MAX225CWI+TG36

Overview

The MAX225CWI+TG36 is a +5V-powered, multichannel RS-232 driver/receiver from the Analog Devices/Maxim Integrated MAX220–MAX249 family. It operates within a supply voltage range of 4.75V to 5.25V and supports data rates up to 120kbps. The device features an integrated charge pump that generates ±10V internal voltages, eliminating the need for external bipolar supplies or discrete capacitors. It includes four drivers and five receivers with independent enable controls. Operating temperatures range from 0°C to +70°C, and it is housed in a 28-pin Wide SOIC package.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external components and enables single-supply operation.
• Internal capacitor integration significantly reduces printed circuit board space requirements.
• Independent control inputs allow selective shutdown of transmitters and receivers to minimize power consumption.

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring low power and compact form factors

Procurement Notes

Verify the component against official manufacturer documentation to confirm pinout compatibility and electrical specifications. Ensure the ordering suffix matches the required temperature grade and packaging format. Cross-reference the part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when board space is limited due to its integrated capacitor design. It is suitable for applications requiring multiple channels without external bipolar power supplies. Verify that the required data rate does not exceed 120kbps and that the operating environment stays within the commercial temperature range.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered RS-232 transceivers. These devices are designed to replace traditional dual-supply solutions by integrating charge pumps directly onto the silicon. The MAX225 specifically provides four drivers and five receivers, offering high channel density in a single package.

Replacement Considerations

Direct replacements include other members of the MAX220–MAX249 family such as the MAX245, MAX246, or MAX247. Verify channel count and control pin configurations when substituting, as these vary across the family.