MAX232EIDWR

Overview

The MAX232EIDWR is a dual RS-232 driver and receiver manufactured by Texas Instruments, designed for EIA/TIA-232-F communication standards. It operates within a supply voltage range of 4.5 V to 5.5 V, with a typical operating voltage of 5 V. The device supports data rates up to 250 kb/s and features full-duplex transmission capabilities. It integrates two drivers and two receivers in a single package. The component functions reliably across an extended industrial temperature range from -40°C to +85°C. Power consumption is characterized by a maximum operating supply current of 10 mA. It utilizes a 16-pin SOIC surface-mount package.

Feature Summary

• Integrates dual drivers and dual receivers for complete RS-232 signal conversion
• Provides enhanced electrostatic discharge (ESD) protection rated at 15 kV
• Operates on a single 5-V power supply without requiring external charge pumps beyond internal capacitors
• Supports high-speed data transmission up to 250 kb/s

Applications

• Industrial control systems requiring robust serial communication interfaces
• Modem interfacing in embedded computing environments
• Point-of-sale (POS) terminals and barcode scanners
• Medical equipment utilizing RS-232 connectivity

Procurement Notes

Verify the specific suffix 'G4' compliance if lead-free certification is required, as this indicates RoHS compliance. Confirm the package type matches the design footprint, specifically the 16-SOIC dimensions. Check for end-of-life status or obsolescence notices from Texas Instruments before finalizing procurement plans. Ensure the operating temperature range meets the environmental requirements of the target application.

Selection Notes

Select this component when a dual-channel RS-232 transceiver with high ESD immunity is needed. Compare against the standard MAX232DR if lower cost is prioritized over the extended temperature range and higher data rate. Ensure the PCB layout accommodates the required external coupling capacitors for the internal charge pump circuit. Verify that the 16-SOIC package width fits the available board space constraints.

Part Context

This part belongs to the MAX232E family, which offers improved performance over the original MAX232 series. It shares the same pinout and functionality as other variants like the MAX232EIDR but may differ in packaging or specific electrical characteristics such as data rate and temperature range. It is a widely used interface solution for legacy serial communication protocols.

Replacement Considerations

The TRS232EIDWR is documented as a parameter-equivalent replacement. Other compatible parts include the MAX232EIDWRG4 and MAX232EIDR, though verification of specific suffix differences is necessary.