MAX3319EAE+T

Overview

The MAX3319EAE+T is a single-channel RS-232 transceiver designed for operation from a +2.25V to +3.0V supply. It features AutoShutdown Plus technology, reducing supply current to 1µA when idle and 300µA during operation. The device supports data rates up to 460kbps with a guaranteed slew rate of 4V/µs. It utilizes a dual charge pump requiring only four 0.1µF capacitors. The component includes a READY output indicating charge pump regulation status and an INVALID output detecting valid RS-232 levels. It operates within a temperature range of -40°C to +85°C and is housed in a 16-pin SSOP package.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption by entering low-power shutdown mode when the RS-232 cable is disconnected or peripherals are inactive for over 30 seconds.
• Proprietary low-dropout transmitter output stage enables RS-232-compatible performance at low voltages using a dual-charge pump system.
• Integrated logic-level outputs provide system status: READY indicates charge pump regulation readiness, while INVALID detects valid RS-232 voltage levels on receiver inputs.

Applications

• Palmtop Computers
• Hand-Held Instruments
• GPS Devices

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with existing BIOS or operating systems, as the AutoShutdown Plus feature operates transparently without software modifications. Confirm capacitor requirements match the datasheet specifications for optimal performance.

Selection Notes

Select this component for applications requiring minimal external capacitance and ultra-low power consumption in portable devices. The MAX3319 is suitable where space constraints limit the use of larger packages or additional voltage regulators. Consider the 1µA shutdown current for battery-operated systems that require automatic power management without complex control logic.

Part Context

This part belongs to the MAX3316–MAX3319 family of 2.5V RS-232 transceivers manufactured by Analog Devices / Maxim Integrated. While other members like the MAX3316 offer two channels, the MAX3319 provides a single transmitter and receiver configuration. This family shares common features such as the dual charge pump and low-voltage operation capabilities.

Replacement Considerations

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