WMSIC Electronic Components

RENESAS ISL3172EIBZ

ModelISL3172EIBZ
Package8-SOIC
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RENESAS ISL3172EIBZ
Type
RENESAS
Minimum package
98 管

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RENESAS
Electronic Component
ISL3172EIBZ
Electronic Component
1
Package
8-SOIC
Type
Transceiver
Electronic Component
RS-485 / RS-422IC
Electronic Component
0.191g
Electronic Component
256
Electronic Component
1
Electronic Component
BM0264520697
Operating Temperature
40℃~+85℃
Operating Voltage
3V~3.6V
Receiver
1
Data
250Kbps
Communication
Electronic Component

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

ISL3172EIBZ 产品概述

一、产品简介

ISL3172EIBZ 是 RENESAS(瑞萨)系列的半双工差分收发器,集成一个驱动器与一个接收器,兼容 RS‑422 与 RS‑485 差分总线规范。器件工作电压范围为 3.0V 至 3.6V,适用于 3.3V 系统电源环境,面向对通信可靠性与低功耗有要求的工业与嵌入式应用。器件采用 8‑引脚 SOIC 封装,体积小、易于 PCB 布局与批量生产组装。

二、主要特性

  • 半双工差分收发器:1 个驱动器 + 1 个接收器,支持单总线双向通信架构。
  • 通讯速率:典型支持至 250 kbps,满足常见工业现场总线与低速数据采集通信需求。
  • 多节点支持:设计允许在总线上连接最多 256 个节点,适合大规模分布式网络。
  • 电源范围:3.0V ~ 3.6V,兼容 3.3V MCU 与逻辑电平。
  • 低静态电流:静态电流约 510 μA,有利于降低待机功耗。
  • 抗静电能力:静电保护达到 ±15 kV,增强了器件在装配及现场使用时的鲁棒性。
  • 工作温度:工业级温度范围 −40 ℃ 至 +85 ℃,适应恶劣环境。
  • 封装:8‑SOIC,便于在面积受限的应用中布置。

三、功能说明

ISL3172EIBZ 在半双工模式下通过单对差分线实现发送与接收功能切换。驱动器在使能时将 TTL/CMOS 侧的逻辑信号转换为差分信号驱动总线,接收器在接收端将差分信号还原为单端逻辑输出。器件对 RS‑422/RS‑485 电平兼容,使其可以在多种差分总线标准下工作。适用于多点通信场合,通过协议管理与方向控制实现节点间可靠的数据交换。

四、电气参数与使用条件(基于给定参数)

  • 驱动器数 / 接收器数:1 / 1(单对半双工)
  • 工作电压:3.0 V ~ 3.6 V
  • 数据速率:最高约 250 kbps(典型工业速率)
  • 支持节点数:最多 256 个节点(总线规模设计参考)
  • 静态电流:约 510 μA(无通信时的静态耗电)
  • 静电保护:±15 kV(增强现场与装配可靠性)
  • 工作温度:−40 ℃ ~ +85 ℃
  • 通信模式:半双工(单对差分线收发切换)

注意:以上参数为器件关键性能概览,具体极限值与典型值应参考型号完整数据手册以获得准确的电气特性曲线与测试条件。

五、典型应用场景

  • 工业自动化总线(传感器节点、执行器控制)
  • 楼宇自控与安防系统的分布式通信节点
  • 低速数据采集与远程 I/O 模块
  • 电梯控制、交通信号控制等需要多个节点互联的工业场合
  • 需要 3.3V 供电、工业温度等级的嵌入式通信接口

六、设计建议与注意事项

  • 终端匹配:在总线两端建议使用合适阻值的差分终端电阻以抑制反射(典型 120 Ω,但需根据实际线缆特性调整)。
  • 偏置网络:为保证空闲总线的确定性电平,应在网络中设计偏置电阻(上拉/下拉)或主控节点提供偏置,避免总线浮空导致误触发。
  • 半双工方向控制:系统设计时需考虑驱动器使能/方向控制的时序与冲突避免,常见做法由主控 MCU 管脚控制 RE/DE,通信协议上确保转发/应答时序。
  • 布线与接地:差分信号线应采用成对走线、尽量靠近且短耦合距离,地回路应尽量最小化以降低共模干扰。
  • 环境与可靠性:设备在高静电或强电磁环境中使用时,仍建议在 PCB 入口处加装额外的浪涌/EMI 防护元件以提高系统整体可靠性。
  • 功耗优化:静态电流较低,但在休眠或长时间空闲场景中应结合系统电源管理策略进一步降低总体功耗。

七、总结

ISL3172EIBZ 是一款面向工业与嵌入式差分总线通信的半双工 1:1 收发器,特点为 3.3V 供电兼容、较低静态功耗、对多节点网络的支持以及工业级温度与抗静电能力。适合用在对可靠性与成本敏感的分布式通信节点中。欲获更详细的电气参数、引脚定义与应用电路图,请参阅 RENESAS 官方数据手册与应用说明,以确保在具体设计中满足全部规范与性能需求。

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