MAX3222EEUP+G071

Overview

The MAX3222EEUP+G071 is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3.0V to +5.5V supply and features two drivers and two receivers for full-duplex communication. The device guarantees data rates up to 250kbps while maintaining true RS-232 output levels using an internal dual charge pump that requires only four 0.1μF capacitors. It includes a shutdown mode with 1μA typical supply current, keeping receivers active for external monitoring. ESD protection is rated at ±15kV (Human Body Model) and ±8kV (IEC Contact Discharge). It is housed in a 20-pin TSSOP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated dual charge pump enables operation from a single low-voltage supply without requiring external voltage inversion circuits.
• Enhanced electrostatic discharge protection safeguards transmitter outputs and receiver inputs against high-voltage static events.
• Low-power shutdown mode significantly reduces consumption while allowing continuous monitoring of the serial line.
• Pin-compatible design ensures direct replacement for legacy industry-standard RS-232 interface devices.

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm the specific suffix matches the required thermal and packaging specifications. Check for RoHS compliance status as indicated in official documentation. Ensure the part number corresponds to the exact pinout and electrical characteristics required for the target application.

Selection Notes

Select this component when designing systems requiring robust RS-232 connectivity under low-voltage conditions. Consider the 250kbps speed limit for standard asynchronous communication needs. Evaluate the 20-pin TSSOP footprint against available board space constraints. Verify that the external capacitor values align with the specified minimum requirements for stable charge pump operation.

Part Context

This device belongs to the MAX3222E family of True RS-232 Transceivers. It shares functional compatibility with older MAX242 series parts but offers improved power efficiency and higher ESD tolerance. The EE designation indicates the extended industrial temperature range variant. The G071 suffix typically denotes lead-free and RoHS-compliant manufacturing standards.

Replacement Considerations

The MAX3222EEUP+ serves as the primary equivalent part number. Designers replacing legacy MAX242 components should verify that the lower supply voltage requirements are compatible with the system architecture.