±60V Rugged PROFIBUS RS485 Transceivers

The LTC2876 and LTC2877 are PROFIBUS RS485 transceivers designed to meet the test specifications for PROFIBUS-DP masters and PROFIBUS-DP slaves, fully compatible with IEC 61158-2, type 3: medium attachment unit (MAU). With operation up to 20Mbps, the LTC2876/LTC2877 supports all PROFIBUS data rates up to 12Mbps.

The LTC2876 and LTC2877 are exceptionally robust, tolerating ±60V faults on the bus pins and protected to ±52kV ESD. These devices are suitable for harsh environments or where 24V power might be inadvertently connected. Extended ±25V input common mode range and full failsafe operation improve data communication reliability in noisy systems.

The LTC2876 and LTC2877 meet PROFIBUS and RS485 specifications with a supply voltage of 4.5V to 5.5V but can operate down to 3V with reduced supply current.

Product Selection Guide

PART NUMBER

LOGIC SUPPLY PIN

PACKAGE

LTC2876

NO

DFN-8, MSOP-8

LTC2877

YES

DFN-10, MSOP-10

Applications

* PROFIBUS-DP

* Industrial Communication Networks

* RS485 and RS422 Systems

* 3V Low Voltage Differential Signaling

* PROFIBUS IEC 61158-2 Compliant

* Protected from Overvoltage Line Faults to ±60V

* ±52kV ESD Interface Pins, ±15kV All Other Pins

* ±2kV (Level 4) IEC61000-4-4 Fast Transient Burst

* ±25V Working Common Mode Range

* 20Mbps Maximum Baud Rate

* 1.65V to 5.5V Logic Supply Pin for Flexible Digital Interfacing (LTC2877)