MAX3241EEAI+G1Z

Overview

The MAX3241EEAI+G1Z is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3.0V to +5.5V supply and features three drivers and five receivers in a 28-pin SSOP package. The device guarantees data rates up to 250kbps with worst-case loads of 3kΩ in parallel with 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 all receivers active.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from a low-voltage single supply using minimal external components.
• Enhanced electrostatic discharge protection ensures robust operation against high-voltage static events without latchup.
• Low-power shutdown mode significantly reduces consumption while maintaining receiver activity for system monitoring.

Applications

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

Procurement Notes

Verify the specific suffix G1Z indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the EE designation corresponds to the extended industrial temperature range of -40°C to +85°C. Ensure the AI suffix matches the required 28-pin SSOP physical footprint for your PCB layout. Cross-reference the exact part number with official distributor catalogs to confirm current production status.

Selection Notes

Select this component when designing serial communication interfaces for space-constrained mobile devices requiring multiple transmitter and receiver channels. It is suitable for applications needing high ESD immunity and low standby power consumption. Verify that the load capacitance requirements align with the guaranteed 250kbps data rate specifications provided in the datasheet electrical characteristics.

Part Context

This device belongs to the MAX32xxE family of low-power RS-232 transceivers designed for 3V systems. It shares functional compatibility with industry-standard parts but offers improved power efficiency and enhanced ESD protection. The MAX3241 variant specifically provides a complete serial port configuration with three drivers and five receivers, distinguishing it from simpler two-driver models within the same series.

Replacement Considerations

MAX3241ECAI+G1Z

FAQ

How does the shutdown mode affect the receiver outputs?

In shutdown mode, the transmitters are disabled and enter a high-impedance state, but all five receivers remain active to monitor external signals while consuming less than 1μA of supply current.

What is the maximum data rate guaranteed under standard operating conditions?

The device guarantees operation at data rates up to 250kbps with worst-case loads of 3kΩ in parallel with 1000pF.

Does the device require external voltage regulators for the charge pump?

No, the MAX3241EEAI+G1Z includes an internal regulated dual charge pump that generates the necessary positive and negative voltages using only four small external capacitors.