MAX3245EETX+

Overview

The MAX3245EETX+T is a single-supply RS-232 transceiver manufactured by Analog Devices (Maxim Integrated). It features three drivers and five receivers, supporting data rates up to 1Mbps. The device operates on a +3.0V to +5.5V supply with a typical operating current of 1mA and achieves 1μA in shutdown mode via AutoShutdown Plus. It includes ±15kV ESD protection, dual charge pumps requiring four 0.1μF capacitors, and an exposed pad for thermal management. The component is housed in a 36-pin TQFN-EP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown Plus technology 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.
• Enhanced electrostatic discharge protection ensures robustness against high-voltage static events.
• Dedicated INVALID output pin indicates the presence of valid RS-232 signal levels.

Applications

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

Procurement Notes

Verify the specific suffix 'T' corresponds to the reel packaging format required for your assembly line. Confirm that the '+T' designation aligns with lead-free and RoHS compliance standards mandated by your manufacturing facility. Cross-reference the manufacturer's latest documentation to ensure the part number matches the exact revision and package variant needed for your design.

Selection Notes

Select this component when designing systems requiring high-speed 1Mbps RS-232 communication alongside strict power constraints. The integrated AutoShutdown Plus feature makes it suitable for battery-operated applications where minimizing quiescent current during idle periods is critical. Ensure the system architecture can accommodate the necessary external capacitors for the charge pump operation.

Part Context

This device belongs to the MAX3224E/MAX3225E/MAX3244E/MAX3245E family of RS-232 transceivers. While sharing similar core technologies like AutoShutdown Plus and ESD protection, the MAX3245E specifically provides three drivers and five receivers with a 1Mbps data rate guarantee. This distinguishes it from lower-capacity or slower variants within the same product series.

Replacement Considerations

The Exar SP3245ECY-L offers comparable functionality with three drivers, five receivers, and a 1Mbps data rate. Verify compatibility regarding the specific package footprint and the external capacitor requirements for the charge pump circuitry before substituting.