WMSIC Electronic Components

TJA1042BT/0Z TJA1042BT

ModelTJA1042BT/0Z
PackageSO-8
BrandNXP
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

14 specifications

Core information

Product name
NXP TJA1042BT / 0Z
Type
NXP
Minimum package
2500 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
TJA1042BT/0Z
Electronic Component
1
Package
SO-8
Electronic Component
Other Interface
Electronic Component
0.186g
Electronic Component
1
Electronic Component
BM0230595638
Electronic Component
Electronic Component
Electronic Component
2500

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

TJA1042BT/0Z 产品概述

一、产品简介

TJA1042BT/0Z 是恩智浦(NXP)推出的一款高可靠性的 CAN 总线收发器,面向汽车与工业通信应用。器件支持高达 5 Mbps 的传输速率,工作电源范围为 4.5 V 至 5.5 V,封装为常见的 SO-8(SOIC-8)。该器件兼容 ISO 11898-2 物理层规范,适合在噪声与电磁环境较差的系统中稳定工作。

二、主要功能与特性

  • 故障安全(Fault-tolerant):总线两线(CANH、CANL)在短路、断线或差分失衡情况下仍能维持安全状态,保护总线和收发器本体。
  • 唤醒功能(Wake-up):支持总线活动或外部唤醒信号唤醒器件,实现低功耗待机与快速恢复通信。
  • 高速传输:最高可达 5 Mbps,满足车载高速数据交换需求。
  • 保护机制:包含短路保护、过温关断与恢复、ESD 抗扰度以及对电源瞬变的容忍。
  • 低功耗模式:待机或睡眠模式下显著降低静态功耗,便于整车低功耗管理。
  • 故障安全输出:在器件受损或异常时,RXD/TXD 等接口能输出定义的安全电平,避免误触发上层控制器。

三、引脚与封装

器件采用 SO-8(SOIC-8)封装,便于在常规 PCB 工艺中使用。常用引脚包括:

  • VCC、GND:电源与地。
  • TXD、RXD:微控制器侧的发送/接收接口。
  • CANH、CANL:差分总线接口。
  • 唤醒/待机引脚(STB/WAKE):用于外部唤醒或进入低功耗模式。
    (具体引脚排列请参考官方数据手册以确保连线与配置正确。)

四、典型应用场景

  • 汽车车身电子(车灯、车门、座椅控制等)
  • 动力与底盘通信网络(ECU 间高速数据交换)
  • 商用车总线系统、公共交通与工程机械
  • 工业自动化与楼宇控制系统中的 CAN 网络节点

五、设计与使用建议

  • 电源旁路:在 VCC 与 GND 之间放置 0.1 μF 陶瓷以及 1–10 μF 的电解/钽电容,靠近器件封装放置以抑制瞬态。
  • 总线阻抗匹配:终端阻抗通常为 120 Ω 双端终端电阻,保证差分信号完整性。
  • 布局注意:将 CANH/CANL 差分线对成对布线,避免穿过噪声源,尽量短且成对对称。
  • 保护组件:在高干扰环境下可并联共模电感、TVS 二极管等以提高抗扰度。
  • 唤醒策略:合理配置唤醒/待机引脚并处理唤醒去抖,避免误唤醒导致额外功耗。
  • 热管理:在高负载或受限空间中注意散热与热回流,参考器件热阻与功耗等级。

六、优势与选型参考

TJA1042BT/0Z 以其汽车级的鲁棒性、完整的保护功能和成熟的厂商支持,常作为车载与工业 CAN 节点的首选收发器。选型时可关注工作温度范围、封装形式与唤醒/待机控制方式;如需更高电压容忍或更低功耗,可参考 NXP 系列中其它有针对性的变体或同类厂商产品。

欲获得管脚定义、典型特性曲线与详细电气参数,请以 NXP 官方数据手册为准,以便在具体设计中完成精确校核。

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