MAX3225EEUP/V+T

Overview

The MAX3225EEUP/V+T is a low-power RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 3.0V to 5.5V and supports data rates up to 1Mbps. The device integrates two drivers and two receivers in a TSSOP-20 package. Key electrical specifications include an operating supply current of 1mA and 15kV ESD protection on all pins. It features AutoShutdown functionality for power conservation and meets EIA/TIA-232-F standards.

Feature Summary

• Integrates AutoShutdown circuitry to automatically place the receiver in a low-power state when no valid signal is present and return to active mode upon signal detection.
• Provides robust 15kV human-body model ESD protection on all RS-232 signal pins, enhancing reliability in harsh environments.
• Utilizes small external charge pump capacitors (typically 0.1µF) to generate internal voltages, minimizing board space requirements.

Applications

• Portable computers and notebook PCs requiring low-power serial communication interfaces.
• Industrial control systems with limited power budgets.
• Handheld devices and medical instruments needing reliable RS-232 connectivity.

Procurement Notes

Verify the suffix 'V+' indicates RoHS compliance and lead-free status per manufacturer documentation. Confirm the 'T' suffix denotes tape-and-reel packaging if reel quantity is required. Cross-reference the full part number against the official Maxim Integrated datasheet to ensure pinout and electrical characteristics match the specific revision. Check for any recent product change notices or obsolescence announcements from Analog Devices.

Selection Notes

Select this component when a dual-driver RS-232 interface is needed with strict power constraints. The 3V to 5.5V input range suits single-supply battery-operated systems. Ensure the application requires 1Mbps speed; lower-speed alternatives may offer different cost profiles. Verify that the TSSOP-20 package fits the PCB layout constraints compared to DIP or SSOP options.

Part Context

This part belongs to the MAX3225E family of fully integrated, low-power RS-232 transceivers. It is designed for applications where power consumption is critical, such as mobile computing. The EEUP variant specifically refers to the TSSOP-20 surface-mount package version. It shares core functionality with other members of the MAX322x series but differs in package type and specific suffix designations.

Replacement Considerations

Direct replacements include the MAX3225EEUP without the V+ suffix if non-RoHS is acceptable, or the MAX3225CPP+ for through-hole DIP applications. Other compatible parts in the same family include the MAX3222E and MAX3232E, though pinouts and driver/receiver counts may vary. Always verify electrical compatibility and package dimensions before substitution.