MAX3232EIDBE4

Overview

The MAX3232EIDBE4 is an automotive-grade RS-232 transceiver manufactured by Texas Instruments. It integrates two drivers and two receivers with a dual charge-pump circuit, enabling operation from a single 3V to 5.5V supply. The device supports data rates up to 250kbit/s and features ±15kV IEC ESD protection on serial-port connection pins. It operates within a temperature range of -40°C to +85°C and consumes a typical standby current of 300μA. The component utilizes four external 0.1μF capacitors for voltage generation and is housed in a TSSOP-16 (PW) package.

Feature Summary

• Qualified for automotive applications meeting specific reliability standards
• Provides ±15kV IEC ESD protection on all serial-port connection pins including ground
• Accepts 5V logic inputs while operating with a 3.3V supply voltage
• Pin-compatible with alternative high-speed devices such as the SNx5C3232

Applications

• Industrial PCs
• Wired networking equipment
• Data center and enterprise computing systems
• Battery-powered portable systems

Procurement Notes

Verify that the ordering suffix 'E4' corresponds to the specific lead finish or environmental compliance designation required for your assembly process. Confirm the package type matches the intended PCB footprint. Ensure the automotive qualification status aligns with your system's reliability requirements before finalizing procurement.

Selection Notes

Select this component when automotive qualification and robust ESD protection are mandatory. It is suitable for designs requiring 3.3V or 5V logic interfacing with RS-232 ports. Consider the SNx5C3232 if higher data rates exceeding 250kbit/s are needed, as it offers pin compatibility with increased speed capabilities.

Part Context

This part belongs to the MAX3232E-Q1 family, which represents the automotive-qualified version of the standard MAX3232E series. While functionally identical to the commercial grade, it undergoes stricter manufacturing controls to meet automotive industry standards. It serves as a bridge between microcontrollers and serial connectors in harsh environments.

Replacement Considerations

The SNx5C3232 is a pin-compatible alternative offering higher data rates up to 1Mbit/s. Standard catalog versions like the MAX3232E may be used if automotive qualification is not required. Verify that any substitute maintains the same ESD protection levels and voltage ranges.