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The AM26LS31CDR is a quad differential line driver from Texas Instruments, specifically designed for balanced digital data transmission in compliance with RS-422 and RS-485 standards. As part of the classic AM26LS31 series and utilizing Low-Power Schottky (LS) technology, it provides high noise immunity and reliable signal integrity over extended cable distances. It converts single-ended TTL or CMOS level signals into balanced differential outputs, significantly enhancing immunity to common-mode noise, making it an ideal choice for industrial communications, networking equipment, and long-distance data transmission applications.
Category:Integrated Circuits (ICs);Interface;Drivers, Receivers, Transceivers
Manufacturer:Texas Instruments
Packaging:Tape & Reel (TR);Cut Tape (CT)
Part Status:Active
Type:Driver
Protocol:RS422, RS485
Number of Drivers/Receivers:4/0
Voltage - Supply:4.75V ~ 5.25V
Operating Temperature:0°C ~ 70°C
Mounting Type:Surface Mount
Package / Case:16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:16-SOIC
Base Product Number:AM26LS31
Compliant with RS-422/RS-485 Standards: Designed for balanced multipoint bus transmission, supporting long-distance, high-speed data communication.
High Output Drive Capability: Provides strong differential output current, capable of driving transmission lines like twisted pairs and supporting multiple receiver units.
Excellent Noise Immunity: Differential signaling offers high common-mode noise rejection, suitable for electrically noisy environments.
Three-State Output Control: All four drivers feature three-state (high, low, high-impedance) outputs, facilitating bus sharing and multipoint applications.
Low-Power Design: Employhighs Low-Power Schottky process, reducing power consumption while maintaining high performance.
Thermal Shutdown Protection: Built-in thermal protection circuit prevents device damage under fault conditions.
Wide Compatibility: Inputs are compatible with both TTL and CMOS logic levels, enabling easy interfacing with various logic devices.
Industrial Automation & Process Control: Used in communication links between PLCs, DCS, sensor networks, and motor drives.
Building Automation Systems: Transmits control signals in HVAC, lighting control, and security systems.
Telecommunications & Networking Equipment: Used for board-to-board or rack-to-rack communication within routers, switches, and base stations.
Data Acquisition Systems: Connects remote sensors, data loggers, and central processing units.
Medical Equipment: Transmits critical data in patient monitoring and imaging devices.
Video Broadcast & Professional AV: Used for signal distribution between studio equipment or over long distances.
The AM26LS31CDR is a time-tested and highly reliable RS-422/RS-485 differential line driver. It efficiently converts single-ended signals into noise-immune differential signals, providing a robust physical layer solution for long-distance digital communication. Its strong drive capability, three-state output control, and thermal protection features make it a core component for building robust industrial networks, data buses, and long-distance transmission systems. For designs that need to ensure data integrity in harsh electrical environments, the AM26LS31CDR is a classic and effective choice.
Industry Information
