MAX3241EAI+

Overview

The MAX3241EAI+ is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin SSOP 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 data rates up to 120kbps with guaranteed RS-232 output levels under worst-case loads of 3kΩ parallel with 1000pF. It provides shutdown functionality with supply current below 1µA 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
• Shutdown mode reduces supply current to less than 1µA while maintaining receiver activity

Applications

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

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C) and 'AI' denotes the 28-pin SSOP package configuration. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to procurement.

Selection Notes

Select this component when interfacing TTL/CMOS logic with RS-232 lines in low-voltage systems. Ensure application requirements align with the 120kbps guaranteed data rate limit. Verify that the 28-pin SSOP footprint matches the PCB layout constraints and thermal dissipation capabilities of the target design.

Part Context

This part belongs to the MAX32xx family of low-power RS-232 transceivers designed for single-supply operation. It shares architectural similarities with the MAX3222 and MAX3232 but offers increased I/O capacity with five receivers and three drivers. The E-series designation specifically targets industrial environments requiring wider operating temperature ranges compared to commercial variants.

Replacement Considerations

MAX3241CAI+