MAX235EPG

Overview

The MAX235EPG+ is a fully integrated, +5V-powered multichannel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It provides five drivers and five receivers in a single package, supporting full-duplex communication for EIA/TIA-232E and V.28/V.24 interfaces. The device operates on a single +5V supply (4.75V to 5.25V) utilizing an internal charge pump to generate the required ±10V levels without external components. It features a data rate of up to 120Kbps, a receiver input hysteresis of 500mV, and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for bipolar ±12V supplies or external capacitors.
• Enables single-supply operation from a standard +5V source.
• Includes AutoShutdown mode for significant power reduction.

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 network implementations
• Portable diagnostics equipment requiring low power consumption

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life notices, as specific variants may be discontinued. Ensure ordering suffixes match exact package and temperature requirements before purchase.

Selection Notes

Select this component when board space is critical due to its integrated capacitor design. Verify that the required channel count matches the five-driver/five-receiver configuration. Ensure the application environment falls within the specified industrial temperature range and voltage constraints.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for serial communications. The MAX235 variant specifically offers a high channel count suitable for complex interface requirements while maintaining compatibility with standard RS-232 signaling protocols.

Replacement Considerations

Public confirmed substitute part numbers: MAX235EPG+G36.

FAQ

Does the MAX235EPG require external capacitors?

No, the MAX235 integrates the necessary capacitors internally, eliminating the need for external components typically required for charge pump circuits.

What is the maximum data rate supported?

The device supports data rates up to 120Kbps under normal operating conditions.

How does the device handle power consumption during idle states?

It features a shutdown mode that reduces power consumption to approximately 5μW, making it suitable for battery-operated portable applications.