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RENESAS ISL81483IBZ-T ISL81483IBZ
Configuration
1 options
Configuration
22+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RENESAS ISL81483IBZ-T
- Type
- RENESAS
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- RENESAS
- Electronic Component
- ISL81483IBZ-T
- Electronic Component
- 1
- Package
- 8-SOIC
- Type
- Transceiver
- Electronic Component
- RS-485 / RS-422IC
- Electronic Component
- 0.001g
- Electronic Component
- 256
- Electronic Component
- 1
- Features
- Tx / Rx;;;; Low Power
- Electronic Component
- BM0264865100
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 4.5V~5.5V
- Receiver
- 1
- Data
- 250Kbps
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ISL81483IBZ-T 产品概述
一、产品简介
ISL81483IBZ-T 是瑞萨（RENESAS）推出的一款高可靠性半双工收发器，面向工业与嵌入式总线系统的 RS-422/RS-485 通信场合。器件集成了 1 路驱动器与 1 路接收器，支持多节点网络（最多可达 256 个节点），在 4.5V 至 5.5V 工作电压范围内稳定工作，工作温度范围为 -40℃ 到 +85℃，适合严酷环境与长期在线应用。
二、主要特性
- 半双工 RS-422/RS-485 通信，1 驱动器 / 1 接收器配置
- 数据速率最高达 250 kbps，满足工业现场常见速率需求
- 支持最多 256 个节点的多点网络拓扑
- 低静态电流：典型 120 μA（低功耗待机态），便于节能型系统设计
- 工作电压：4.5 V ~ 5.5 V，兼容常见 5V 系统
- 工作温度：-40℃ ~ +85℃，适合工业级应用
- 封装：8-SOIC，便于 PCB 布局与自动化贴装
三、功能亮点
- Tx/Rx 启用控制：独立的发送/接收使能引脚，方便主控对总线方向与收发时序进行精确控制
- 使能关断（Enable Shutdown）：器件可进入低功耗关断状态，降低系统待机能耗
- 热关断保护：内置热关断机制以保护器件免受过热损伤，提升可靠性
- 过流保护：在短路或负载异常时限制电流，防止器件及总线损坏
- 低功耗模式：在不活动或待机状态下，维持极低静态电流，延长系统寿命
四、典型应用场景
- 工业自动化现场总线（PLC、远程 I/O、现场控制器）
- 楼宇自控与电力监控系统（EMS、SCADA）
- 仪器仪表与数据采集系统
- 需长线传输与多节点联网的嵌入式系统
五、系统级设计建议
- 终端匹配：建议在总线两端采用合适阻值的差分终端电阻以抑制信号反射，具体阻值按照系统特性选定（常用 120 Ω）。
- 总线保护：在现场应用建议配合 TVS、浪涌抑制器与共模电感，以提高抗扰度与雷击/浪涌保护能力。
- 布局与接地：差分对走线尽量靠近并等长，避免大面积电流回路穿过敏感信号区，接地应单点接入以减少环路噪声。
- 过流与热管理：尽管器件具备过流与热关断保护，仍需在 PCB 设计时预留散热路径并避免长期在热边界运行。
- 时序控制：利用独立的 Tx/Rx 启用引脚实现发送完成后的延迟释放（turnaround）以避免总线冲突，半双工系统需谨慎设计仲裁与重传机制。
六、封装与订购信息
- 器件型号：ISL81483IBZ-T
- 品牌：RENESAS（瑞萨）
- 封装：8-SOIC，适配常规 8 脚工业封装焊盘与自动化贴装工艺
- 建议在 BOM 与机械布局阶段确认封装方向与焊盘尺寸，便于后续生产与检修
七、总结
ISL81483IBZ-T 以低功耗、高保护性的半双工收发能力，结合工业级温度与多节点支持，是面向工业现场、楼宇控制及多节点嵌入式通信系统的合适选择。器件提供完善的保护与低功耗选项，减少外部保护器件数量，同时通过合理的 PCB 与系统设计，可在复杂电磁环境中实现稳定可靠的数据传输。若用于关键系统，请参考厂商完整数据手册以确认时序、绝对最大额定值及详细电气特性。
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