MAX3223EAP+T

Overview

The MAX3223EAP+T is a dual driver/receiver RS-232 transceiver in a 20-pin SSOP package. It operates from a single +3.0V to +5.5V supply and achieves 1µA supply current via AutoShutdown when no valid signal is detected on receiver inputs for 30µs. The device guarantees a 120kbps data rate with worst-case loads of 3kΩ parallel 1000pF, typically supporting up to 235kbps. Internal dual charge pumps generate ±5.5V using only four 0.1µF capacitors at 3.3V operation. Transmitter outputs provide ±5.0V swing, and the INVALID pin indicates active shutdown status.

Feature Summary

• AutoShutdown feature reduces supply current to 1µA when no valid RS-232 signal is present on receiver inputs for 30µs
• Integrated dual charge pump generates internal ±5.5V supplies from a single +3.0V to +5.5V input
• Transmitters and receivers are enabled automatically upon detection of valid RS-232 signal levels

Applications

• Battery-powered equipment
• Hand-held equipment
• Portable diagnostics equipment

Procurement Notes

Verify the component matches the exact part number MAX3223EAP+T. Confirm the manufacturer is Analog Devices Inc./Maxim Integrated. Ensure the package type is 20-pin SSOP and the temperature range is -40°C to +85°C. Check datasheet specifications against actual requirements before integration.

Selection Notes

Select this component for applications requiring low power consumption during idle states. The AutoShutdown function eliminates the need for external software control to manage power states. Verify that the required data rate does not exceed 235kbps under typical conditions. Ensure the system operates within the specified voltage range of +3.0V to +5.5V.

Part Context

This component belongs to the MAX3221/MAX3223/MAX3243 family of +3V to +5.5V RS-232 transceivers with AutoShutdown. The MAX3223 specifically provides two drivers and two receivers in a 20-pin package. It shares core features like integrated charge pumps and low-power shutdown modes with the single-driver MAX3221 and the three-driver MAX3243.

Replacement Considerations

MAX3223CAP is a commercial grade version (0°C to +70°C) with identical electrical characteristics but a narrower operating temperature range.