MAX3241CAI+T

Overview

The MAX3241CAI+T is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features three drivers and five receivers, operating on a single 3.0V to 5.5V supply with a dual charge pump requiring only four 0.1µF external capacitors. The device guarantees data rates of 120kbps at standard loads and typically supports up to 235kbps. It includes two always-active complementary receiver outputs (R1OUTB, R2OUTB) for monitoring without forward biasing protection diodes. The component operates within a commercial temperature range of 0°C to +70°C and is housed in a 28-pin SSOP package.

Feature Summary

• Integrated dual charge pump eliminates the need for bipolar ±12V supplies
• Always-on complementary receiver outputs enable external device monitoring during shutdown
• Low-power operation with less than 1µA supply current in shutdown mode

Applications

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

Procurement Notes

Verify that the ordering suffix 'C' confirms the 0°C to +70°C commercial temperature range and 'AI' specifies the 28-pin SSOP package. Confirm the '+' suffix indicates lead-free compliance. Ensure the '+T' designation matches the required reel packaging format for surface-mount assembly processes.

Selection Notes

Select this part when a high channel count (3 Tx/5 Rx) is required alongside low-voltage compatibility. The MAX3241 is specifically designed to drive serial mice from low-voltage supplies. Verify that the 120kbps guaranteed rate meets system timing requirements, as higher speeds are typical but not guaranteed under worst-case loads.

Part Context

This component belongs to the MAX32xx family of low-power RS-232 transceivers. It shares architectural similarities with the MAX3222 and MAX3232 but provides additional receiver channels. The 'E' variant offers an extended -40°C to +85°C temperature range, while the 'C' variant is limited to commercial temperatures.

Replacement Considerations

MAX3241EAI+T serves as the extended temperature version. MAX3241CUI+T is the TSSOP package alternative.