MAX222EWN+T

Overview

The MAX222EWN+T is a dual driver and dual receiver RS-232 transceiver from the MAX220–MAX249 family. It operates on a single +5V supply, utilizing an integrated charge pump to generate internal ±10V rails without external bipolar supplies. The device supports data rates up to 200kbps with a typical transition slew rate of 12V/µs. It features a shutdown mode that reduces supply current to 10µA maximum at +25°C. The component is housed in a 16-lead Wide SOIC package and is rated for operation within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar power supplies
• Single +5V supply operation capability
• Shutdown mode significantly reduces power consumption

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostics equipment requiring low power

Procurement Notes

Verify the specific suffix 'W' corresponds to the 16-lead Wide SOIC package and 'N' indicates lead-free construction. Confirm the '+T' designation matches the required reel packaging quantity. Ensure the ordering code aligns with the -40°C to +85°C temperature grade specified by the 'E' suffix.

Selection Notes

Select this component when designing systems limited to a single +5V power source. It is suitable for applications requiring two independent transmit and receive channels. Consider the 200kbps data rate limit and the requirement for external capacitors for the charge pump circuit during system design.

Part Context

This part belongs to the MAX220–MAX249 family of multichannel RS-232 drivers and receivers. These devices are designed for EIA/TIA-232E and V.28/V.24 interfaces where ±12V supplies are unavailable. The family offers various channel counts and package options to accommodate different board space and interface requirements.

Replacement Considerations

Direct pin-compatible replacements within the same family include the MAX222ACPE+T and MAX222ECPE+T, which share identical functionality but differ in operating temperature ranges and package types.