ADM232AARNZ-REEL7

Overview

The ADM232AARNZ-REEL7 is a high-speed RS-232 line driver and receiver manufactured by Analog Devices Inc. It operates from a single 5 V power supply and supports transmission rates up to 200 kB/s. The device integrates two drivers and two receivers within a 16-lead Standard Small Outline Package (SOIC, R-16). Internal charge pumps generate the necessary bipolar voltage levels using four external 0.1 µF capacitors. It meets EIA-232-E and V.28 specifications and features Schmitt trigger inputs on the receivers for noise immunity.

Feature Summary

• Integrates internal DC-DC converters to generate required RS-232 voltage swings from a single 5 V supply.
• Features Schmitt trigger inputs on receivers to ensure error-free reception of noisy signals with slow transition times.
• Includes internal pull-up resistors on TTL/CMOS transmitter inputs and pull-down resistors on RS-32 receiver inputs.

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify that the ordering suffix REEL7 corresponds to the specific tape and reel packaging configuration required for automated assembly processes. Confirm the presence of the Z suffix indicates RoHS compliance status as defined in the manufacturer's documentation. Ensure the component matches the 16-lead SOIC package dimensions specified in the datasheet outline drawings.

Selection Notes

Select this component when a pin-compatible upgrade for legacy AD232 or ADM232L designs is required. It is suitable for applications needing full-duplex communication at speeds up to 200 kB/s without requiring additional shutdown control pins found in the ADM222 or ADM242 variants. Verify that the system can accommodate the four required 0.1 µF external capacitors for the charge pump circuitry.

Part Context

This part belongs to the ADM222/ADM232A/ADM242 family of high-speed CMOS RS-232 transceivers. Unlike the ADM222 and ADM242, the ADM232A lacks dedicated Enable (EN) and Shutdown (SHDN) pins, making it a simpler solution for always-on serial communication links. It serves as a direct replacement for older generation devices while offering improved speed and lower power consumption.

Replacement Considerations

Pin-compatible alternatives include the ADM232AARW and ADM232AANZ. For designs requiring power management, consider the ADM222 or ADM242 which add shutdown and enable functionality respectively.