MAX3237EIPW

Overview

The MAX3237EIPW is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and supports data rates up to 1 Mbit/s. The device integrates five drivers and three receivers in a full-duplex configuration, compliant with EIA/TIA-232-F and V.28 standards. It utilizes four external 0.1-uF capacitors for charge pumping. Key electrical parameters include a 2-mA typical supply current, 15-kV ESD protection on all lines, and a propagation delay of 0.15 us. It functions within a commercial temperature range of 0°C to +70°C and is housed in a 28-pin TSSOP package.

Feature Summary

• Integrates five independent drivers and three independent receivers for comprehensive serial communication control.
• Features ±15-kV electrostatic discharge (ESD) protection on all RS-232 signal lines to enhance system reliability.
• Includes a shutdown mode that reduces supply current to approximately 10 nA for power conservation.
• Requires only four small external 0.1-uF capacitors, eliminating the need for larger or polarized components.

Applications

• Industrial equipment requiring robust serial communication interfaces.
• Portable battery-powered instruments utilizing low-power RS-232 links.
• Modems and portable computers needing high-density interface solutions.
• Communication systems demanding ESD protection for field durability.

Procurement Notes

Verify the specific suffix 'IPW' corresponds to the 28-TSSOP package and commercial temperature grade when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates. Ensure the ordering part number matches the exact pinout and electrical specifications required for the design. Cross-reference datasheet revisions to confirm feature consistency.

Selection Notes

Select this component when five drivers and three receivers are necessary within a single IC footprint. It is suitable for designs operating between 3 V and 5.5 V where low quiescent current is critical. Compare against the MAX3232 if fewer channels are sufficient, as it offers lower current consumption. Verify that the TSSOP-28 package fits the PCB layout constraints compared to SOIC alternatives.

Part Context

This part belongs to the MAX3237 family of true RS-232 transceivers designed for low-voltage operation. It shares functional similarities with other Maxim Integrated and Texas Instruments RS-232 devices but distinguishes itself through its specific channel count and ESD protection levels. The 'E' suffix typically denotes extended or enhanced features such as higher ESD ratings compared to standard variants.

FAQ

What is the maximum data rate supported by the MAX3237EIPW?

The device supports data rates up to 1 Mbit/s.

How many external capacitors are required for operation?

Four external 0.1-uF capacitors are required for the charge pump circuit.

Does the MAX3237EIPW include ESD protection?

Yes, it provides ±15-kV ESD protection on all RS-232 signal lines per IEC 1000-4-2.