MAX3238EIDB

Overview

The MAX3238EIDB is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates on a single power supply ranging from 3 V to 5.5 V, supporting both 3.3 V and 5 V logic levels. The device integrates five drivers and three receivers for full-duplex communication with a data rate of up to 250 kbps. It features ±15-kV electrostatic discharge (ESD) protection on all inputs and outputs. The component is housed in a 28-pin TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates five independent drivers and three receivers for comprehensive serial communication channels.
• Provides robust ±15-kV ESD protection on I/O pins and logic inputs to enhance system reliability.
• Supports operation across a wide single-supply voltage range of 3 V to 5.5 V.
• Includes a shutdown mode to minimize power consumption during periods of inactivity.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable instrumentation and battery-powered devices utilizing low-power modes.
• Data acquisition systems connecting multiple sensors via RS-232 protocols.

Procurement Notes

Verify the specific suffix IDB corresponds to the TSSOP-28 package variant when sourcing. Confirm that the E-grade designation indicates compliance with the specified -40°C to +85°C operating temperature range. Ensure compatibility with existing PCB footprints designed for 28-pin thin-shrink small-outline packages before procurement.

Selection Notes

Select this component when five transmit and three receive channels are required within a single interface solution. Consider the 250 kbps speed limit for applications not demanding higher baud rates. Evaluate the TSSOP-28 footprint constraints against available board space. Verify that the 3 V to 5.5 V supply range aligns with the target system's power architecture.

Part Context

This part belongs to the MAX3238 family of multichannel RS-232 transceivers. It shares functional similarities with other members like the MAX3238EIPWR but differs in packaging and thermal characteristics. The family is designed to replace legacy multi-chip solutions by integrating multiple transceivers into a compact form factor suitable for dense circuit designs.

Replacement Considerations

The SN65C3238DBR serves as a pin-compatible alternative from Texas Instruments. Verify that the substitute supports the same 250 kbps data rate and ESD protection levels. Check for any differences in capacitor requirements or shutdown threshold voltages between the original and replacement parts.