High-speed RS-485 transceivers feature reinforced isolation to 2.5kV
The ISL32741E offers 1,000VRMS working voltage and 6kV of reinforced isolation, more than twice that of competitive solutions, claims Intersil. The ISL32740E with 2.5kV of isolation and 600VRMS working voltage comes in the industry’s smallest package, enabling high channel density for programmable logic controllers (PLCs) in factory automation applications.
The ISL3274xE transceivers provide additional advantages over other isolation technologies, including ultra-low radiated emission and EMI susceptibility, support for up to 160 devices on the bus, and an extended 125°C temperature range. These devices leverage giant magnetoresistance (GMR) technology that provides galvanic isolation to keep the communication bus free from common-mode noise generated in electrically noisy factory and building automation environments. In addition to not requiring any shielding, these transceivers simplify PCB layout, use less board space, and enhance data transmission reliability and integrity. The ISL3274xE devices also offer low power consumption. For example, the ISL32740EIAZ’s 60mA supply current allows it to operate in a tiny 4mm x 5mm QSOP package at maximum speed without overheating.
On the non-isolated control-side, the ISL3274xE transceivers support direct connection to a 3V microcontroller while the isolated bus-side connects to a higher voltage 5V supply for communication of strong bus signals across 100 meters and longer distances.
Intersil – www.intersil.com
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