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ADM211ARS

ADM211ARS Description

The ADM211ARS from Analog Devices Inc. is a full-duplex RS-232 transceiver designed for surface-mount applications. Housed in a 28-pin SSOP package, this IC integrates 4 drivers and 5 receivers, supporting data rates up to 120 kbps with a supply voltage range of 4.5V to 5.5V. It features 650 mV of receiver hysteresis, ensuring robust noise immunity in electrically noisy environments. The device complies with RS-232 protocol standards and is classified under ECCN EAR99 and HTSUS 8542.39.0001. Although marked as obsolete, it remains a reliable choice for legacy systems requiring stable serial communication.

ADM211ARS Features

• High Integration: Combines 4 drivers and 5 receivers in a compact 28-SSOP package.
• Noise Immunity: 650 mV receiver hysteresis minimizes errors in high-noise conditions.
• Wide Voltage Range: Operates from 4.5V to 5.5V, compatible with standard logic levels.
• Full-Duplex Communication: Enables simultaneous bidirectional data transmission.
• Legacy Support: Ideal for maintaining or upgrading older RS-232-based systems.
• Moisture Sensitivity Level (MSL) 1: Suitable for extended storage and handling without moisture concerns.

ADM211ARS Applications

• Industrial Automation: Used in PLC interfaces and factory control systems requiring robust serial communication.
• Telecom Equipment: Provides reliable RS-232 signaling for modems and legacy networking devices.
• Medical Devices: Ensures stable data transfer in patient monitoring systems with EMI challenges.
• Point-of-Sale (POS) Terminals: Supports peripheral connectivity in retail environments.
• Embedded Systems: Integrates into microcontroller-based designs needing multi-channel RS-232 support.

Conclusion of ADM211ARS

The ADM211ARS is a high-performance RS-232 transceiver offering noise immunity, full-duplex operation, and multi-channel capability. While obsolete, its proven reliability makes it suitable for legacy industrial, telecom, and medical applications. Engineers seeking a compact, robust solution for serial communication in noisy environments will find this IC a dependable choice. For new designs, consider modern alternatives with enhanced features, but the ADM211ARS remains a strong option for maintaining existing systems.