MAX3222EETP+

Overview

The MAX3222EETP+ is a true RS-232 transceiver manufactured by Analog Devices/Maxim Integrated, housed in a 20-pin TQFN-EP package (5mm x 5mm). 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 under standard conditions, with propagation delays of 0.15µs. It incorporates an internal dual charge pump requiring only four 0.1µF capacitors. A shutdown mode reduces supply current to 1µA while keeping receivers active. ESD protection ratings include ±15kV Human Body Model and ±8kV IEC Contact Discharge.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from a single low-voltage supply without external inductors.
• Shutdown control significantly reduces power consumption while maintaining receiver activity for external device monitoring.
• Enhanced electrostatic discharge protection safeguards transmitter outputs and receiver inputs against high-voltage static events.

Applications

• Battery-powered portable equipment
• Cell phone and smartphone serial interfaces
• Notebook and subnotebook computers

Procurement Notes

Verify the specific suffix EE indicates the extended temperature range (-40°C to +85°C) compared to EC variants. Confirm the TQP packaging corresponds to the required surface-mount footprint. Ensure the component matches the official datasheet specifications for voltage levels and pinout compatibility before finalizing procurement orders.

Selection Notes

Select this model when space constraints require a compact TQFN package alongside low-power requirements. It serves as a direct functional replacement for industry-standard MAX232 devices in modern low-voltage designs. Consider the shutdown feature if battery life optimization is critical for the target application environment.

Part Context

This component belongs to the MAX3222E family of RS-232 transceivers designed for low-voltage operation. It shares functional compatibility with legacy MAX232 standards but utilizes advanced charge-pump technology for improved efficiency. The E-series designation specifically denotes the industrial temperature grade suitable for broader environmental operating conditions.

Replacement Considerations

The MAX3222ECPN+ offers identical electrical functionality in a 18-pin PDIP package. The MAX3222ECWN+ provides the same performance in an 18-pin Wide SOIC format. These alternatives maintain pinout compatibility for through-hole or wider SMD board layouts.