The DS1489J is a quad line receiver designed to interface with single-ended transmission lines. It is manufactured by National Semiconductor, now part of Texas Instruments (TI). This device is commonly used to convert signals from single-ended to differential format, improving noise immunity and signal integrity.

Applications

• RS-232 Interface
• Data Transmission Systems
• Line Receivers
• Industrial Control Systems
• Modems

Features

• Four Independent Receivers: Contains four separate receivers in a single package.
• TTL Compatibility: Compatible with transistor-transistor logic (TTL) levels.
• Built-in Hysteresis: Provides hysteresis for improved noise immunity.
• Single 5V Supply: Operates from a single 5V power supply.
• Input Overvoltage Protection: Offers protection against input overvoltage conditions.

Benefits

• Improved Signal Integrity: Reduces the effects of noise and interference on data transmission.
• Increased Transmission Distance: Allows for longer transmission distances compared to single-ended systems.
• Simplified Interface: Provides a simple and reliable interface between different systems.
• Reduced Component Count: Integrates four receivers into a single package, reducing board space and component count.

Additional Details

The DS1489J is typically available in a DIP (Dual In-Line Package) or SOIC (Small Outline Integrated Circuit) package. Each receiver features a high input impedance and a low output impedance. The propagation delay is typically in the nanosecond range. The device adheres to the RS-232 standard for serial communication. Datasheet research would be required to confirm parameters such as exact Input Resistance, Propagation Delay and Detailed Logic thresholds for Input/Output.