DS26C31TN – NATIONAL SEMICONDUCTOR

Overview

The Texas Instruments DS26C31TN is a robust quad differential line driver designed for RS-422 and RS-485 communication interfaces, offering superior noise immunity and extended transmission distances. Its primary function is to convert single-ended logic signals into differential pairs, enabling reliable data transfer in electrically noisy environments. A critical design consideration for this device is the trade-off between drive strength and power consumption; while its high output impedance minimizes loading effects, careful impedance matching of the transmission lines is paramount to prevent signal reflections and ensure signal integrity, especially at higher data rates.

Key Features

• Quad Differential Line Driver (4 Drivers/0 Receivers)
• RS-422 and RS-485 Protocol Support
• Wide Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature: -40°C to 85°C
• Through-Hole Mounting
• 16-PDIP (0.300″, 7.62mm) Package

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Long-haul serial data communication links
• Industrial automation and control systems
• Multipoint data distribution networks
• Robust communication in electrically harsh environments