MAX222CWN+T

Overview

The MAX222CWN+T is a dual RS-232 line driver and receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply, utilizing an integrated charge pump to generate the required ±10V internal voltages without external bipolar supplies. The device supports data rates up to 200kbps with a typical transition slew rate of 12V/µs. It features a low-power shutdown mode drawing only 10µA at +25°C. The component is housed in a 16-pin Narrow SOIC package and is rated for commercial operating temperatures ranging from 0°C to +70°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external voltage inverters or bipolar power supplies.
• Single +5V supply operation simplifies system design and reduces overall power requirements.
• Low-power shutdown mode significantly reduces current consumption when the interface is inactive.

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring battery-powered serial connectivity

Procurement Notes

Verify that the ordering suffix 'C' corresponds to the 0°C to +70°C temperature range and 'W' indicates the 16-pin Narrow SOIC package. Confirm the '+T' suffix matches the specific reel packaging configuration required for your assembly process. Cross-reference the manufacturer's latest datasheet revision to ensure compliance with current RoHS directives and material declarations before finalizing procurement.

Selection Notes

Select this component when designing systems limited to a single +5V rail where space constraints prevent the use of discrete charge pumps. Ensure the application does not require data rates exceeding 200kbps or extended industrial temperature ranges beyond +70°C. Verify that the 16-pin Narrow SOIC footprint aligns with the target PCB layout and that the standard propagation delays meet the timing requirements of the connected microcontroller or host system.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-32 drivers and receivers. The MAX222 specifically provides two drivers and two receivers within a compact 16-pin package. This family is designed to replace traditional RS-232 transceivers that require complex external capacitor networks and negative voltage generators, offering a simplified solution for embedded serial communication interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.