**ADM1385ARSZ-REEL7: The Robust 3V to 5V RS-232 Interface Solution for Demanding Environments**

In the realm of data communication, the RS-232 standard remains a persistent and vital interface for industrial control, instrumentation, and point-of-sale systems. The **ADM1385ARSZ-REEL7** from Analog Devices stands out as a highly integrated and resilient line driver/receiver specifically engineered to meet the challenges of modern applications. This device combines **robust ESD protection**, wide voltage range operation, and intelligent power management into a single, compact package.

A primary feature of the ADM1385 is its **exceptional ±15kV ESD protection** on transmitter outputs and receiver inputs, as tested using the Human Body Model (HBM). This level of protection is crucial for equipment operating in harsh industrial environments or frequently handled by users, where electrostatic discharge is a common cause of IC failure. It significantly enhances system reliability and longevity, reducing the need for additional external protection components.

The device operates seamlessly across a broad **3V to 5.5V supply voltage** range. This flexibility is a significant advantage, allowing designers to power the interface directly from a single 3.3V or 5V system rail. It ensures compatibility with a wide array of modern low-voltage microcontrollers and logic, simplifying power supply design and eliminating the need for multiple voltage regulators.

Furthermore, the ADM1385 supports data rates up to **460kbps**, guaranteeing faithful data transmission for a majority of industrial and commercial serial communication protocols. Its auto-shutdown feature, officially termed "AutoShutdown Plus," is a key innovation for power-sensitive applications. This function intelligently powers down the device when it detects the absence of a valid RS-232 signal on the receiver inputs or when the UART driving the transmitter inputs is inactive. This capability results in a dramatic reduction of the supply current to a mere 10µA, making it an ideal choice for **battery-powered or energy-conscious portable devices**.

Housed in a narrow-body SOIC package, the ADM1385ARSZ-REEL7 is offered in a tape-and-reel (REEL7) packaging format, making it perfectly suited for high-volume automated manufacturing. Its integration of a charge-pump circuit to generate the required RS-232 voltage levels from the single low-voltage supply eliminates the need for bulky dual power supplies, saving valuable board space.

**ICGOODFIND**: The ADM1385ARSZ-REEL7 is a superior, fully integrated solution for RS-232 communication. Its winning combination of **formidable ESD protection**, **wide operating voltage**, efficient **auto-shutdown**, and compact form factor provides designers with a reliable, space-saving, and power-efficient component that simplifies design and enhances end-product robustness.

**Keywords**: ESD Protection, RS-232 Transceiver, Auto-Shutdown, 3V to 5V Operation, Low Power Consumption