MAX3245EAI+

Overview

The MAX3245EAI+ is a single-supply RS-232 transceiver from Analog Devices/Maxim Integrated, featuring three drivers and five receivers in a 28-pin SSOP package. It supports full-duplex communication with a guaranteed data rate of 1Mbps. The device operates on a supply voltage range of 3.0V to 5.5V and achieves a typical supply current of 1µA through AutoShutdown Plus technology. This feature automatically reduces power consumption when the cable is disconnected or inputs remain inactive for over 30 seconds. The internal dual charge pump requires only four small capacitors for operation.

Feature Summary

• AutoShutdown Plus functionality enables ultra-low power consumption by automatically entering shutdown mode during periods of inactivity.
• MegaBaud operation guarantees high-speed data transmission up to 1Mbps for demanding applications.
• Integrated INVALID output provides real-time detection of valid RS-232 signal levels at receiver inputs.
• Proprietary low-dropout transmitter stage ensures true RS-232 performance across the entire operating voltage range.

Applications

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

Procurement Notes

Verify the component against official datasheets to confirm pin compatibility and electrical specifications before integration. Ensure that the ordering suffix matches the required temperature range and packaging format. Cross-reference manufacturer documentation to validate RoHS compliance and lead-free status for your specific manufacturing requirements.

Selection Notes

Select this model for designs requiring high-speed serial communication with minimal power drain. The 1Mbps data rate distinguishes it from lower-speed variants like the MAX3244. Consider the 28-pin SSOP footprint for space-constrained layouts. Verify that external capacitor values align with the chosen supply voltage to maintain stable charge pump regulation.

Part Context

This component belongs to the MAX3224–MAX3227/MAX3244/MAX3245 family of EIA/TIA-232 interfaces. It shares core features such as AutoShutdown Plus and dual charge pumps with siblings like the MAX3244, but offers superior data rates. The family targets portable electronics where battery life and communication speed are critical design constraints.

Replacement Considerations

Public confirmed substitute part numbers: MAX3245ECAI+, MAX3245EEUI+, MAX3245EEAI+T.