MAX3232IPW

Overview

The MAX3232IPW is a dual-channel RS-232 transceiver manufactured by Texas Instruments, housed in a 16-pin TSSOP package. It operates on a single power supply ranging from 3 V to 5.5 V and supports data rates up to 250 kb/s. The device integrates two drivers and two receivers with full-duplex communication capability. It features ±15 kV ESD protection on all RS-232 lines and requires only four external 0.1 µF capacitors for charge pump operation. Typical supply current is 1 mA, and it functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated dual charge pump circuit enabling operation from a single 3-V to 5.5-V power supply without requiring negative voltage rails.
• Provides robust ±15 kV electrostatic discharge (ESD) protection on all RS-232 signal terminals, including ground.
• Complies with TIA/EIA-232-F interface standards while maintaining low power consumption suitable for battery-operated systems.

Applications

• Connecting asynchronous communication controllers to serial port connectors in computer systems.
• Industrial control equipment requiring reliable serial communication interfaces.
• Portable instrumentation and handheld devices utilizing RS-232 connectivity.

Procurement Notes

Verify the specific suffix 'IPW' corresponds to the TSSOP-16 package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to procurement. Ensure ordering quantities align with standard tape-and-reel specifications if applicable.

Selection Notes

Select this component when designing systems requiring dual RS-232 channels with integrated ESD protection and low standby current. It serves as a direct replacement for legacy MAX3232 variants in the TSSOP-16 form factor. Consider alternative packages such as SOIC-16 or SSOP-16 if board space constraints differ, ensuring thermal performance remains within specified limits.

Part Context

This part belongs to the MAX3232 family of multi-channel RS-232 line drivers and receivers. The IPW suffix specifically denotes the TSSOP-16 surface-mount package variant designed for industrial temperature ranges. It shares functional compatibility with other MAX3232 derivatives while offering distinct physical footprint characteristics for PCB layout optimization.

Replacement Considerations

The SN65C3232 and SN75C3232 are documented high-speed terminal-compatible alternatives within the Texas Instruments portfolio. Verify pinout consistency and electrical parameter alignment before substitution to ensure interface integrity.

FAQ

What is the typical supply current for the MAX3232IPW?

The typical supply current is 1 mA, supporting low-power applications.

Does the MAX3232IPW require negative voltage supplies?

No, the integrated charge pump circuit allows operation from a single positive power supply ranging from 3 V to 5.5 V.

What level of ESD protection does this device offer?

It provides ±15 kV ESD protection on all RS-232 lines, including the ground terminal.