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Isolated PROFIBUS

NVE offers a unique PROFIBUS-compliant isolated RS-485 transceiver, the IL3685.
Extraordinary specifications include a 40 Mbps maximum data rate, up to 50 node
fanout, and a 15 kV ESD rating for the bus nodes. The part provides transceiver
and isolation functions in a single 0.3"-wide 16-pin SOIC package.
An illustrative PROFIBUS circuit is:
The 220 ohm termination resistor, along with another 220 ohm resistor and the
other end of the bus, matches the bus impedance to minimize reflections. The 390
ohm "fail-safe" resistors guarantee a known state with no active transceivers.
Bypass capacitors should be placed as close as possible to the appropriate IC.
Isolated
PROFIBUS Demonstration
PROFIBUS Evaluation Boards
IL3685
product details
IL3685
data sheet
Recommended application bulletins:
(N.
America Only) |
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