WMSIC Electronic Components

TJA1021TK/20/C,118 TJA1021TK

ModelTJA1021TK/20/C,118
PackageQFN-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 Electronic Component

Available for RFQ

Technical data

Product details

15 specifications

Core information

Product name
NXP TJA1021TK / 20 / C, 118
Type
NXP
Minimum package
6000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
TJA1021TK/20/C,118
Electronic Component
1
Package
QFN-8
Electronic Component
Ethernet Transceiver
Electronic Component
0.31g
Electronic Component
1
Features
Low Power; positions
Electronic Component
BM0265653327
Electronic Component
Electronic Component
Electronic Component
6000

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

TJA1021TK/20/C,118 产品概述

一、产品简介

TJA1021TK/20/C,118 是恩智浦(NXP)面向车用 LINbus 的单通道收发器,封装为 QFN-8(HVSON 3x3),表面贴装(SMT)类型。该器件为完全版收发器(1 驱动器 / 1 接收器),适配车载总线物理层需求,工作电压范围宽(5.5 V 至 27 V),针对车用环境做了稳健设计。

二、主要参数

  • 供电电压:5.5 V ~ 27 V(支持汽车电池及瞬态情况)
  • 通信协议:LINbus(符合 LIN 物理层规范)
  • 驱动器/接收器:1/1
  • 接收器滞后:175 mV(接收器阈值稳定性指标)
  • 安装形式:表面贴装(SMT),封装 QFN-8 / HVSON(3×3 mm)
  • 类型:收发器(Transceiver)

三、功能与特性

TJA1021 系列定位为车用单线通信的物理层收发器,典型特性包括总线故障耐受、短路保护、过压/欠压容忍、反向电池与浪涌抑制、总线唤醒功能以及良好的电磁兼容性。接收器具有约 175 mV 的滞后以提高噪声抑制能力,适合车载噪声环境。器件支持常见 LIN 节点用例,如主从节点通信、车身控制网络等。

四、封装与引脚要点

QFN-8(HVSON 3×3)小体积利于高密度 PCB 布局,适合受限空间的 ECU、传感器与执行器模块。封装为表面贴装,可配合标准回流焊工艺。引脚安排通常包含 Vbat、GND、TX、RX 与 BUS(LIN)等关键引脚,具体引脚定义应参照恩智浦官方资料及器件数据手册进行设计与验证。

五、典型应用场景

  • 车身电子(门控、座椅、窗升降)
  • 传感器节点与执行器控制(温度、压力、阀门)
  • 仪表与信息娱乐子系统中的从节点通信
  • 网关与诊断接口中作为 LIN 物理层桥接器

六、设计与使用建议

  • 电源与总线去耦:在 Vbat 与 GND 之间放置合适的旁路电容,靠近器件引脚布置,以抑制瞬态干扰。
  • 总线终端/偏置:根据具体网络拓扑选择外部拉高/下拉或利用器件内部偏置功能,并保持 LIN 总线阻抗匹配。
  • 散热与布局:QFN-8 虽小,但在高温环境需注意热管理,使用热铺铜和短回流路径降低结温。
  • 保护与测试:在设计阶段进行 ESD、瞬态抑制与短路测试,确保器件在车规工作边界内稳定运行。
  • 参考数据手册:关键参数(如时序、电流消耗、保护限值)请以恩智浦数据手册为准,并遵循车规级设计规范。

七、可靠性与合规

TJA1021 系列作为车用收发器,设计针对车载电磁兼容、瞬态浪涌与长期稳定性进行优化。具体的 AEC-Q100 等级、温度范围与认证信息请参见官方文件,以满足车辆整车与电子控制单元(ECU)的可靠性要求。

总结:TJA1021TK/20/C,118 为一款功能全面、耐受性强的单通道 LIN 收发器,适用于多种车载通信节点。实际设计应结合官方数据手册与整车电气规范进行验证与调优。

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