Intersil ISL32704E低成本隔离RS－485收发器解决方案
Intersil公司的ISL32704E是电流隔离的差分总线收发器,总线的每端A和B ESD保护高达±15kV,设计用于平衡通信的双向数据传输,满足RS-485和RS-422标准,数据速率达4Mbps,电源电压3-5V,隔离层寿命达4400年,主要用在工厂自动化,安全网络,工业/过程控制网络,以及建筑环境控制系统,电平转换如RS-232到RS-485等.本文介绍了ISL32704E主要特性,应用框图和高速RS-485应用框图,以及评估板ISL32704EVAL1Z 主要特性,框图,电路图,材料清单和PCB设计图.
The ISL32704E is a galvanically isolated, differential bus transceiver designed for bidirectional data transmission and meeting the RS-485 and RS-422 standards for balanced communication. Each of the bus terminals, A and B, is protected against ±15kV ESD strikes without latch-up.
The device uses Giant Magnetoresistance (GMR) as isolation technology. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life.
The part is available in a 16 Ld QSOP package, offering unprecedented miniaturization.
The ISL32704E delivers a minimum differential output voltage of 1.5V into a 54Ω differential load for excellent data integrity over long cable lengths.
The device is compatible with 3V and 5V input supplies, allowing interface to standard microcontrollers without additional level shifting.
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