HVD231, SN65HVD230, and SN65HVD251, compare the manufacturer data and test the controller interface, fault response, and bus timing before substituting.
Terminate the CAN bus only at the two physical endpoints using the resistance specified by the selected CAN network standard. Avoid unnecessary stubs and keep the differential pair geometry consistent across the board and cable transition. Check propagation delay, bus length, controller bit timing, and transceiver waveform behavior with an oscilloscope. The verified data establishes 1 Mb/s capability, but the usable network rate depends on the complete system configuration.
Provide a stable 5 V transceiver rail within the verified 4.5 V to 5.5 V range and decouple it close to the device using the manufacturer’s recommended values. CANH and CANL are differential bus outputs, not logic-level supplies; do not power downstream loads from either node. If the transceiver is placed near an exposed connector, add appropriately rated surge and ESD protection, and confirm that protection capacitance does not distort bus rise and fall times.
Use the manufacturer datasheet for the exact electrical dissipation and package thermal limits; the supplied search data does not provide those figures. Keep the SOIC-8 package within its specified ambient and junction-temperature limits, provide adequate copper around the device where the PCB design permits, and avoid enclosing the transceiver in an unventilated enclosure that traps heat. Validate the enclosure temperature during worst-case bus traffic and fault conditions.
合规信息
The supplied verified data identifies the manufacturer, package, electrical function, CAN data rate, supply range, and ISO-11898 compatibility, but does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Automotive use requires separate qualification review.