MAX3232EIDWR

Overview

The MAX3232EIDWR is a Texas Instruments RS-232 transceiver featuring two drivers and two receivers. It operates on a single 3V to 5.5V supply with typical standby current of 300µA. The device supports data rates up to 250kbit/s and includes ±15kV IEC ESD protection. It utilizes four external 0.1µF capacitors for charge pump operation. The component is housed in a 16-pin SOIC package (DW) and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Dual driver and receiver configuration for full-duplex communication
• Integrated dual charge-pump circuit enabling single-supply operation
• Robust electrostatic discharge protection exceeding ±15kV IEC standards
• Logic input compatibility accepting 5V signals while powered by 3.3V

Applications

• Industrial PCs
• Wired networking equipment
• Data center and enterprise computing systems
• Battery-powered portable devices

Procurement Notes

Verify the specific suffix 'IDWR' corresponds to the industrial temperature grade (-40°C to +85°C) and the SOIC-16 tape-and-reel packaging format. Confirm that the ordering information matches the exact datasheet revision required for your design, as TI periodically updates documentation without altering part numbers. Ensure the supplier provides traceability to the original manufacturer's production lot.

Selection Notes

Select this component when designing serial interfaces requiring robust ESD protection and low power consumption in space-constrained applications. The wide supply voltage range allows direct interfacing with both 3.3V and 5V logic families without additional level shifting. Consider the 250kbit/s speed limit; if higher throughput is necessary, evaluate pin-compatible alternatives like the SNx5C3232 series which offer increased signaling rates.

Part Context

This device belongs to the MAX3232 family of multichannel RS-232 line drivers and receivers. It shares functional similarities with the MAX232 but offers improved performance characteristics including lower supply current and enhanced ESD tolerance. The 'I' designation indicates the extended industrial temperature range, distinguishing it from commercial variants.

Replacement Considerations

The SNx5C3232 is a documented high-speed pin-compatible alternative offering 1Mbit/s operation. For automotive-grade requirements, verify availability of the MAX3232E-Q1 variant, which meets specific automotive qualification standards while maintaining identical pinout and electrical specifications.