WMSIC Electronic Components

RENESAS ISL81487IBZ-T ISL81487IBZ

ModelISL81487IBZ-T
PackageSOIC-8
BrandRENESAS
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Electronic Component

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RENESAS ISL81487IBZ-T
Type
RENESAS
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RENESAS
Electronic Component
ISL81487IBZ-T
Electronic Component
1
Package
SOIC-8
Type
Transceiver
Electronic Component
RS-485 / RS-422IC
Electronic Component
0.11g
Electronic Component
256
Electronic Component
1
Features
Tx / Rx
Electronic Component
BM0257437675
Operating Temperature
40℃~+85℃
Operating Voltage
4.5V~5.5V
Receiver
1
Data
5Mbps

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ISL81487IBZ-T 产品概述

一、产品简介

ISL81487IBZ-T 是瑞萨(Renesas)旗下的一款高可靠性半双工差分收发器,封装为 SOIC-8。器件集成1路驱动器和1路接收器,兼容 RS-422/RS-485 差分通信标准,工作电压范围为 4.5V 至 5.5V,适配传统 5V 总线系统,专为工业级多点差分通信设计。

二、主要规格亮点

  • 通信类型:半双工差分收发器(1驱动/1接收)
  • 数据速率:最高 5 Mbps,满足高带宽工业现场总线要求
  • 节点数:支持多点网络,最多可达 256 节点(需关注总线负载与节点单元负载)
  • 静态电流:典型静态功耗 420 μA,有利于降低系统待机能耗
  • 抗静电:ESD 抗扰度 ±7 kV(人体模式),适用于一般生产与装配环境
  • 工作温度:-40℃ 至 +85℃,满足工业级温度要求
  • 封装:SOIC-8,便于通过孔或贴片焊接在标准 PCB 上

三、典型应用场景

适用于需要可靠差分通信的工业与商用场合,包括但不限于:

  • 工厂自动化现场总线、多点控制与监测
  • 楼宇与安防系统的远距离数据传输
  • 电力与能源计量集中器间通信
  • 传感器汇聚、PLC 与驱动器之间的差分链路

四、设计与使用建议

  • 总线终端:采用 120 Ω 终端电阻并靠近线缆两端布局,以抑制反射;长链路或高频率时注意线缆特性阻抗匹配。
  • 偏置与故障安全:为空闲总线配置偏置网络(上拉/下拉电阻)确保空闲状态可预测,避免漂移导致误触发。
  • 方向控制:半双工模式需外部方向控制信号(DE/RE),建议使用集中管理或自动方向控制方案以优化时隙分配。
  • 电源与去耦:VCC 端附近放置 0.1 μF 陶瓷去耦电容,靠近器件引脚焊盘布置,减小电源杂散。
  • 抗扰措施:尽管器件具 ±7 kV ESD 能力,工业现场建议并联 TVS、共模扼流圈和差分保护元件以增强雷击与浪涌保护。
  • 节点扩展:宣称支持 256 节点时,请核查每节点对总线的等效负载(unit load);若采用传统 1 unit load 设备,需采用分线器或中继器扩展。

五、封装与可靠性

SOIC-8 封装利于自动化贴片与焊接,适配通用 PCB 尺寸与焊盘。器件的工业级工作温度范围与低静态电流特性使其在长期运行的现场设备中具备良好可靠性。针对苛刻环境,建议在系统级做额外的浪涌与过压保护设计。

总结:ISL81487IBZ-T 在保持低功耗的同时提供 5 Mbps 的差分传输能力与多点支持,适合工业现场的 RS-422/RS-485 半双工网络。合理的终端、偏置和保护设计可使其在各类复杂电磁环境下稳定运行。

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