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TJA1044BT/0Z TJA1044BT
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
14
specifications
Core information
- Product name
- NXP TJA1044BT / 0Z
- Type
- NXP
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- TJA1044BT/0Z
- Electronic Component
- 1
- Package
- SO-8
- Electronic Component
- Other Interface
- Electronic Component
- 0.186g
- Electronic Component
- 1
- Electronic Component
- BM0262713932
- 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.
TJA1044BT/0Z 产品概述
一、概述
TJA1044BT/0Z 是恩智浦（NXP）推出的一款高性能 CAN 收发器，面向车载与工业网络节点。器件支持最高 5 Mbps 的高速 CAN 总线通信，工作于单一电源 4.5 V 至 5.5 V 范围内，采用 SO-8（SOIC-8）封装，适合空间受限的控制单元、网关与节点设计。器件集成故障安全和唤醒功能，便于实现低功耗待机与可靠的总线连通性。
二、主要特性
- 支持高速 CAN（兼容 ISO 11898-2）最高数据率 5 Mbps。
- 单电源工作，电源范围 4.5 V–5.5 V，便于与标准车载 5 V 总线兼容。
- 故障安全（Fail-safe）设计：提供总线短路、开路及接地/电源短路的保护策略，提高节点容错能力。
- 唤醒功能（Wake-up）：支持低功耗待机模式并能通过总线活动或唤醒引脚唤醒，降低整车静态功耗。
- 封装：SO-8（SOIC-8）标准封装，利于批量生产与过回流焊接工艺。
三、引脚与功能概要
典型引脚包括 VCC、GND、CAN_H、CAN_L、TXD、RXD 及唤醒/待机控制引脚（STB 等）。TXD 为主机输入，RXD 为收发器向主机输出，唤醒/待机引脚用于进入/退出低功耗模式。具体引脚定义与时序请参考官方数据手册。
四、典型应用
- 汽车电子：车身控制模块（BCM）、车门模块、照明控制、车载网关等。
- 工业网络：机器控制器、传感器节点与现场总线接口。
- 通用嵌入式系统：需要长线 CAN 通信且要求低功耗与高可靠性的场合。
五、设计与布局建议
- 总线两端各使用 120 Ω 终端电阻，并考虑在近端放置 TVS 防浪涌二极管及共模电感以抑制干扰与瞬变。
- 在 VCC 引脚附近放置低 ESR 去耦电容，减少供电噪声影响。
- 总线线长与走线应尽量对称、靠近地层布线，减小共模干扰。
- 在系统设计阶段验证唤醒源（总线活动、外部中断等）与功耗行为，确保待机功耗满足整车要求。
六、可靠性与合规
TJA1044 系列针对车载环境进行了增强设计，包含热关断、短路保护与电磁兼容（EMC）考虑。用于量产前建议参考 NXP 官方数据手册和汽车级测试规范（如 AEC-Q100 等）进行完整验证与测试。
若需详细电气特性、时序图及典型应用电路，请参阅 NXP 官方数据手册或提供具体设计需求，我可以帮助进一步解读与优化方案。
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