MAX3218CWP

Overview

The MAX3218CWP is a dual RS-232 transceiver designed for battery-powered EIA/TIA-232E and V.28/V.24 communications interfaces requiring minimal power consumption from a single low-voltage supply. It features two drivers and two receivers with an operating supply voltage range of +1.8V to +4.25V. The device guarantees a data rate of 120kbps and incorporates AutoShutdown technology to achieve a typical supply current of 1µA in shutdown mode. It operates directly from two alkaline, NiCd, or NiMH cells and includes on-board DC-DC converters.

Feature Summary

• AutoShutdown technology minimizes power consumption by automatically disabling the charge pump when no valid signal is present at the receiver input.
• Integrated on-board DC-DC converters eliminate the need for external capacitors, reducing component count and board space.
• Flow-through pinout design allows for easy upgrades from standard bipolar RS-232 transceivers without PCB layout changes.

Applications

• Battery-powered subnotebook computers
• Personal Digital Assistants (PDAs)
• Hand-held equipment and peripherals
• Cellular phones

Procurement Notes

Verify the specific suffix 'CWP' against official Analog Devices documentation to confirm package type and temperature range. Confirm RoHS compliance status through the manufacturer's latest certification documents. Check for obsolescence notices or product change notifications prior to procurement.

Selection Notes

Select this component for applications requiring low-voltage operation from a single supply between 1.8V and 4.25V. Ensure the system design accommodates the 120kbps maximum data rate. Verify that the SSOP-20 package dimensions fit the target PCB footprint and thermal requirements.

Part Context

The MAX3218 series belongs to Maxim Integrated's family of low-power RS-232 transceivers. It is part of the broader portfolio aimed at portable electronics where power efficiency is critical. The CWP designation typically indicates a specific package variant within the MAX3218 line.

Replacement Considerations

Direct replacements include other MAX3218 variants such as MAX3218CAP+ or MAX3218CPP+. Verify pin compatibility and electrical specifications before substituting.