ADM232AARWZ-REEL

Overview

The ADM232AARWZ-REEL 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 with on-board DC-DC converters that generate ±10 V using four external 0.1 µF capacitors. It meets EIA-232-E and V.28 specifications, providing ±9 V output swing and ±30 V receiver input levels. The component is housed in a 16-lead wide SOIC package (RW-16) and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates on-board charge pump voltage doublers and inverters to generate bipolar RS-232 levels from a single 5 V supply.
• Features internal pull-up resistors on TTL/CMOS inputs and pull-down resistors on RS-32 inputs for stable logic states.
• Includes Schmitt trigger inputs on receivers to ensure error-free reception of noisy signals or slow transition times.
• Provides limited slew rates to minimize electromagnetic interference without requiring external limiting components.

Applications

• Computers
• Peripherals
• Modems
• Printers
• Instruments

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package dimensions and reel quantities. Confirm RoHS compliance status as indicated by the 'Z' suffix. Ensure the supplier provides valid traceability for the Analog Devices manufacturing lot. Cross-reference the datasheet revision to validate electrical parameters before final procurement decisions.

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. Consider alternatives like the ADM222 or ADM242 if shutdown or enable control features are necessary for power management or bus sharing.

Part Context

This part belongs to the ADM222/ADM232A/ADM242 family of high-speed CMOS RS-232 transceivers. It serves as a direct replacement for older ADI models while maintaining compatibility with industry-standard MAX222/MAX232A/MAX242 pinouts. The family utilizes BiCMOS technology to balance low power consumption with high-speed signal integrity.

Replacement Considerations

Pin-compatible substitutes include the ADM232AARNZ and ADM232AARW. For designs requiring shutdown functionality, consider the ADM222 series. Designs needing both shutdown and enable capabilities should evaluate the ADM242 series instead.

FAQ

Does the ADM232AARWZ-REEL include shutdown or enable pins?

No, the ADM232A model does not feature SHDN or EN pins. These functions are available only in the ADM222 and ADM242 variants within the same family.

What is the maximum data rate supported by this device?

The device supports transmission rates up to 200 kB/s under standard operating conditions.

How many external capacitors are required for operation?

Four external 0.1 µF capacitors are required to support the internal charge pump voltage converter circuitry.