MAX3245ECAI+TG1Z

Overview

The MAX3245ECAI+TG1Z is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features three drivers and five receivers, supporting full-duplex communication at data rates up to 1Mbps. The device operates on a single +3.0V to +5.5V supply and achieves a typical supply current of 1μA through AutoShutdown Plus technology. It includes ±15kV ESD protection on all inputs and outputs. The component is housed in a 28-pin SSOP package and is rated for an operating temperature range of 0°C to +70°C.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption when the interface is idle or disconnected.
• Integrated dual charge pump generates internal voltage rails from a single low-voltage supply.
• High electrostatic discharge protection ensures robustness against air-gap and contact discharge events.

Applications

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

Procurement Notes

Verify the specific ordering suffixes against official manufacturer documentation to confirm package type, temperature grade, and lead-free status. Confirm availability with authorized distributors as stock levels fluctuate. Ensure the procurement channel provides valid traceability and authenticity guarantees for integrated circuits.

Selection Notes

Select this model for applications requiring high-speed 1Mbps RS-232 communication within space-constrained portable electronics. The 28-pin SSOP package suits designs needing multiple receiver channels. Verify that the system environment remains within the specified commercial temperature limits during operation.

Part Context

This component belongs to the MAX3245E series of RS-232 transceivers designed for low-power mobile systems. It shares functional similarities with other members of the family but is distinguished by its specific driver/receiver count and guaranteed data rate capabilities.

Replacement Considerations

Compatible alternatives include the MAX3244E for lower data rate requirements and the MAX3241E for legacy compatibility. Verify pinout and electrical specifications before substitution.

FAQ

How does the AutoShutdown Plus feature function?

It detects inactivity on receiver and transmitter inputs for over 30 seconds, shutting down the charge pumps to reduce supply current to approximately 1μA until activity resumes.

What is the purpose of the INVALID output?

The INVALID output indicates whether valid RS-232 voltage levels are present on the receiver inputs, remaining independent of the shutdown control states.

Can unused transmitter inputs be left floating?

No, unused transmitter inputs should be connected to GND or VCC to prevent undefined states.