MAX3237CAI+T

Overview

The MAX3237CAI+T is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +3.0V to +5.5V supply and features five drivers and three receivers in a 28-pin SSOP package. The device guarantees data rates of 250kbps in normal mode and up to 1Mbps in MegaBaud mode. It utilizes a dual charge pump requiring only four 0.1µF external capacitors. The operating temperature range is 0°C to +70°C, with a typical supply current of 2mA.

Feature Summary

• Integrated dual charge pump eliminates the need for bipolar ±12V supplies
• MegaBaud operation enables transmission rates up to 1Mbps
• Always-active complementary receiver outputs allow monitoring without forward biasing protection diodes

Applications

• Battery-powered equipment
• Hand-held equipment
• Peripherals
• Datacom equipment

Procurement Notes

Verify the component origin matches Analog Devices or Maxim Integrated specifications. Confirm the SSOP-28 package type and lead-free construction align with the + suffix designation. Ensure the industrial temperature grade corresponds to the CAI variant requirements for your specific operational environment.

Selection Notes

Select this part when five transmitter channels and three receiver channels are required within a compact footprint. The MegaBaud capability supports high-speed serial communication needs. Verify that the system power supply remains within the 3.0V to 5.5V range to ensure proper charge pump functionality and signal integrity.

Part Context

This component belongs to the MAX3222/MAX3232/MAX3237/MAX3241 family of low-power RS-232 transceivers. It shares the same proprietary low-dropout transmitter output stage and charge pump architecture as its siblings, differing primarily in the number of driver and receiver channels provided.

Replacement Considerations

MAX3237EAI+T serves as a verified alternative offering an extended temperature range of -40°C to +85°C while maintaining identical pinout and electrical characteristics.