MAX232EEWE

Overview

The MAX232EEWE+ is a dual RS-232 transceiver from the Analog Devices/MAXIM family, designed for single +5V supply operation. It integrates charge pump circuitry to generate required voltage levels without external bipolar supplies. The device features two drivers and two receivers supporting full-duplex communication at data rates up to 120 kbps. It provides ±15kV ESD protection on driver outputs and receiver inputs. Operating parameters include a supply voltage range of 4.5V to 5.5V, typical supply current of 10 mA, and an operating temperature range of -40°C to +85°C. The component is housed in a 16-pin Wide SOIC package.

Feature Summary

• Integrated high ±15kV HBM ESD protection on RS-232 inputs and outputs
• Built-in charge pump eliminates need for bipolar ±12V supply
• Single +5V supply operation capability
• Full compliance with EIA/TIA-232E and CCITT V.28 specifications

Applications

• Battery-powered equipment requiring low power consumption
• Hand-held diagnostic tools
• Portable instrumentation interfaces

Procurement Notes

Verify the specific suffix 'EWE' corresponds to the Wide SOIC package and industrial temperature grade (-40°C to +85°C) when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure ordering quantities match available packaging formats such as tubes or reels. Cross-reference the manufacturer part number with distributor codes to prevent substitution errors during procurement.

Selection Notes

Select this component when robust ESD protection is critical for RS-232 connections in harsh environments. It is suitable for applications where space savings are needed due to integrated charge pumps. Compare against non-E versions if cost is the primary constraint, noting that standard versions lack enhanced ESD protection. Ensure external capacitor values match the 1μF requirement for the MAX232 series.

Part Context

This device belongs to the MAX202E-MAX213E and MAX232E/MAX241E family of RS-232 transceivers. The 'E' designation indicates enhanced ESD protection compared to standard variants. The 'W' denotes the Wide SOIC package option, while 'E' in the suffix typically signifies the extended temperature range. This family simplifies interface design by integrating voltage conversion directly onto the chip.

Replacement Considerations

MAX232EWE+ is a direct functional equivalent within the same product line. Non-E versions like MAX232CWE offer similar electrical performance but lack the ±15kV ESD protection feature.