MAX3241ECAI+G1Z

Overview

The MAX3241ECAI+G1Z 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 functionality. 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 1000-4-2 Contact Discharge). The operating temperature range is 0°C to +70°C.

Feature Summary

• Integrated dual charge pump generates ±5.5V from a single low-voltage supply using minimal external capacitance.
• Enhanced electrostatic discharge protection on all transmitter outputs and receiver inputs ensures robustness against high-voltage static events.
• Shutdown mode significantly reduces power consumption while maintaining active receiver monitoring capabilities.

Applications

• Notebook and subnotebook computers
• Battery-powered portable equipment
• Cell-phone data cables

Procurement Notes

Verify the specific suffix G1Z against the manufacturer's current documentation to confirm lead-free status and RoHS compliance. Confirm that the 28-SSOP package dimensions match the design constraints. Ensure the 0°C to +70°C industrial temperature range aligns with the target application environment requirements.

Selection Notes

Select this component when a complete serial port solution with multiple receivers is required for space-constrained designs. It is suitable for applications needing low-power operation with active monitoring during shutdown. Verify compatibility with TTL/CMOS logic levels and ensure the system can accommodate the required four small external capacitors for the charge pump.

Part Context

This part belongs to the MAX32xxE family of low-power, true RS-232 transceivers. It shares functional similarities with the MAX3222E and MAX3232E but provides additional driver and receiver channels. The 'E' designation indicates enhanced ESD protection, while the 'CAI' suffix specifies the commercial temperature range and SSOP package type.

Replacement Considerations

MAX3241EWI+T: SOIC-28 package variant.

FAQ

What is the maximum data rate guaranteed for the MAX3241E?

The MAX3241E guarantees operation at data rates of 250kbps while maintaining RS-232 output levels under worst-case load conditions.

How does the shutdown mode affect the receivers?

In shutdown mode, the supply current drops below 1μA, but the receivers remain active, allowing for the monitoring of external devices.

What external components are required for the charge pump?

The device requires only four small 0.1μF external capacitors for operation from a +3.3V supply.