MAX3226EEAE+

Overview

The MAX3226EEAE+T is a single-driver, single-receiver RS-232 transceiver from the MAX3226E series. It operates on a +3.0V to +5.5V supply and guarantees a data rate of 250kbps. The device features AutoShutdown Plus technology, reducing supply current to 1μA when idle. It includes ±15kV ESD protection on I/O pins and utilizes a dual charge pump requiring only four 0.1μF capacitors. Packaged in SSOP-16, it supports full-duplex communication with a propagation delay of 0.15μs.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption by shutting down internal charge pumps during periods of inactivity.
• Integrated dual charge pump generates required RS-232 voltage levels using minimal external capacitance.
• Enhanced electrostatic discharge protection ensures robustness against high-voltage static events.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and battery-powered equipment
• Hand-held devices and peripherals

Procurement Notes

Verify the specific suffix EEAE corresponds to the SSOP-16 package and -40°C to +85°C temperature range. Confirm RoHS compliance status via the manufacturer's official documentation before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring a single channel of RS-232 communication with low standby power. Ensure the design accommodates the 250kbps maximum data rate and utilizes the recommended 0.1μF external capacitors for the charge pump circuitry.

Part Context

This part belongs to the MAX3224E/MAX3225E/MAX3226E/MAX3227E family of 3V-powered RS-232 interfaces. Unlike the MAX3227E which supports 1Mbps, this variant is optimized for 250kbps operation while maintaining identical power management and protection features within the same package lineup.

Replacement Considerations

MAX3226EAAE+ (SSOP-16, Extended Temp) and MAX3226EEUE+ (TSSOP-16). Verify pinout compatibility and thermal characteristics when substituting packages.

FAQ

How does the AutoShutdown Plus feature reduce power consumption?

It detects inactivity on receiver and transmitter inputs for over 30 seconds, then shuts down the internal charge pumps to achieve a 1μA supply current.

What is the function of the READY output pin?

The READY output asserts high when the internal charge pumps are regulating and the device is ready to begin transmitting RS-232 signals.