MAX3232ECPW

Overview

The MAX3232ECPW is an automotive-grade RS-232 transceiver manufactured by Texas Instruments. It operates on a single 3V to 5.5V supply and supports data rates up to 250kbit/s with a maximum slew rate of 30V/μs. The device integrates two drivers and two receivers, featuring ±15kV IEC ESD protection on all serial port pins. Typical standby current is 300μA. It utilizes four external 0.1μF capacitors for charge pump operation. The component is housed in a 16-pin TSSOP (PW) package measuring 5mm x 6.4mm. Recommended operating temperature ranges from -40°C to +85°C.

Feature Summary

• Qualified for automotive applications meeting specific reliability standards
• Provides ±15kV IEC ESD protection on serial-port connection pins including ground
• Accepts 5V logic inputs while operating from a 3.3V supply
• 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 devices

Procurement Notes

Verify that the ordering suffix corresponds to the exact package type and temperature grade required for your design. Confirm RoHS compliance and lead finish specifications against the latest Package Option Addendum. Ensure the source document matches the specific automotive qualification status indicated by the part number prefix.

Selection Notes

Select this component when automotive qualification and robust ESD protection are mandatory. Verify that the system voltage falls within the 3V to 5.5V range. Check if the 250kbit/s speed meets interface requirements or if a higher-speed pin-compatible alternative is needed. Ensure sufficient board space for the required four external capacitors.

Part Context

This device belongs to the MAX3232 family of multichannel RS-232 line drivers and receivers. The 'E' designation indicates extended industrial temperature performance, while the '-Q1' suffix denotes automotive qualification. It serves as a low-power solution for serial communication interfaces in harsh environments requiring high noise immunity.

Replacement Considerations

The SNx5C3232 is a documented pin-compatible alternative offering higher data rates up to 1Mbit/s. Catalog versions like the MAX3232E may be suitable if automotive qualification is not required. Verify thermal resistance and package dimensions before substitution.