MAX3222ECWN+

Overview

The MAX3222ECWN+ 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 an internal dual charge pump requiring only four 0.1μF capacitors. The device provides two drivers and two receivers with full-duplex communication capability, supporting data rates up to 250kbps. It includes a shutdown mode that reduces supply current to 1μA while keeping receivers active for external monitoring. ESD protection is rated at ±15kV (Human Body Model) and ±8kV (IEC Contact Discharge). It is housed in an 18-pin Wide SO package and operates within a temperature range of 0°C to +70°C.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from a single low-voltage power supply.
• Enhanced electrostatic discharge protection safeguards transmitter outputs and receiver inputs against high-voltage static events.
• Low-power shutdown mode significantly reduces consumption while maintaining receiver activity for system monitoring.

Applications

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

Procurement Notes

Verify the specific suffix 'ECWN+' to confirm the 18-pin Wide SO package and commercial temperature range. Confirm lead-free/RoHS compliance status through official manufacturer documentation or authorized distributors before procurement.

Selection Notes

Select this component when space-constrained designs require compatibility with industry-standard MAX242 interfaces but need lower voltage operation. Ensure the application requires only two channels and does not exceed the 250kbps data rate limit under worst-case load conditions.

Part Context

This part belongs to the MAX3222E family of True RS-232 transceivers designed for low-power applications. It serves as a direct pin-and-function compatible replacement for legacy MAX242 devices, offering improved ESD robustness and reduced power consumption in modern portable electronics.

Replacement Considerations

The MAX3222ECPN+ offers identical functionality in a Plastic DIP package. For surface-mount alternatives, the MAX3222EEWN+ provides the same Wide SO footprint with an extended industrial temperature range.