MAX3241ECAI

Overview

The MAX3241ECAI is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin SSOP package. It operates on a single +3.0V to +5.5V supply and features three drivers and five receivers for complete serial port implementation. The device guarantees data rates up to 250kbps with worst-case loads of 3kΩ parallel to 1000pF. It incorporates an internal dual charge pump requiring only four 0.1µF external capacitors. ESD protection is rated at ±15kV (Human Body Model) and ±8kV (IEC Contact Discharge). Shutdown mode reduces supply current to less than 1µA while keeping receivers active.

Feature Summary

• Proprietary low-dropout transmitter output stage delivers true RS-232 performance from a single +3.0V to +5.5V supply.
• Internal dual charge pump requires only four small 0.1µF external capacitors for operation.
• Enhanced ESD protection safeguards all transmitter outputs and receiver inputs against high static discharge events.
• Shutdown mode significantly reduces power consumption while maintaining receiver activity for external device monitoring.

Applications

• Notebook, subnotebook, and palmtop computers
• Battery-powered equipment and handheld devices
• Cell-phone data cables and peripherals

Procurement Notes

Verify the specific suffix 'CAI' indicates the commercial temperature range (0°C to +70°C) and SSOP-28 packaging. Confirm RoHS compliance status as required by your assembly specifications. Ensure the ordering code matches the exact pin configuration and voltage requirements for your target application design.

Selection Notes

Select this component when a complete serial port solution with three drivers and five receivers is required. It is suitable for space-constrained designs due to the SSOP package and minimal external capacitor count. Verify that the 250kbps data rate meets system requirements, as higher speeds are not supported in standard mode.

Part Context

The MAX3241E belongs to the MAX32xxE family of low-power, true RS-232 transceivers. This series is designed to replace legacy RS-232 interfaces in portable electronics. The MAX3241E specifically provides a full serial port configuration, distinguishing it from lower-channel variants like the MAX3222E or MAX3232E within the same product line.

Replacement Considerations

MAX3241EEAI+ is the industrial temperature grade (-40°C to +85°C) equivalent in the same SSOP-28 package. MAX3241EWI+ offers the same functionality in a 28-SOIC package. Verify thermal range and footprint compatibility before substitution.