MAX3228AEEWV+T

Overview

The MAX3228AEEWV+T is a dual-channel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a +2.5V to +5.5V supply and supports data rates up to 250kbps. The device features ±15kV ESD protection on I/O pins, AutoShutdown functionality reducing supply current to 1µA, and configurable logic levels via a separate VL input. Packaged in a 6x5 WLP format, it functions across an extended temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown technology reduces power consumption by disabling the charge pump and drivers when no valid signal is detected.
• Integrated dual-mode regulated charge pump generates required voltage levels for RS-232 compliance down to low supply voltages.
• Separate logic supply input allows flexible interfacing with various system logic families.

Applications

• Personal Digital Assistants
• Cell Phone Data Lump Cables
• Set-Top Boxes

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the package type matches the specified WLP configuration and check for RoHS compliance documentation. Ensure the operating temperature range aligns with the intended application environment requirements before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring minimal footprint and low power consumption in portable devices. Consider the separate VL pin if interfacing with logic families different from the main supply voltage. Verify capacitor values based on the specific supply voltage used to ensure stable charge pump operation.

Part Context

This part belongs to the MAX3228E/AE family of RS-232 transceivers designed for space-constrained environments. It shares functional similarities with other Maxim integrated circuits but distinguishes itself through its ultra-small WLP packaging and advanced power management features suitable for battery-operated systems.

Replacement Considerations

Direct replacements include the MAX3229AEEWV+T for single-channel applications within the same package and feature set. Other compatible options may exist within the broader MAX32xx series, provided they match the electrical specifications and physical dimensions required for the design.

FAQ

How does the AutoShutdown feature function?

AutoShutdown disables the internal charge pump and drivers when no valid RS-232 signal is detected on any receiver input for more than 30µs, reducing supply current to 1µA.

What is the purpose of the VL pin?

The VL pin provides a separate logic supply input, allowing the receiver outputs and transmitter inputs to interface with logic levels ranging from +1.65V to VCC.

What ESD protection levels are supported?

The device supports ±15kV Human Body Model, ±8kV IEC 1000-4-2 Contact Discharge, and ±15kV IEC 1000-4-2 Air-Gap Discharge protection.