The SP489ET is a low-power, half-duplex RS-485 transceiver from Exar Corporation, designed for robust communication in industrial applications. It provides reliable data transmission over long distances and features enhanced electrostatic discharge (ESD) protection, making it suitable for harsh environments prone to electrical surges and noise. The device is ideal for applications requiring dependable data exchange with minimal power consumption.

Applications:

• Industrial Control Systems
• Building Automation
• Motor Control
• Remote Sensor Networks
• Security Systems
• Point-of-Sale (POS) Terminals

Features:

• Half-Duplex RS-485 Transceiver
• Low Power Consumption
• Data Rates up to 10 Mbps
• ±15kV HBM ESD Protection
• Single 5V Supply
• Thermal Shutdown Protection
• Driver Output Short-Circuit Protection
• Receiver Input Hysteresis

Benefits:

• Robust Communication: Enables reliable data transmission in noisy industrial environments due to high ESD protection and receiver hysteresis.
• Energy Efficiency: Low power consumption optimizes performance in battery-powered applications and reduces overall system energy usage.
• High-Speed Data Transfer: Supports data rates up to 10 Mbps, allowing for efficient communication between devices.
• Enhanced Protection: Features thermal shutdown and short-circuit protection to safeguard the device from overheating and overcurrent conditions, improving longevity and reliability.
• Simplified Integration: Operates from a single 5V supply, streamlining design and integration. Receiver input hysteresis further enhances noise rejection, improving overall system dependability.

The SP489ET meets the TIA/EIA-485 standard. It integrates a driver and receiver into a single package. The differential driver offers excellent noise immunity and enables data transmission over extended distances. The receiver incorporates hysteresis to further improve noise rejection and prevent false triggering. The component is available in a TSSOP package.