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TJA1029T,118 TJA1029T
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- NXP TJA1029T, 118
- Type
- NXP
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- TJA1029T,118
- Electronic Component
- 1
- Package
- SOIC-8
- Type
- Transceiver
- Electronic Component
- LIN Transceiver
- Electronic Component
- 0.193g
- Electronic Component
- 1
- Features
- Bus;;; TXD; Bus; Low Power
- Electronic Component
- BM0233539039
- Operating Temperature
- 40℃~+150℃
- Operating Voltage
- 5V~18V
- Receiver
- 1
- Driver
- 1
- Receiver
- 175mV
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
TJA1029T,118 产品概述
一、概述
TJA1029T,118 是恩智浦（NXP）面向车用 LIN 总线的单通道收发器（1 驱动器 / 1 接收器），封装为 SOIC‑8。器件工作电压范围宽（5V ～ 18V），接收器具有 175mV 的滞后，工作温度范围为 −40℃ ～ +150℃，适配车载电源与工业 12V/24V 系统的苛刻环境。产品定位为 LINbus 物理层接口，便于与 MCU 或车身控制单元配合实现低速串行网络通信。
二、主要技术参数
- 类型：收发器（1 驱动 / 1 接收）
- 总线兼容：LINbus（单线低速总线物理层）
- 工作电压：5 V ～ 18 V（适应车载电源波动）
- 接收器滞后（Hysteresis）：175 mV（提高噪声免疫）
- 工作温度：−40 ℃ ～ +150 ℃（高温等级，适合车规）
- 封装：SOIC‑8（易于 PCB 组装与替换）
- 品牌：NXP（恩智浦）
三、功能与优势
- 宽电压范围使器件可在发动机起动、负载突变等情形下可靠工作；
- 175mV 的接收滞后有助于抑制总线上的低幅干扰，提升接收稳定性；
- SOIC‑8 封装利于批量生产和维修替换；
- 车规级温度范围（−40℃ 至 +150℃）满足车内高温环境要求；
- 单通道结构适合点对点或节点较少的 LIN 网络应用，电路简单、成本低。
四、典型应用场景
- 车身电子（车门、座椅、镜像控制等）网络接口；
- 车内传感器与执行器的低速通信链路；
- 工业控制中对噪声抑制与宽电源容忍度有要求的单线总线应用；
- 需小体积、低成本 LIN 物理层解决方案的嵌入式系统。
五、PCB 设计与使用建议
- 在 VCC（或 VB）引脚附近放置 100 nF 陶瓷旁路电容，紧邻器件引脚焊盘以抑制高频噪声；
- 总线侧建议并联 TVS 或瞬态抑制措施，应对汽车瞬态尖峰与反向极性风险；
- 接收器滞后 175mV 有利于抗抖动，但仍需确保总线参考地良好和接地回路最短；
- LIN 总线上通常采用主控拉高偏置，器件旁的终端与拉高电阻需按系统规范配置；
- 高温应用下注意热散逸路径与周边元件布局，避免在器件上方放置大功率元件。
六、选型与注意事项
- 若系统需多通道收发器或更高级保护功能（如可编程休眠、短路限流、热关断），请核对器件的完整数据手册或考虑其他型号；
- 在车规认证和长期可靠性要求下，查阅恩智浦提供的 AEC‑Q100 等级与可靠性测试结果；
- 评估周边器件兼容性：MCU 接口电平、总线偏置策略以及系统供电瞬变能力。
七、结论
TJA1029T,118 为一款面向 LINbus 的车规级单通道收发器，具有宽电压、高温耐受及良好抗噪能力，适合车身控制和工业单线通信场合。正确的 PCB 布局、瞬态保护与总线偏置能够充分发挥其稳定性与可靠性。购买与设计前建议参考恩智浦完整数据手册以获取引脚定义、时序及电气限制的详细信息。
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