MAX3318ECUP+T

Overview

The MAX3318ECUP+T is a dual-transmitter, dual-receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +2.25V to +3.0V supply and achieves a guaranteed data rate of up to 460kbps using a proprietary low-dropout transmitter output stage and a dual charge pump. The device incorporates AutoShutdown Plus technology, reducing the supply current to 1µA when idle for over 30 seconds. It features a READY logic-level output indicating charge pump regulation status and an INVALID output detecting valid RS-232 signal levels. The component is housed in a 20-pin TSSOP package.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption during periods of inactivity without requiring BIOS or operating system modifications.
• Integrated dual charge pumps generate necessary voltage levels from a single low-voltage supply, eliminating the need for external voltage triplers.
• Logic-level outputs provide system status information, including READY for charge pump regulation and INVALID for receiver input condition monitoring.

Applications

• Palmtop Computers
• Hand-Held Instruments
• GPS Systems

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm exact package type and temperature range. Confirm that the '+T' designation corresponds to the intended reel packaging format. Cross-reference the manufacturer part number with authorized distributor catalogs to ensure authenticity and traceability before finalizing procurement.

Selection Notes

Select this component for applications requiring RS-232 communication at low supply voltages between 2.25V and 3.0V. It is suitable for designs prioritizing minimal power consumption through automatic shutdown features. Ensure the application environment falls within the specified -40°C to +85°C temperature range and utilizes a 20-pin TSSOP footprint.

Part Context

This device belongs to the MAX3316–MAX3319 family of 2.5V, 1µA, 460kbps RS-232-compatible transceivers. The MAX3318 specifically provides two transmitters and two receivers. Other family members include the MAX3316 (2-Tx/2-Rx), MAX3317 (2-Tx/2-Rx with manual shutdown), and MAX3319 (1-Tx/1-Rx).

Replacement Considerations

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