MAX3245ECAI

Overview

The MAX3245ECAI+T is a single-supply RS-232 transceiver featuring AutoShutdown Plus and MegaBaud operation. It provides three drivers and five receivers with full-duplex communication capabilities. The device operates from a +3.0V to +5.5V supply, achieving a typical shutdown current of 1µA. It guarantees data rates up to 1Mbps with ±5V transmitter output swings. The component utilizes a dual charge pump requiring four 0.1µF capacitors for 3.3V operation. It is housed in a 28-pin SSOP package and supports an industrial temperature range.

Feature Summary

• AutoShutdown Plus technology automatically reduces supply current when the interface is idle or disconnected.
• MegaBaud capability ensures reliable high-speed data transmission at rates up to 1Mbps.
• Integrated INVALID output detects valid RS-232 signal levels on receiver inputs.
• Proprietary low-dropout transmitter stage enables true RS-232 performance from low-voltage supplies.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and handheld equipment
• Battery-powered peripherals and printers

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature rating. Ensure compatibility with existing BIOS or operating system configurations if utilizing AutoShutdown Plus features. Confirm that external capacitor values meet the minimum requirements specified in the datasheet for stable charge pump operation.

Selection Notes

Select this component for applications requiring low power consumption during idle states without software intervention. The MAX3245 is suitable for systems needing multiple receiver lines and high-speed data transfer. Consider the 28-pin SSOP footprint for space-constrained designs. Verify that the supply voltage range aligns with the system's power architecture.

Part Context

This device belongs to the MAX3224–MAX3227/MAX3244/MAX3245 family of single-supply RS-232 transceivers. It shares core functionalities such as AutoShutdown Plus and dual charge pumps with siblings like the MAX3244. Differences primarily involve guaranteed data rates and driver/receiver counts within the series.

Replacement Considerations

The MAX3244E is a compatible alternative within the same family, offering identical functionality but with a guaranteed 250kbps data rate instead of 1Mbps. Both devices share similar pinouts and operational characteristics.