MAX3241CUI+

Overview

The MAX3241CUI+ is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin TSSOP package. 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 three drivers and five receivers, supporting full-duplex communication with guaranteed data rates up to 120kbps at standard loads. It provides shutdown functionality with less than 1µA supply current and includes always-active complementary receiver outputs for monitoring.

Feature Summary

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

Applications

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

Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature range of 0°C to +70°C. Confirm the 'U' package code corresponds to the 28-TSSOP form factor. Ensure the '+' suffix denotes lead-free compliance. Cross-reference the manufacturer's latest ordering guide for any potential pinout or functional revisions.

Selection Notes

Select this component when a high channel count (3 drivers, 5 receivers) is required within a compact surface-mount footprint. It is suitable for systems needing low standby power and direct interface with 3V logic families. Verify that the 120kbps guaranteed rate meets system timing requirements before finalizing the design.

Part Context

This part belongs to the MAX32xx family of low-power RS-232 transceivers. It shares architectural similarities with the MAX3222 and MAX3232 but offers increased I/O capacity. The CUI+ variant specifically targets cost-sensitive commercial applications requiring space-saving packaging and simplified power management.

Replacement Considerations

MAX3241EUI+