Analog Devices Inc. Tariff Inquiry

ADM485AN

ADM485AN Description

The ADM485AN from Analog Devices Inc. is a robust half-duplex RS-422/RS-485 transceiver designed for high-speed differential data communication. Housed in an 8-pin DIP (Through Hole) package, this obsolete but historically significant IC operates within a 4.75V to 5.25V supply range, delivering reliable performance at data rates up to 5Mbps. Its 1 driver/1 receiver configuration and 70mV receiver hysteresis ensure noise immunity in electrically noisy environments, making it suitable for industrial and long-distance communication systems.

ADM485AN Features

• Protocol Support: Compatible with RS-422 and RS-485 standards, enabling versatile integration into multi-point networks.
• High-Speed Operation: 5Mbps data rate facilitates rapid data transmission for time-sensitive applications.
• Noise Resilience: 70mV receiver hysteresis minimizes signal jitter and enhances stability in noisy conditions.
• Wide Supply Range: Operates at 4.75V–5.25V, accommodating typical 5V systems with tolerance for minor fluctuations.
• Industrial Robustness: EAR99 and MSL 1 (Unlimited) ratings indicate suitability for harsh environments and extended storage.
• Legacy Packaging: Through-hole DIP design simplifies prototyping and repair in older systems.

ADM485AN Applications

The ADM485AN excels in applications requiring noise-resistant, high-speed differential communication, such as:

• Industrial Automation: PLCs, motor control, and sensor networks where EMI immunity is critical.
• Telecommunications: Legacy RS-485 infrastructure, including modems and base stations.
• Building Automation: HVAC systems, security networks, and lighting control with multi-drop bus configurations.
• Transportation Systems: Vehicle data buses and railway signaling requiring robust long-distance communication.

Conclusion of ADM485AN

While obsolete, the ADM485AN remains a benchmark for reliable half-duplex RS-485/RS-422 communication, offering a blend of speed, noise immunity, and industrial durability. Its 5Mbps capability and 70mV hysteresis make it ideal for legacy systems or environments where newer surface-mount alternatives are impractical. For designers maintaining or upgrading older infrastructure, the ADM485AN provides a proven, no-compromise solution.