MAX3238ECPW

Overview

The MAX3238ECPW is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates on a single 3-V to 5.5-V power supply and features ±15-kV electrostatic discharge (ESD) protection on both the data input and output pins. The device integrates five drivers and three receivers, supporting full-duplex communication with a maximum data rate of 250 kbps. It includes a shutdown mode that reduces supply current to typically 2 µA. The component is housed in a 28-pin TSSOP package and is rated for an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates five independent drivers and three independent receivers for multichannel serial communication
• Provides robust ±15-kV ESD protection on all data lines to enhance system reliability
• Features low-power shutdown mode to minimize energy consumption during idle periods
• Operates efficiently from a single 3-V to 5.5-V supply without requiring external charge pumps

Applications

• Industrial control systems requiring reliable serial communication interfaces
• Portable instrumentation and battery-powered devices utilizing low-power operation
• Data acquisition systems connecting multiple sensors via RS-232 protocols
• Embedded systems needing high ESD immunity for harsh environmental conditions

Procurement Notes

Verify the exact suffix 'CPW' against official Texas Instruments documentation to confirm the specific tape-and-reel packaging and moisture sensitivity level. Ensure the procurement channel provides valid traceability for automotive or industrial grade components. Cross-reference the manufacturer part number with the latest datasheet revision to confirm pinout compatibility and electrical specifications before finalizing orders.

Selection Notes

Select this component when designing systems requiring five transmit and three receive channels within a compact surface-mount footprint. It is suitable for applications demanding high ESD tolerance and low standby current. Compare performance metrics such as data rate and supply voltage range against alternative transceivers if higher throughput or wider temperature ranges are required. Verify that the 28-pin TSSOP package fits the available PCB space constraints.

Part Context

This part belongs to the MAX3238 family of multichannel RS-232 transceivers designed for space-constrained applications. It shares functional similarities with other members like the MAX3238EIPWR but differs in packaging and potentially manufacturing lot details. The family is characterized by its ability to drive multiple serial ports from a single chip, reducing board complexity compared to using individual single-channel transceivers.

Replacement Considerations

Direct replacements include the MAX3238EIPWR for identical functionality in a different package variant. The SN65C3238 series offers comparable performance from Texas Instruments with similar pinouts. Verify electrical parameters and package dimensions before substituting to ensure mechanical and electrical compatibility.