**LTC2875IDD#TRPBF: A High-Noise-Immunity 3V/5V RS485/RS422 Transceiver**

The **LTC2875IDD#TRPBF** from Analog Devices is a robust, feature-rich transceiver designed for high-speed bidirectional data communication in electrically noisy environments. Supporting both **RS-485 and RS-422 protocols**, this device operates from a single **3V to 5.5V supply**, making it highly versatile for a wide range of industrial, automotive, and instrumentation applications. Its key strength lies in its exceptional **noise immunity**, achieved through advanced design techniques that ensure reliable data transmission even in the presence of significant electromagnetic interference (EMI) and ground potential differences.

A standout feature of the LTC2875 is its **integrated protection circuitry**. It boasts **±60V overvoltage and fault protection** on the bus pins, safeguarding the transceiver and the wider system from damaging voltage transients that are common in industrial settings. Furthermore, the device is **immune to latch-up** and can withstand **ESD strikes up to ±25kV** (Human Body Model), significantly enhancing system durability and reducing field failures.

The transceiver supports full-duplex communication configurations and offers a flexible data rate of up to **20Mbps**. It includes a **current-limited driver and thermal shutdown** protection to prevent damage during short-circuit conditions or excessive power dissipation. The device is available in a compact **DFN package**, ideal for space-constrained PCB designs, and features a proprietary low-emission design to minimize radiated noise.

For system designers, the LTC2875 simplifies implementation with its **fail-safe receiver** circuitry, which guarantees a logic-high output when the bus inputs are open, shorted, or idle. This eliminates the need for external bias networks in many applications and ensures a known output state under fault conditions, improving overall system reliability.

**ICGOOODFIND**: The LTC2875IDD#TRPBF stands out as an **exceptionally robust and reliable solution** for serial communication networks. Its combination of high noise immunity, extensive integrated protection, and flexible supply voltage makes it an **ideal choice for demanding applications** where data integrity and system longevity are paramount.

**Keywords**:

RS-485/RS-422 Transceiver, High Noise Immunity, ±60V Overvoltage Protection, 3V/5V Operation, 20Mbps Data Rate