MAX3318EUP+T

Overview

The MAX3318EUP+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 460kbps using a proprietary low-dropout transmitter output stage and a dual charge pump. The device requires only four 0.1µF capacitors for operation. It features AutoShutdown Plus technology, reducing supply current to 1µA when inputs are inactive for over 30 seconds. The component includes a READY logic-level output indicating charge pump regulation status and an INVALID output detecting valid RS-232 signal levels.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption during inactivity without requiring BIOS or operating system modifications.
• Proprietary low-dropout transmitter output stage enables RS-232-compatible performance at low supply voltages down to 2.25V.
• Integrated dual charge pump voltage converter generates necessary internal supply rails using minimal external capacitance.
• Logic-level outputs provide system status information regarding charge pump readiness and receiver input validity.

Applications

• Palmtop Computers
• Hand-Held Instruments
• GPS Systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Ensure compatibility with the target application's voltage requirements and interface standards before procurement.

Selection Notes

Select this component for applications requiring low-voltage operation and automatic power management. Verify that the system supports the required 0.1µF capacitor configuration for the internal charge pumps.

Part Context

This part belongs to the MAX3316–MAX3319 family of 2.5V RS-232-compatible transceivers. The MAX3318 variant specifically provides two transmitters and two receivers with integrated AutoShutdown Plus capabilities for enhanced power efficiency.

Replacement Considerations

Public confirmed substitute part numbers: MAX3318CAP, MAX3318EAP.