MAX3241EAI+T

Overview

The MAX3241EAI+T is a true RS-232 transceiver from Analog Devices/Maxim Integrated, featuring three drivers and five receivers in a 28-pin SSOP package. It operates on a single 3.0V to 5.5V supply with a dual charge pump requiring only four 0.1µF capacitors. The device guarantees data rates up to 120kbps, typically reaching 235kbps, while maintaining standard RS-232 output levels. It includes shutdown functionality reducing supply current to less than 1µA and provides always-active complementary receiver outputs for monitoring external devices without forward biasing protection diodes.

Feature Summary

• Integrated dual charge pump eliminates the need for bipolar ±12V supplies
• Always-active complementary receiver outputs enable system monitoring during shutdown
• Shutdown mode reduces supply current to less than 1µA while keeping receivers active

Applications

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

Procurement Notes

Verify the component matches the exact part number MAX3241EAI+T, ensuring the 'E' suffix indicates the industrial temperature range of -40°C to +85°C and the 'AI' suffix corresponds to the 28-pin SSOP package. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates before procurement.

Selection Notes

Select this component when designing systems requiring multiple receiver channels alongside standard transmitter capabilities. The inclusion of two extra complementary outputs (R1OUTB, R2OUTB) makes it suitable for applications needing continuous line monitoring even when the main receiver logic is disabled or powered down.

Part Context

This device belongs to the MAX32xx family of low-power RS-232 transceivers designed for single-supply operation. Unlike the MAX3232 which offers two drivers and receivers, the MAX3241 expands channel capacity to three drivers and five receivers, providing greater flexibility for complex serial communication interfaces in space-constrained designs.

Replacement Considerations

The MAX3232 serves as a functional substitute if fewer channels are required, offering pin compatibility with two drivers and receivers. For higher speed requirements, the MAX3237 supports MegaBaud operation up to 1Mbps but features an inverted configuration of three receivers and five drivers.