MAX236ENG+

Overview

The MAX236ENG+ is a fully integrated RS-232 transceiver from the MAX220–MAX249 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply and includes an internal dual charge-pump DC-DC voltage converter to generate ±10V for driver operation without external bipolar supplies. The device features four drivers and four receivers, supporting data rates up to 120kbps with a typical transition slew rate of 5V/µs. It provides ±30V input protection on receiver pins and includes enable control inputs for low-power shutdown modes. The component is housed in a 28-pin Wide SOIC package and is rated for industrial operating temperatures ranging from -40°C to +85°C.

Feature Summary

• Integrated charge-pump circuitry eliminates the need for external bipolar power supplies
• Provides full RS-232 compliance with ±30V receiver input protection
• Features dedicated enable pins for independent transmitter and receiver control
• Supports low-power shutdown mode to minimize current consumption

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring single-supply operation

Procurement Notes

Verify the specific suffix 'ENG+' against the manufacturer's official ordering guide to confirm the exact temperature range (-40°C to +85°C) and lead-free packaging status. Ensure the procurement channel sources directly from authorized distributors or the manufacturer to guarantee authenticity and traceability for this interface IC.

Selection Notes

Select the MAX236ENG+ when designing systems that require four channels of bidirectional RS-232 communication powered solely by a +5V rail. This part is suitable for applications needing independent control over transmitter and receiver states via enable pins, offering a space-saving alternative to discrete solutions while maintaining standard EIA/TIA-232E electrical characteristics.

Part Context

This component belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 line drivers and receivers. The family offers various configurations of driver and receiver counts across multiple package types. The MAX236 specifically provides a balanced 4-driver and 4-receiver configuration within the wide SOIC footprint, designed for compact board layouts.

Replacement Considerations

Direct functional replacements within the same family include the MAX236CNG+ (commercial temperature range) or other variants like the MAX237 series if additional channels are required. Verify pin compatibility and thermal specifications before substituting.