MAX3232EIPWE4

Overview

The MAX3232EIPWE4 is an automotive-grade RS-232 transceiver manufactured by Texas Instruments. It integrates two line drivers, two receivers, and a dual charge-pump circuit within a 16-pin TSSOP (PW) package. The device 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. It provides ±15kV IEC ESD protection across all serial-port connection pins, including ground. The typical standby current is 300μA, and it requires four external capacitors for the charge pump operation.

Feature Summary

• Automotive qualification meeting AEC-Q100 standards
• Integrated dual charge pump requiring only four small external capacitors
• Full ±15kV IEC electrostatic discharge protection on all interface pins

Applications

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

Procurement Notes

Verify that the 'E4' suffix indicates lead-free manufacturing compliant with RoHS directives. Confirm the specific tape-and-reel quantity matches production requirements. Ensure the component status remains active for long-term supply continuity. Validate that the automotive grade meets the specific reliability targets of the target application environment.

Selection Notes

Select this variant when automotive reliability certification is mandatory. The standard catalog version lacks the formal automotive qualification. Verify that the 250kbit/s speed limit satisfies the system communication requirements. Ensure the design accommodates the required four external capacitors for the internal charge pump functionality.

Part Context

This part belongs to the MAX3232 family of RS-232 transceivers. The 'E' designation typically denotes industrial temperature range performance, while the '-Q1' suffix in the datasheet title confirms its automotive qualification. The 'E4' suffix specifically identifies the lead-free material composition and environmental compliance status of the package.

Replacement Considerations

SNx5C3232 is a pin-compatible alternative offering higher speeds up to 1Mbit/s. TRS3232E is another compatible option within the manufacturer's portfolio. Verify voltage levels and ESD specifications when substituting these parts.