MAX3238EAI+T

Overview

The MAX3238EAI+T is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin SSOP package. It operates on a single +3.0V to +5.5V supply and features five drivers and three receivers for full-duplex communication. The device supports data rates up to 250kbps with a guaranteed 6V/µs slew rate. It incorporates AutoShutdown Plus technology, reducing supply current to 1µA when no signal transitions are detected for 30 seconds. The component includes an INVALID output for valid signal detection and R1OUTB for continuous monitoring.

Feature Summary

• AutoShutdown Plus functionality reduces power consumption by shutting down internal supplies upon detecting inactivity.
• Integrated dual charge-pump power supply generates required RS-232 voltage levels from a single low-voltage source.
• R1OUTB provides an always-active complementary receiver output for external device monitoring during shutdown states.

Applications

• Notebook, subnotebook, and palmtop computers
• High-speed modems
• Battery-powered equipment

Procurement Notes

Verify the specific suffix 'EAI' confirms the extended temperature range of -40°C to +85°C and the SSOP-28 surface-mount package. Confirm the '+T' designation indicates tape-and-reel packaging suitable for automated assembly processes. Cross-reference the manufacturer's latest documentation to ensure compliance with current RoHS directives and material declarations before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring low-power RS-232 connectivity in battery-operated portable devices. Ensure the system logic voltage aligns with the 3.0V to 5.5V operating range. Verify that the required data rate does not exceed 250kbps under maximum load conditions. Consider the space-saving SSOP package dimensions if board real estate is constrained within notebook or handheld form factors.

Part Context

This part belongs to the MAX3238E series of multichannel RS-232 line drivers and receivers. It is designed as a complete serial port solution intended for notebook and subnotebook computer applications. The device integrates proprietary high-efficiency charge pumps to deliver true RS-232 performance from a single low-voltage supply without requiring external components other than small capacitors.

Replacement Considerations

MAX3238EEAI+T