MAX221CAE+T

Overview

The MAX221CAE+T is a single transmit/receive RS-232 transceiver powered by a +5V supply. It features an AutoShutdown function that reduces the supply current to 1µA when no valid signal is detected. The device supports data rates up to 250kbps and operates within a temperature range of 0°C to +70°C. It is housed in a 16-pin SSOP package.

Feature Summary

• AutoShutdown functionality for low-power operation
• Single-channel RS-232 transceiver design
• Integrated dual charge-pump voltage converter

Applications

• Maintenance and diagnostic ports
• Industrial systems
• Telecommunications equipment
• Set-top boxes

Procurement Notes

Verify the specific suffix 'AE' indicates the commercial temperature grade (0°C to +70°C) and the 'SSOP' package type. Confirm the '+T' designation corresponds to tape-and-reel packaging as specified in the manufacturer's ordering information table before finalizing procurement orders.

Selection Notes

Select this component for applications requiring minimal board space and ultra-low standby power consumption. Ensure the system can tolerate the typical 100µs wake-up time associated with the AutoShutdown feature. Verify that external capacitors are rated for the required ripple performance at operating temperatures.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered, multichannel RS-232 drivers and receivers. These devices are designed for EIA/TIA-232E and V.28/V.24 communications interfaces where ±12V supplies are unavailable. The MAX221 specifically provides a single channel solution with integrated power management capabilities.

Replacement Considerations

The MAX221EAE+T serves as a direct functional replacement offering extended industrial temperature ratings (-40°C to +85°C). Both parts share identical pinouts and electrical characteristics, differing primarily in their specified operating temperature ranges.