MAX3222CAP+T

Overview

The MAX3222CAP+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 includes an internal dual charge pump requiring only four 0.1µF external capacitors. The device features two drivers and two receivers, supporting data rates up to 120kbps with guaranteed RS-232 output levels under worst-case loads. It provides enhanced ESD protection on all transmitter outputs and receiver inputs. The component is housed in a 20-pin SSOP package and supports an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated dual charge pump eliminates the need for bipolar ±12V supplies
• Always-on complementary receiver outputs enable monitoring without forward biasing protection diodes
• Low-power shutdown mode reduces supply current while keeping receivers active

Applications

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

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with required logic families and voltage levels before integration. Cross-reference pin configurations with standard industry equivalents if replacing legacy components.

Selection Notes

Select this component for applications requiring low-voltage operation and minimal external capacitance. Verify that the 120kbps data rate meets system requirements. Consider the 20-pin SSOP package constraints for board layout and thermal management during design.

Part Context

This part belongs to the MAX3222/MAX3232/MAX3237/MAX3241 family of low-power RS-232 transceivers. It is functionally compatible with industry-standard MAX242 and MAX232 devices, facilitating direct upgrades in existing designs while offering improved power efficiency and single-supply operation.

Replacement Considerations

The MAX3222CAP+T is pin, package, and functionally compatible with the MAX242 and MAX232. Verify that replacement parts maintain the same voltage range and data rate specifications.