TJA1051T - High-Speed CAN Transceiver | NXP Semiconductors
料号： TJA1051T ✓ 量产中TJA1051T 概述
A CAN transceiver is the physical-layer interface between a digital CAN controller and the wired CAN network. It converts controller logic levels into differential bus signals and converts received bus levels into a logic signal understood by the controller. The two-wire CAN bus consists of CANH and CANL conductors, allowing multiple nodes to communicate over a shared differential network while reducing sensitivity to common-mode noise.
The TJA1051 family is intended for high-speed in-vehicle communication systems where robust differential signaling and direct integration with automotive microcontrollers are important. The manufacturer describes the TJA1051T as a high-speed CAN transceiver, and its compatibility with the TJA1050 provides a documented migration path for designs that retain an existing SOIC-8 footprint and pin arrangement. The TJA1051T/3 variant is the 3 V-compatible option when the connected CAN controller uses a lower supply voltage.
Electrical operating details such as maximum data rate, supply range, transmitter propagation delay, receiver thresholds, bus-fault tolerance, ESD ratings, thermal limits, and package dimensions were not included in the supplied search excerpts. Those values are therefore not restated here; engineers should verify them in the NXP TJA1051 manufacturer data sheet before release. The data sheet also distinguishes standard, /3, and /E product variants, which should not be treated as identical ordering codes.
TJA1051T is typically positioned between a CAN-capable microcontroller and the CANH/CANL bus network. Practical implementations require correct termination, common-mode grounding, protection strategy, and transceiver-loop layout. The SOIC-8 package makes the device suitable for conventional surface-mount PCB assembly, although production designs must use the exact land pattern and pin definitions specified by NXP.
This page consolidates the verified NXP product-page information, manufacturer data-sheet link, distributor references, and identified same-footprint alternatives. It also distinguishes documented TJA1051 variants and highlights the engineering trade-offs between the standard TJA1051T, the 3 V-compatible TJA1051T/3, and the Silent Mode TJA1051T/2Z. Pricing, availability, and detailed electrical ratings require confirmation from current authorized distribution channels as of 2026-10-28.
直接替换替代料： TJA1051T ——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： TJA1051T （相同外形与封装尺寸） ——差异在于 Package, Product Type, Bus Interface, Application.
TJA1051T/3,118
✅ 直接替换📋 参考替代料（不在目录中）
TJA1051T/2Z
✅ 直接替换联系询价
查看数据手册 →TJA1042T/1J
✅ 直接替换联系询价
查看数据手册 →TJA1042T/3,112
✅ 直接替换📋 参考替代料（不在目录中）
TJA1050T/CM
✅ 直接替换联系询价
查看数据手册 →TJA1051T 规格参数
| Product Type | High-speed CAN transceiver |
| Bus Interface | Two-wire CAN bus |
| Signal Interface | Differential transmit and receive |
| Application | Automotive high-speed CAN systems |
| 封装 | 8-pin SOIC |
| 安装类型 | Surface mount |
| 生命周期状态 | Active |
| Backward Compatibility | Compatible with TJA1050 |
| TJA1051T/3 Controller Supply Compatibility | Down to 3 V |
| TJA1051T/E Off Mode | Very low-current Off mode supported by TJA1051T/E variant |
| TJA1051T/2Z Feature | Silent Mode |
| RoHS 状态 | unknown |
| REACH Status | unknown |
TJA1051T 引脚配置
| 引脚 1 | TXD — Transmit data input from the CAN controller |
| 引脚 2 | GND — Ground connection |
| 引脚 3 | VCC — Transceiver supply connection |
| 引脚 4 | RXD — Receive data output to the CAN controller |
| 引脚 5 | VIO — Logic-interface supply connection |
| 引脚 6 | CANL — CAN low bus connection |
| 引脚 7 | CANH — CAN high bus connection |
| 引脚 8 | GND — Ground connection |
典型应用
TJA1051T 适用于 6 应用s: Automotive High-Speed CAN Network, Vehicle Body Control Module, Industrial CAN Gateway, Motor Control and Diagnostics, Distributed Sensor Network, CAN Test and Measurement Equipment.
Automotive High-Speed CAN Network
The TJA1051T fits an automotive high-speed CAN node because it is specifically identified as a high-speed CAN transceiver for interfacing a CAN protocol controller with a physical two-wire CAN bus. Its differential transmit and receive capability supports robust communication across CANH and CANL conductors, while the 8-pin SOIC package simplifies assembly on conventional automotive electronics. The design must still verify timing, supply, bus-fault, ESD, and temperature limits in the NXP data sheet before qualification. Layout should keep the transceiver close to the bus connector, preserve the differential return path, and provide termination at appropriate bus locations.
推荐
Vehicle Body Control Module
A body control module can use the TJA1051T as the physical interface between its CAN controller and vehicle body-network wiring. The verified NXP data identifies automotive high-speed CAN use and differential CAN signaling, which are appropriate when one controller must exchange messages with remote door, lighting, or climate nodes. The SOIC-8 format supports conventional surface-mount placement and avoids a large specialized package. Because the supplied excerpts do not include maximum bus length, termination values, fault thresholds, or temperature limits, those requirements must come directly from the TJA1051 data sheet.
推荐
Industrial CAN Gateway
The TJA1051T can bridge a microcontroller-based gateway to a two-wire high-speed CAN bus when the controller lacks an integrated physical layer. Its differential transmitter and receiver are the defining functions of a CAN transceiver, allowing logic-level CAND and CANR connections to reach a physical CANH/CANL network. The 8-pin SOIC package is useful for industrial controller boards that already use standard small-outline footprints. Production selection still requires validation of the industrial temperature grade, supply tolerance, EMC behavior, bus protection, and isolation strategy; none of those ratings was present in the supplied excerpts.
推荐
Motor Control and Diagnostics
A motor-control node can place the TJA1051T between a CAN-capable microcontroller and a high-speed CAN network carrying motor commands and diagnostic information. The device converts between controller logic and the differential physical bus, while its documented backward compatibility with the TJA1050 supports design migration from established TJA1050-based nodes. Layout quality remains important because differential routing reduces susceptibility to common-mode disturbance while still requiring controlled return paths and correct termination. Verify maximum data rate, propagation timing, bus-fault behavior, and thermal limits against the manufacturer data sheet before choosing it for a safety-related diagnostic function.
推荐
Distributed Sensor Network
The TJA1051T can support a distributed sensor network in which a central controller communicates with remote sensing nodes over a shared two-wire CAN bus. Differential transmit and receive capability suits a multi-node wired network, and the compact 8-pin SOIC package leaves board area for sensing and conditioning circuitry. The exact bus topology, cable length, termination, and node count must be engineered around the manufacturer’s verified communication and fault specifications. For installations with large ground-potential differences, a galvanically isolated interface may be preferable, and no isolation is built into the TJA1051T according to the available material.
推荐
CAN Test and Measurement Equipment
The TJA1051T can serve as the bus-side interface in bench equipment or automated test systems that need to emulate, monitor, or diagnose high-speed CAN nodes. Its documented differential physical-layer interface allows a controller to connect to CANH and CANL while test software handles message generation and analysis. The 8-pin SOIC package supports compact instrumentation hardware, but accurate measurement results depend on confirming propagation delay, receiver thresholds, fault tolerance, and supply performance from the NXP data sheet. Probe grounding, bus termination, and isolation should be designed carefully to prevent test-equipment earth effects from distorting the bus.
推荐
推荐产品汇总
工程参考数据： TJA1051T ——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 | TJA1051T/3,118 | TJA1051T/2Z | TJA1042T/1J | TJA1042T/3,112 | TJA1050T |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Product Type | High-speed CAN transceiver | High-speed CAN transceiver | CAN transceiver | CAN transceiver | CAN transceiver | High-speed CAN transceiver |
| Bus Interface | Two-wire differential CAN bus | Two-wire differential CAN bus | Two-wire differential CAN bus | Two-wire differential CAN bus | Two-wire differential CAN bus | Two-wire differential CAN bus |
关键差异点
- Direct support for low-voltage CAN controllers in the /3 variant （对比 TJA1051T/3,118)
- Silent Mode is available for controlled low-current bus operation （对比 TJA1051T/2Z)
- Documented backward compatibility supports migration from TJA1050 designs （对比 TJA1050T)
设计说明
Place the TJA1051T adjacent to the CAN controller and route CANH and CANL as a tightly coupled differential pair. Keep the route over a continuous reference plane, minimize stubs and vias, and separate the bus traces from switching nodes and high-current paths. The supplied material does not provide the manufacturer’s recommended PCB geometry, so the final layout must follow the PCB guidelines and package drawing in the NXP data sheet.
Do not interchange the standard TJA1051T with TJA1051T/3, TJA1051T/2Z, or TJA1042 variants based only on the shared 8-pin SOIC outline. The verified differences include 3 V controller interfacing for /3, Silent Mode for /2Z, and distinct standby behavior for the TJA1042 options. Verify the complete ordering code, pin functions, supply requirements, mode-control truth table, timing, and fault behavior before substitution.
Provide clean, properly decoupled supply and ground connections to the transceiver, following the manufacturer’s recommended capacitor values and layout. The extracted source material does not specify the capacitance values, voltage tolerances, or startup behavior, so those details must be taken directly from the data sheet. Ensure the logic-side supply requirement of the selected suffix is compatible with the CAN controller before routing power to the board.
Use the correct two-wire termination scheme and place termination only at designated bus endpoints. Avoid unnecessary stubs, test points, and long unprotected branches, because they can degrade signal integrity and increase emissions. The TJA1051T provides differential CAN signaling, but transceiver selection alone does not ensure EMC compliance; validate the complete harness, filtering, grounding, and enclosure with the applicable automotive or industrial test requirements.
合规信息
The supplied excerpts identify automotive high-speed CAN use and active lifecycle status but do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Compliance must be verified for the exact ordering code and package suffix.