WMSIC Electronic Components

TJA1145AT/0Z TJA1145AT

ModelTJA1145AT/0Z
Package14-SOIC
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 24+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
NXP TJA1145AT / 0Z
Type
NXP
Unit
Electronic Component
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
TJA1145AT/0Z
Electronic Component
1
Package
14-SOIC
Type
CAN Transceiver
Electronic Component
CAN Transceiver
Electronic Component
0.176g
Electronic Component
1
Electronic Component
BM0263476670
Operating Temperature
40℃~+150℃
Operating Voltage
4.5V~5.5V
Data
5Mbps
Static Current
4.7uA
Electronic Component
Electronic Component

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

TJA1145AT/0Z 汽车级CAN收发器产品概述

一、产品定位与核心功能

TJA1145AT/0Z是恩智浦(NXP)推出的汽车级全双工CAN收发器,属于1/1通道物理层器件,专为汽车电子及工业恶劣环境下的高速数据通信设计。其核心功能是实现MCU(微控制器)逻辑电平与CAN总线差分信号的双向转换:

  • 发送端:将MCU输出的TXD逻辑电平转换为CAN_H/CAN_L差分信号,驱动总线传输;
  • 接收端:将总线差分信号还原为RXD逻辑电平,供MCU读取;
    支持CAN 2.0A/B协议及CAN FD(灵活数据速率)协议,满足汽车系统中对高速、可靠数据传输的需求。

二、关键性能参数

该产品经汽车级可靠性验证,核心参数如下:

  1. 数据速率:最高支持5Mbps(CAN FD模式),兼容传统CAN 2.0的低速(125kbps)、高速(1Mbps)模式,覆盖汽车电子多场景通信需求;
  2. 工作电压:4.5V~5.5V,适配汽车12V系统的电压波动(如冷启动压降、负载突变),无需额外复杂稳压设计;
  3. 工作温度范围:-40℃~+150℃,符合AEC-Q100 Grade 0标准,可稳定工作于发动机舱、底盘等极端温度环境;
  4. 封装:14-SOIC(0.154英寸/3.90mm宽度),表面贴装封装兼容标准PCB工艺,便于空间受限的汽车ECU集成;
  5. 功耗特性:正常工作电流<10mA,待机模式(STB引脚控制)电流仅微安级,满足汽车长时间停放的低功耗要求;
  6. 抗干扰能力:内置EMI抑制电路,符合ISO 11898-2电磁兼容性要求,可抵御汽车系统中的电磁噪声。

三、封装与引脚功能

TJA1145AT/0Z采用14引脚SOIC封装,关键引脚功能如下(典型配置):

引脚 功能描述 VCC 电源输入(4.5V~5.5V) GND 接地引脚 TXD 发送数据输入(MCU逻辑电平) RXD 接收数据输出(逻辑电平,供MCU读取) CAN_H/CAN_L CAN总线差分信号引脚(需接120Ω终端电阻) STB 待机控制(低电平进入待机,高电平正常工作) WAKE 唤醒输入(总线活动或外部信号可唤醒,退出待机) NC 空引脚(无连接)

封装尺寸紧凑,适合汽车电子中高密度PCB设计。

四、应用场景与核心优势

4.1 主要应用场景

  • 汽车电子:动力总成(发动机/变速箱控制)、车身控制模块(BCM)、底盘系统(ABS/ESC)、仪表、车载信息娱乐系统;
  • 工业控制:高温环境下的工业自动化(电机驱动、传感器节点)、轨道交通控制系统。

4.2 核心优势

  1. 汽车级可靠性:通过AEC-Q100 Grade 0认证,可承受振动、温度冲击及电压波动,满足汽车行业严苛的可靠性要求;
  2. 高速通信:5Mbps CAN FD速率支持大数据量传输(如摄像头数据、诊断信息);
  3. 低功耗设计:待机模式电流极低,适合汽车停放时的休眠需求;
  4. 抗干扰强:差分驱动/接收电路抑制总线噪声,确保数据准确性;
  5. 兼容性广:兼容主流MCU(如NXP S32K、英飞凌AURIX),无缝集成现有系统。

五、标准符合性与认证

该产品符合多项国际及行业标准:

  • 协议标准:ISO 11898-2(CAN物理层)、CAN 2.0A/B、CAN FD;
  • 可靠性标准:AEC-Q100 Grade 0;
  • 电磁兼容:符合CISPR 25汽车EMC标准,可通过整车电磁兼容测试。

六、典型系统集成示例

以汽车动力总成ECU为例,集成方式如下:

  1. MCU连接:TXD/RXD接MCU CAN控制器(如S32K144 CAN模块);
  2. 总线连接:CAN_H/CAN_L通过120Ω电阻接CAN总线(两端各接一个电阻);
  3. 控制逻辑:STB接MCU GPIO(待机控制),WAKE接总线唤醒电路;
  4. 接地设计:GND采用低阻抗接地,减少噪声干扰。

该方案实现ECU与其他节点(如变速箱ECU、ABS ECU)的高速可靠通信,满足实时控制需求。

总结:TJA1145AT/0Z凭借高可靠性、宽温范围、高速率及低功耗优势,成为汽车电子及工业恶劣环境下CAN通信的理想选择,可有效提升系统通信稳定性与效率。

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