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MAXLINEAR SP3483EN-L/TR SP3483EN
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- MAXLINEAR SP3483EN-L / TR
- Type
- MAXLINEAR
- Unit
- Electronic Component
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- MAXLINEAR
- Electronic Component
- SP3483EN-L/TR
- Electronic Component
- 1
- Package
- SOP-8
- Type
- Transceiver
- Electronic Component
- RS-485 / RS-422IC
- Electronic Component
- 0.202g
- Electronic Component
- 32
- Electronic Component
- 1
- Features
- Tx / Rx;;; Low Power
- Electronic Component
- BM0227272499
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 3V~3.6V
- Receiver
- 1
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SP3483EN-L/TR 产品概述
一、概述
SP3483EN-L/TR 是迈凌（MAXLINEAR）推出的一款半双工收发器（IC TRANSCEIVER HALF 1/1），封装为 SOP-8。器件集成 1 路驱动器和 1 路接收器，工作电压范围为 3.0V 至 3.6V，典型静态工作电流为 1mA，支持最高 250kbps 的数据速率，节点数可达 32。器件具有 ±2kV 的静电保护能力，工作温度范围为 -40℃ 至 +85℃，适合工业和嵌入式系统中对可靠性和低功耗有要求的串行总线应用。
二、主要特性
- 单驱动/单接收、半双工通讯模式，适合 RS-485/RS-422 风格的差分总线。
- 宽工作电压：3.0V ~ 3.6V，便于与 3.3V 系统兼容。
- 数据速率：最高支持 250kbps，满足大多数监控与控制类应用需求。
- 总线节点支持：最多 32 个节点并联。
- 低静态电流：约 1mA，有利于节能型系统设计。
- 工业级温度范围：-40℃ ~ +85℃。
- ESD 抗扰度：±2kV，增强现场可靠性。
- 封装：SOP-8，便于手动焊接与自动贴装。
三、典型应用场景
- 工业自动化现场总线与数据采集（PLC、远程 I/O）。
- 楼宇自控与照明控制网络。
- 电力与水务计量表（智能表抄收系统）。
- POS 终端、门禁与安防设备的串行通信。
- 低速差分通信链路与多节点共享总线系统。
四、设计与使用建议
- 电源旁路：在 VCC 近端放置 0.1µF 陶瓷电容与 1µF 或 10µF 旁路电容，以抑制瞬态噪声。
- 总线终端：对于长线或高干扰环境，在总线两端采用适当阻值（常见 120Ω）终端电阻，防止反射。
- 空闲偏置：为保证总线空闲时的确定电平，采用上拉/下拉偏置电阻实现 failsafe 功能，避免浮空导致毛刺。
- 方向控制：半双工收发器通常需要方向控制引脚，请在电路中预留并合理设计驱动时序，避免总线冲突。
- PCB 布局：差分对走线应成对、等长并尽量靠近，避免穿过大面积切换区域以减少 EMI。
- ESD 防护：虽然器件具 ±2kV ESD 能力，接口仍建议配合浪涌抑制器件（TVS）以增强现场鲁棒性。
五、封装与热管理
SOP-8 封装小巧，适合空间受限的 PCB 布局。常规功耗下无需额外散热器，但在高负载或密集布局环境中，应保证良好散热通道与尽量减少热源堆叠。
六、总结
SP3483EN-L/TR 凭借低功耗、工业温度范围、可靠的静电保护与兼容 3.3V 系统的特性，是面向多节点差分总线（如 RS‑485/RS‑422 风格）应用的实用型半双工收发器。设计时关注电源去耦、总线终端与方向控制时序，可确保稳定可靠的现场通信性能。若需更高数据速率或更强抗静电能力，可根据系统需求选配其他型号。
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