MAX3243EAI+TG1Z

Overview

The MAX3243EAI+TG1Z is a true RS-232 transceiver manufactured by Analog Devices/Maxim Integrated, housed in a 28-pin SSOP package. It operates from a single +3.0V to +5.5V supply and features three drivers and five receivers with full-duplex communication capability. The device achieves a typical maximum data rate of 235kbps and includes an integrated dual charge pump requiring only 0.1µF capacitors for 3.3V operation. It incorporates AutoShutdown technology, reducing supply current to 1µA when no valid signal is detected on receiver inputs for 30µs. The component provides ±15kV ESD protection and functions within a temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown feature reduces power consumption by shutting down the onboard power supply and drivers when no valid RS-232 signal is present on receiver inputs for 30µs.
• Integrated high-efficiency dual charge-pump power supply eliminates the need for external ±12V supplies, operating directly from a single +3.0V to +5.5V source.
• Includes a complementary always-active receiver output (R2OUTB) that allows monitoring of external devices without forward-biasing other logic during shutdown states.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and RoHS compliance status. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the procurement channel sources genuine components to avoid counterfeit risks associated with interface ICs.

Selection Notes

Select this component for applications requiring low-power standby modes via AutoShutdown and compatibility with standard RS-232 protocols. Verify that the system logic voltage aligns with the supported 3.3V or 5V ranges. Consider the 28-pin SSOP footprint constraints during PCB layout design.

Part Context

This part belongs to the MAX3221/MAX3223/MAX3243 family of 3V-powered RS-232 transceivers. While sharing core functionality like AutoShutdown and charge-pump architecture, it differs from siblings like the MAX3223 by offering three drivers and five receivers in a 28-pin configuration rather than two drivers and two receivers.

Replacement Considerations

Public confirmed substitute part numbers include V62-06624-01XE and V62-06624-01YE, which are enhanced product versions available from Texas Instruments.