MAX3245EEAI+T

Overview

The MAX3245EEAI+T is a single-supply 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 from a +3.0V to +5.5V supply with a typical shutdown current of 1µA enabled by AutoShutdown Plus technology. It utilizes a dual charge pump requiring four small capacitors for voltage conversion. The component is housed in a 28-pin SSOP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown Plus technology automatically reduces supply current to 1µA when the interface is idle or disconnected, waking upon valid signal transitions without BIOS changes.
• MegaBaud operation guarantees 1Mbps data rates for high-speed applications such as ISDN modem communications.
• Integrated INVALID output detects valid RS-232 receiver levels independent of shutdown states, enabling power management control.

Applications

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

Procurement Notes

Verify the specific suffix EEAI+T against the manufacturer's official ordering guide to confirm the extended temperature range (-40°C to +85°C) and SSOP-28 packaging. Ensure compatibility with required capacitor values for the target supply voltage, as charge pump performance depends on external components. Confirm RoHS compliance status through the latest datasheet revision.

Selection Notes

Select this component for systems requiring low-power standby modes and high-speed serial communication over a single supply voltage. The MAX3245 variant is appropriate where five receiver inputs are necessary compared to the MAX3244's three. Consider the 28-pin SSOP footprint for space-constrained designs. Verify that the 1µA shutdown current meets system battery life requirements during cable disconnection periods.

Part Context

The MAX3245 belongs to the MAX3224–MAX3245 family of EIA/TIA-232 interfaces featuring AutoShutdown Plus. It shares architectural similarities with the MAX3244 but provides additional receiver channels. The 'E' designation indicates the extended industrial temperature range, while 'AI' specifies the SSOP-28 package type. This part integrates the functionality of level translation, charge pumping, and intelligent power management into a single IC.

Replacement Considerations

Public confirmed substitute part numbers: MAX3245ECAI+T, MAX3245EAI+, MAX3245EEUI+T.