MAX3238CPWRG4

Overview

The MAX3238CPWRG4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V power supply and features integrated charge pumps for generating the required voltages. The device provides +/-15-kV electrostatic discharge (ESD) protection on all RS-232 transceiver pins according to Human Body Model standards. It includes five drivers and three receivers, supporting data rates up to 1 Mbit/s. The component is housed in a 28-pin TSSOP package and is rated for operation over an industrial temperature range of -40°C to +85°C.

Feature Summary

• Multichannel RS-232 interface with five drivers and three receivers
• Integrated charge pump eliminates external capacitor requirements
• Robust +/-15-kV ESD protection on all signal lines
• Single-supply operation compatible with 3-V and 5-V systems

Applications

• Industrial control systems requiring reliable serial communication
• Portable instrumentation and medical devices
• Modems and fax machines
• Data acquisition systems

Procurement Notes

Verify the exact part number suffix against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering code matches the specific package variant and temperature grade required for the design. Cross-reference the RoHS compliance status and lead time directly with authorized distributors or the manufacturer before placing orders.

Selection Notes

Select this component when a multichannel RS-232 solution is needed with high ESD immunity. Compare channel count and data rate requirements against similar devices like the MAX3237 or TRS3232. Verify that the 28-pin TSSOP package fits the board layout constraints. Confirm that the operating voltage range aligns with the system's power supply architecture.

Part Context

This part belongs to the MAX323x family of RS-232 transceivers designed for low-power applications. It shares functional similarities with other multichannel devices in the series but offers specific channel configurations. The 'C' suffix typically denotes the commercial/industrial temperature range, while 'PWR' indicates the TSSOP package type. The 'G4' suffix often relates to specific manufacturing or compliance updates within the product lifecycle.

Replacement Considerations

Direct replacements include the MAX3238EIPWR and MAX3238IDB. Check datasheets for pin-to-pin compatibility and ensure equivalent ESD protection levels. Verify that alternative parts support the same data rates and supply voltage ranges. Consider package availability and lead times when substituting.