MAX225EWI+TG36

Overview

The MAX225EWI+TG36 is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.75V to 5.25V and features an extended industrial temperature range from -40°C to +85°C. The device integrates dual charge-pump DC-DC voltage converters that generate the necessary ±10V internal voltages for RS-232 signaling without requiring external bipolar supplies. It provides five drivers and two receivers in a 28-pin Wide SOIC package.

Feature Summary

• Integrates dual charge-pump circuits to generate internal ±10V rails from a single +5V supply, eliminating the need for external bipolar power sources.

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 communication networks
• Portable diagnostic equipment

Procurement Notes

Verify the specific suffix 'TG36' against official manufacturer documentation to confirm lead-free status and tape-and-reel packaging details. Confirm current production status as this component family may be subject to discontinuation notices.

Selection Notes

Select this part when designing systems requiring multiple RS-232 transmit channels with a single +5V supply constraint. Ensure the application does not require loading the V+ or V- pins, as these are unavailable on the MAX225 variant.

Part Context

This component belongs to the MAX220–MAX249 family of line drivers/receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The MAX225 specifically distinguishes itself by providing five transmitter outputs while omitting the V+ and V- output pins found on other family members.

Replacement Considerations

Public confirmed substitute part numbers: None identified.