MAX3241EUI+

Overview

The MAX3241EUI+ 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 features three drivers and five receivers. The device guarantees data rates up to 120kbps with worst-case loads of 3kΩ in parallel with 1000pF, while typical operation supports 235kbps. It includes an internal dual charge pump requiring only four 0.1µF external capacitors. The component provides 1µA shutdown 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 extra outputs enable external device monitoring without forward biasing protection diodes
• Low-power shutdown mode extends battery life with active receiver capability

Applications

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

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range of -40°C to +85°C and 'U' denotes the TSSOP package. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors before procurement. Ensure ordering matches the exact pinout and electrical specifications required for the target application design.

Selection Notes

Select this component when interfacing TTL/CMOS logic with RS-232 standards in low-voltage systems. The MAX3241EUI+ is suitable for applications requiring multiple receiver inputs and driver outputs within a compact footprint. Consider the guaranteed 120kbps rate for standard compatibility or typical 235kbps performance for higher speed needs under lighter loads.

Part Context

This part belongs to the MAX32xx family of low-power RS-232 transceivers designed for 3V to 5.5V operation. It shares functional 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

MAX3241EAI+