The LTC2876 and LTC2877 provide multiple levels of protection that make them suitable for a variety of PROFIBUS-DP applications. An extended ±25V input common-mode range and full failsafe operation improve data communications reliability in electrically noisy environments and in the presence of ground loop voltages.
High ESD protection is said to guarantee that the LTC2876 and LTC2877 can withstand ±52kV HBM on the transceiver pins without latchup or damage; all other pins are protected to ±15kV HBM. Fully symmetric receiver thresholds ensure the devices maintain good duty cycle symmetry at low signal levels and boost receiver noise immunity, while supporting full failsafe operation. Both devices are tested with PROFIBUS IEC 61158-2 and TIA/EIA-485-A (RS485) loads to ensure compatability with both standards.
The LTC2876 and LTC2877 are available in commercial, industrial and automotive versions, supporting operating temperature ranges of 0 to 70°C, -40 to 85°C and -40 to 125°C, respectively. The LTC2876 is available in an 8pin 3 x 3mm DFN or MSOP, while the LTC2877 includes a logic supply and is available in a 10pin 3 x 3mm DFN or MSOP.
