MAX3224EPP

Overview

The MAX3224EPP is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, designed for EIA/TIA-232 and V.28/V.24 communication interfaces. It operates within a supply voltage range of 3.0V to 5.5V and supports data rates up to 1Mbps. The device features AutoShutdown Plus technology, achieving a typical supply current of 1µA in shutdown mode when the cable is disconnected or inputs are inactive for over 30 seconds. It includes two drivers and two receivers with full-duplex operation. The component is housed in a 20-pin PDIP package and provides ±15kV ESD protection on all pins.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption by entering low-power mode during idle periods or cable disconnection without requiring BIOS modifications.
• Integrated charge pump circuitry generates internal voltages from a single 3V to 5.5V supply, eliminating the need for external dual-voltage sources.
• Robust electrostatic discharge protection rated at ±15kV on all RS-232 signal lines ensures reliability in high-interference environments.

Applications

• Portable computers and notebook PCs requiring low-power serial communication interfaces.
• Industrial control systems utilizing RS-232 modems or remote I/O devices.
• Medical equipment needing reliable serial data transmission with minimal standby power draw.

Procurement Notes

Verify the specific suffix 'EPP' corresponds to the 20-pin PDIP package and commercial/industrial temperature range as defined in the official datasheet. Confirm RoHS compliance status if required by project specifications. Ensure the source document explicitly lists the MAX3224EPP part number to avoid confusion with similar variants like MAX3223 or MAX3221 which may have different pinouts or electrical characteristics.

Selection Notes

Select this component when designing systems that require full-duplex RS-232 communication with strict power management constraints. It is suitable for applications where the interface remains idle for extended periods, leveraging the AutoShutdown feature. Compare against MAX3223 or MAX3221 if lower data rates or different driver/receiver configurations are sufficient for the specific application requirements.

Part Context

The MAX3224 belongs to the Maxim Integrated family of 3V-powered RS-232 transceivers. This series distinguishes itself through the integration of AutoShutdown Plus, a proprietary feature that dynamically manages power states. Unlike standard transceivers that remain active, this device optimizes battery life in portable electronics by detecting line activity and UART state changes to toggle between active and shutdown modes seamlessly.

Replacement Considerations

Publicly confirmed substitutes include the MAX3223EPP and MAX3221EPP. Verify compatibility regarding data rate limits and driver/receiver counts, as these variants may offer different performance profiles while maintaining the same 20-pin PDIP footprint and pinout structure.