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ADI/LINEAR DS2484R+T DS2484R
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR DS2484R+T
- Type
- ADI/LINEAR
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- DS2484R+T
- Electronic Component
- 1
- Package
- SOT-23-6
- Electronic Component
- Other Interface
- Electronic Component
- 0.043g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0258757131
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 1.71V~5.25V
- Operating Current
- 300uA
- Interface Type
- I2C
- Static Current
- 4uA
- 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.
DS2484R+T 产品概述
一、概述
DS2484R+T 是 ADI/LINEAR 推出的单通道 1-Wire 主控器，封装为 SOT-23-6（R+T 表示卷带包装，适合贴片生产）。器件通过 I2C 总线与主控器（MCU）通信，负责对外提供标准 1-Wire 总线的时序与驱动，简化主控端对 1-Wire 设备（如温度传感器、iButton、识别 EEPROM 等）的管理。工作电压宽广，适配从 1.71V 到 5.25V 的系统，工作温度范围为 -40℃ 至 +85℃，典型工作电流约 300µA，适合低功耗应用。
二、主要参数
- 接口类型：I2C（上层 MCU 与之通讯）
- 1-Wire 通道：单通道主控
- 工作电压：1.71V ~ 5.25V（兼容多种逻辑电平）
- 工作温度：-40℃ ~ +85℃
- 工作电流：约 300µA（典型）
- 封装：SOT-23-6（表面贴装，R+T 卷带供货）
三、功能亮点
- 将 1-Wire 时序与低级协议处理从 MCU 中卸载，降低固件复杂度与时序约束；
- 可靠的 1-Wire 驱动能力，便于连接多节点网络或较长总线线缆；
- 宽电压工作，使其可便捷用于单电池、USB 或工业电源系统；
- 小尺寸封装，便于空间受限的终端设备使用；
- 低静态电流，利于电池供电和能耗敏感的应用场景。
四、典型应用
- 温度监测与采集（DS18B20 等 1-Wire 温度传感器集成场景）
- 身份认证与资产管理（iButton/1-Wire ID 设备）
- 配置存储与参数维护（1-Wire EEPROM）
- 工业与楼宇自动化中的分布式传感器节点
- 数据记录仪、智能表计、物联网终端等对低功耗和体积有要求的产品
五、系统设计要点
- 电源与去耦：靠近 VCC 引脚放置 0.1µF 去耦电容，确保 1-Wire 突发负载时电源稳定；
- 1-Wire 拉电阻：根据线长与节点数量选择合适上拉电阻，长线或多节点可考虑更小阻值或主动拉高；
- 寄生供电设备：如网络中存在寄生供电设备，需确认器件是否支持强拉高及供电时间窗口，或采用独立供电方案；
- I2C 总线兼容性：确认主控器支持相应电平与速率，必要时加入 I2C 上拉电阻与总线保护措施；
- PCB 布线：1-Wire 总线应避免和大电流或强干扰信号平行，减少干扰和通信错误。
六、采购与封装提示
DS2484R+T 为 SOT-23-6 小体积封装，R+T 表示卷带包装，适合自动贴装。量产时请留意封装方向与丝印，结合生产工艺选择合适的回流焊温度曲线并参照厂家推荐的 PCB 焊盘布局。
总体而言，DS2484R+T 适用于需要稳定 1-Wire 网关功能、节省 MCU 设计复杂度并兼顾低功耗与小尺寸的产品方案。具体寄存器、命令集与功能细节建议参照 ADI 官方资料和参考设计验证。
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