MAX232EINE4

Overview

The MAX232EINE4 is a dual driver and receiver integrated circuit manufactured by Texas Instruments, designed for TIA/EIA-232-F and ITU V.28 communication interfaces. It operates from a single 5V power supply (4.5V to 5.5V) with a typical supply current of 10mA. The device supports data rates up to 250kbit/s and includes two drivers and two receivers. It features robust ESD protection on RS-232 bus pins, rated at ±15kV Human-body model and ±15kV IEC61000-4-2 air-gap discharge. The component is housed in a 16-pin PDIP package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated capacitive voltage generator enables operation from a single 5V supply without external negative voltage rails.
• High electrostatic discharge protection on all RS-232 bus pins ensures reliability in harsh environments.
• Receivers provide fail-safe functionality, outputting high logic levels when inputs are open or shorted.

Applications

• TIA/RS-232-F compliant serial communication systems
• Battery-powered portable devices requiring low supply current
• Industrial terminals and modems
• Computer serial port interfacing

Procurement Notes

Verify the specific ordering suffix 'INE4' against the latest TI Package Option Addendum to confirm active production status and lead finish specifications. Ensure that the procurement channel provides documentation confirming RoHS compliance and material type consistency with the datasheet requirements.

Selection Notes

Select this component when designing systems requiring full-duplex RS-232 communication with enhanced ESD immunity. It is suitable for applications where a single 5V logic supply is available, eliminating the need for complex charge pump capacitor networks found in older generations. Verify that the required data rate does not exceed 250kbit/s.

Part Context

This part belongs to the MAX232E family, which distinguishes itself from standard MAX232 variants through integrated IEC61000-4-2 ESD protection. While the standard MAX232 requires external components for basic operation, the MAX232E series incorporates internal protection structures on the RS-232 lines, simplifying layout and improving system robustness against static discharge events.

Replacement Considerations

MAX232EIN serves as the non-RoHS equivalent. MAX232EIDR and MAX232EIDRG4 offer surface-mount SOIC alternatives with identical electrical characteristics but different packaging.