Robust ±60V RS485 Transceivers Fortify PROFIBUS-DP Networks

Thursday, June 2, 2016

Linear Technology Corporation introduces the LTC2876 and LTC2877, exceptionally rugged, high voltage tolerant RS485 transceivers targeted for PROFIBUS-DP (decentralized periphery) master and slave devices. As with any fieldbus, PROFIBUS-DP systems are prone to installation cross-wiring faults, ground voltage faults, or surge, which can cause catastrophic overvoltage conditions that exceed the absolute maximum ratings of typical transceivers. Whether transmitting, receiving, in standby or powered off, the LTC2876 and LTC2877 tolerate ±60V on their bus pins, eliminating common damage due to transmission line faults.

The LTC2876 and LTC2877 provide multiple levels of protection that make them suitable for a variety of PROFIBUS-DP applications, including discrete manufacturing and process automation. 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, which would otherwise cause data errors and possible device damage. Their incredibly high ESD protection guarantees 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 offered in commercial, industrial and automotive versions, supporting operating temperature ranges of 0°C to 70°C, -40°C to 85°C, and -40°C to 125°C, respectively. The LTC2876 is available in an RoHS compliant 8-pin 3mm x 3mm DFN or MSOP package, while the LTC2877 includes a logic supply and is available in an RoHS compliant 10-pin 3mm x 3mm DFN or MSOP package. 

Summary of Features: LTC2876 & LTC2877 

•    Protected from Overvoltage Line Faults to ±60V
•    ±52kV ESD Interface Pins, ±15kV on All Other Pins
•    Extended Common Mode Range: ±25V
•    1.65V to 5.5V Logic Supply Pin for Flexible Digital Interfacing (LTC2877)
•    5V Supply Can Operate Down to 3V for Low Power, Low Swing Applications
•    Wide Operating Temperature Range: -40°C to 125°C
•    Available in Small DFN & MSOP Packages

For further information, please contact Conrad Coetzee on:
(011) 923 9600 /


Issued By:    Seipati Tlhoaele
Arrow Altech Distribution    
Tel: 011 923 9604                         

Contact Us

Units J16 Centurion Business Park

Bosmansdam Road

Milnerton, 7441


Email Address:

Tel: (021) 555-1884 | Fax: (021) 555-1763

Suite AF. 2/3 Ensign Square 4 Sookay Place Derby Downs Office Park

University Road


Durban, 4001


Email Adress:

Tel: (031) 279-1660 | Fax: (031) 267-3798

53-57 Yaldwyn Road

Hughes Extension

Jet Park 1459


Email Address:

Tel: (011) 923-9600 | Fax: (011) 923-9884

Customer Feedback

We are waiting to hear from you.

If you have any feedback please don't 
hesitate to email

Or give us a call on: (011) 923-9600 
Telefax: (011) 923-9884

Quality Management

Arrow Electronics