RS-485 transceivers for industrial control systems
15 November 2017
Telecoms, Datacoms, Wireless, IoT
According to Maxim Integrated Products, its new MAX22500E, MAX22501E and MAX22502E RS-485 transceivers allow industrial designers to achieve 2x faster data rates and extend cable length by up to 50%.
With motion control systems requiring more accuracy over longer distances, system designers are challenged to maintain faster data rates and achieve robust communications with longer cables. A production site, for example, may not efficiently function with a slow data rate and short cables as it must transfer accurate information quickly and over a long distance.
The MAX22500E/MAX22501E (half-duplex) and MAX22502E (full-duplex) ESD-protected RS-485/RS-422 transceivers extend the reach of communication up to 100 Mbps over 50 metres. The settable pre-emphasis feature within the MAX22500E and MAX22502E enables 2x faster data rates compared to competitive solutions for increased encoder resolution and reduced latency. Pre-emphasis extends cables up to 50% longer to communicate over longer distances.
A large receiver hysteresis (250 mV) provides superior robustness to EFT. In addition, by improving the signal integrity and robustness, system designers can achieve the same level of performance with lower-cost cables. The transceivers operate over the -40°C to +125°C temperature range.
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