Transceivers extend PROFIBUS range and capacity

The Exar SP1486E PROFIBUS transceiver extends data transmission range compared to standard RS-485 transceivers, with data rates up to 20Mbit/s and low differential-driver skew of 1ns.

In addition, 1/8th-load capability allows up to 256 transceivers on the communication bus without violating the PROFIBUS specification.

The new device is a 5V-powered, half-duplex differential line transceiver suitable for highspeed, bi-directional communication on multipoint buses. It is capable of driving a 2.7V differential output voltage into a 54Ω load, and also implements advanced failsafe protection that prevents the CMOS inputs from drifting to improper logic levels when the receiver inputs are floating, shorted or open.

The hot-swap capability allows live insertion and removal, which is required for use in line cards for industrial control systems. The device complies with TIA/EIA-485, TIA/EIA-422 and meets IEC61000-4-2 ESDprotection requirements. Driver short-circuit current limit and thermal-shutdown protection are also provided to protect against overload conditions.

 

FEATURES 300µA operating current 1µA shutdown mode ESD protection: ±15kV air gap ±8kV contact discharge

APPLICATIONS Advanced Fieldbus networks Security networks Robotic manufacturing plants Remote sensing Motion-control systems Metering equipment

 

 

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