MAX3222EUP/V+T

Overview

The MAX3222EUP/V+T is a dual RS-232 transceiver from the MAX3222E series manufactured by Analog Devices/Maxim Integrated. It operates on a single 3.0V to 5.5V supply and utilizes an internal dual charge pump with four external 0.1µF capacitors to generate true RS-232 voltage levels. The device features 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 receivers active for monitoring. The component is housed in a 20-pin TSSOP package and is rated for commercial temperature ranges.

Feature Summary

• Integrated dual charge pump eliminates the need for bipolar ±12V supplies
• Low-power shutdown mode extends battery life in portable applications
• Always-active 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 suffix 'V' against official documentation to confirm if it denotes a valid variant or represents a distributor-specific designation. Confirm the operating temperature range associated with the 'E' grade (-40°C to +85°C) versus the 'C' grade (0°C to +70°C). Ensure the 20-pin TSSOP package matches the required footprint for the design.

Selection Notes

Select this component when interfacing TTL/CMOS logic with RS-232 standards using a single low-voltage supply. It serves as a drop-in replacement for industry-standard MAX232 and MAX242 devices. Consider the MAX3237 or MAX3241 if higher data rates or additional channels are required.

Part Context

This part belongs to the MAX3222/MAX3232/MAX3237/MAX3241 family of low-power, true RS-232 transceivers. These devices share a common architecture featuring proprietary low-dropout transmitter output stages and integrated charge pumps designed for space-saving designs.

Replacement Considerations

The MAX3222 is pin, package, and functionally compatible with the MAX242. The MAX3232 is compatible with the MAX232. Verify compatibility with TRS322E, which shares the same functionality and pinout.