MAX3222EAP+

Overview

The MAX3222EAP+ 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 an internal dual charge pump requiring only four 0.1µF external capacitors. The device provides two drivers and two receivers, supporting full-duplex communication at guaranteed data rates up to 120kbps. It includes a shutdown mode that reduces supply current to less than 1µA while keeping the receiver active for monitoring. The component is housed in a 20-pin SSOP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated dual charge pump eliminates the need for bipolar ±12V supplies
• Low-power shutdown mode extends battery life with minimal standby current
• Always-on complementary outputs enable external device monitoring without forward biasing protection diodes

Applications

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

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm the exact package type and temperature rating. Ensure compatibility with existing PCB footprints and thermal requirements before finalizing procurement decisions.

Selection Notes

Select this component when interfacing TTL/CMOS logic with RS-232 standards using a single low-voltage power source. It serves as a direct pin-compatible replacement for industry-standard MAX232 devices, simplifying design transitions for portable applications.

Part Context

This part belongs to the MAX3222/MAX3232/MAX3237/MAX3241 family of low-power RS-232 transceivers. The MAX3222 variant specifically offers two drivers and two receivers, distinguishing it from other family members with different channel counts or higher speed capabilities.

Replacement Considerations

The MAX3222EAP+ is functionally compatible with the MAX232. Verify pinout alignment and voltage level specifications when substituting legacy components in existing designs.