MAX3221EUE+TG1Z

Overview

The MAX3221EUE+TG1Z is a single-driver, single-receiver RS-232 transceiver in a 16-pin TSSOP package. It operates from a +3.0V to +5.5V supply and achieves 1µA standby current via AutoShutdown. The device supports data rates up to 235kbps with ±5.0V output swings. It includes integrated dual charge pumps requiring only four 0.1µF capacitors for operation. ESD protection reaches ±15kV on all pins.

Feature Summary

• AutoShutdown feature reduces supply current to 1µA when no valid signal is detected on receiver inputs for 30µs
• Integrated dual charge pump generates true RS-232 voltages from a single low-voltage supply without external transformers
• Enhanced electrostatic discharge protection rated at ±15kV using Human Body Model and IEC 1000-4-2 standards

Applications

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

Procurement Notes

Verify the specific suffix TG1Z against official manufacturer documentation to confirm tape-and-reel packaging and RoHS compliance status. Confirm that the component meets the required temperature range specifications for your intended operating environment before finalizing procurement orders.

Selection Notes

Select this component for applications requiring minimal power consumption during idle periods due to its automatic shutdown capability. Ensure the design accommodates the necessary four external capacitors for the internal charge pump circuitry. Verify compatibility with the host system's logic voltage levels within the specified 3.0V to 5.5V operating range.

Part Context

This part belongs to the MAX3221/MAX3223/MAX3243 family of 3V-powered RS-232 transceivers. While the MAX3223 offers two drivers and receivers, and the MAX3243 provides three drivers and five receivers, the MAX3221 specifically provides a single driver and receiver configuration suitable for basic point-to-point serial communication links.

Replacement Considerations

MAX3221EEAE+

FAQ

How does the AutoShutdown feature function?

When valid signal levels are not present on any receiver input for 30µs, the internal power supply and drivers shut down, reducing supply current to 1µA. The system reactivates upon detection of a valid RS-232 level.

What is the maximum guaranteed data rate?

The datasheet guarantees a data rate of 120kbps under worst-case load conditions (3kΩ parallel with 1000pF). Typical operation can support rates up to 235kbps.