**ADM1385ARSZ-REEL: A Complete Overview of the 3V ±15kV ESD-Protected, +3V Powered, RS-232 Line Driver/Receiver**

In the realm of data communication, the RS-232 standard remains a widely used protocol for serial communication interfaces. To meet the demands of modern low-power and space-constrained applications, integrated solutions that combine robust performance with minimal power consumption are essential. The **ADM1385ARSZ-REEL** from Analog Devices is a highly integrated, **+3V single-supply powered** transceiver that stands out by offering a complete RS-232 solution in a compact package while providing exceptional protection against electrostatic discharge (ESD).

This device integrates two line drivers and two line receivers, forming a complete serial port interface. A key differentiator is its ability to operate from a single **+3.0V to +3.6V power supply**, making it exceptionally suitable for battery-powered and low-voltage logic systems. Despite this low voltage requirement, it **generates the necessary ±5.5V RS-232 output voltages** internally through an efficient on-chip charge pump, eliminating the need for costly and bulky external dual power supplies.

Perhaps its most critical feature is its **robust ±15kV ESD protection** on all transmitter outputs and receiver inputs, as tested using the Human Body Model (HBM). This level of protection is crucial for applications in harsh environments or where interfaces are frequently connected and disconnected, significantly enhancing system reliability and reducing the need for additional external protection components.

The ADM1385ARSZ-REEL is designed for high-data-rate communication, supporting **signaling rates up to 250kbps**, which is sufficient for a vast majority of industrial, instrumentation, and point-of-sale applications. Its receivers remain operational with input levels as low as ±0.5V, ensuring reliable data reception even in the presence of significant line noise and signal degradation. Furthermore, it features a low-power shutdown mode that reduces the supply current to a mere 1µA, a vital attribute for maximizing battery life in portable equipment.

Housed in a narrow-body 20-lead SSOP package, the -REEL suffix indicates it is supplied on a reel for high-volume, automated manufacturing. This makes it an ideal choice for mass production.

**ICGOOODFIND**: The ADM1385ARSZ-REEL is an outstanding solution for designers seeking a **compact, low-power, and incredibly robust RS-232 interface**. Its integration of a charge pump, high-level ESD protection, and a complete transceiver into a single chip simplifies design, reduces board space, and dramatically improves end-product reliability.

**Keywords**: RS-232 Transceiver, ESD Protection, Low-Power, Single 3V Supply, Charge Pump