MAX3244ECAI

Overview

The MAX3244ECAI+ is a 3.0V to 5.5V RS-232 transceiver featuring AutoShutdown Plus technology, which reduces supply current to 1μA when idle. It provides three drivers and five receivers with a guaranteed data rate of 250kbps. The device includes ±15kV ESD protection on all I/O pins and utilizes a dual charge pump requiring only four 0.1μF capacitors. It operates in the -40°C to +85°C temperature range within a 28-pin SSOP package.

Feature Summary

• AutoShutdown Plus functionality automatically enters low-power shutdown mode after 30 seconds of inactivity and wakes upon signal detection.
• Integrated dual charge pump generates required voltage levels using minimal external capacitance.
• Enhanced electrostatic discharge protection rated at ±15kV via Human Body Model and Air-Gap Discharge.

Applications

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

Procurement Notes

Verify the specific suffix 'CAI' against official manufacturer documentation to confirm the exact pinout, lead-free status, and package dimensions. Confirm that the component meets RoHS compliance requirements for your target assembly process before finalizing procurement orders.

Selection Notes

Select this component for applications requiring multiple receiver lines alongside standard transmission capabilities. Ensure the design accommodates the 250kbps maximum data rate limitation rather than the 1Mbps capability found in the MAX3245E variant. Verify that the 28-pin SSOP footprint aligns with the PCB layout constraints.

Part Context

This part belongs to the MAX3224E/MAX3225E/MAX3226E/MAX3227E/MAX3244E/MAX3245E family of RS-232 transceivers manufactured by Analog Devices/Maxim Integrated. These devices share common features such as AutoShutdown Plus and low-voltage operation but differ in driver/receiver counts and maximum data rates.

Replacement Considerations

The MAX3245EEAI+ serves as a functional substitute offering identical pinouts and features but supports up to 1Mbps data rates instead of 250kbps. Other family members like the MAX3224E provide fewer drivers and receivers.