MAX234EJE

Overview

The MAX234EJE is a +5V-powered, multichannel RS-232 line driver manufactured by Analog Devices Inc./Maxim Integrated. It provides two drivers and operates within a supply voltage range of 4.5V to 5.5V. The device utilizes an internal charge pump to generate the necessary ±10V voltages for RS-232 signaling without requiring external bipolar supplies. It supports data rates up to 120kbps and features TTL/CMOS-compatible inputs and outputs. The component is housed in a 16-pin plastic DIP package and is rated for operation across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external components or bipolar power supplies
• Enables single +5V supply operation for simplified system design
• Provides full RS-232 compliance with standard input/output voltage swings

Applications

• Interface translation between TTL/CMOS logic and RS-232 serial ports
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring low-power serial connectivity

Procurement Notes

Verify the specific suffix JE against official manufacturer documentation to confirm the package type and operating temperature range. Confirm RoHS compliance status as manufacturing processes evolve. Ensure the source document matches the exact part number to avoid confusion with similar variants in the MAX220-MAX249 family that may have different pinouts or electrical characteristics.

Selection Notes

Select this component when designing systems limited to a single +5V power rail. It is suitable for applications requiring two independent RS-232 channels. Verify that the required data rate does not exceed 120kbps under maximum load conditions. Consider the 16-pin DIP footprint during PCB layout planning.

Part Context

This device belongs to the MAX220–MAX249 family of +5V-powered RS-232 transceivers. The family offers various configurations ranging from one to four drivers/receivers. The MAX234 specifically provides a dual-driver configuration, distinguishing it from single-driver models like the MAX220 or higher-density options like the MAX241.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.