MAX231EJD

Overview

The MAX231EJD is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, designed for single-supply operation. It operates from a +5 V power supply and supports full-duplex communication with two drivers and two receivers. The device achieves data rates up to 120 kb/s and features low power consumption with a shutdown mode reducing supply current to less than 35 µA. It includes internal charge pumps to generate the necessary positive and negative voltages for RS-232 signaling without external components. The unit is housed in a 16-pin SOIC package and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Dual driver and receiver configuration for simultaneous bidirectional communication
• Internal charge pump eliminates requirement for external voltage sources
• Shutdown mode provides significant power reduction for battery applications
• Single +5 V supply operation simplifies system design

Applications

• Industrial control systems requiring serial communication
• Portable instruments and handheld devices
• Modem interfaces and telecommunications equipment

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm package type and temperature grade. Ensure compatibility with existing board layouts regarding pin assignments and decoupling capacitor requirements. Confirm RoHS compliance status through the latest datasheet revision before procurement.

Selection Notes

Select this component when dual-channel RS-232 connectivity is required within a single IC footprint. Consider the 120 kb/s speed limit for high-speed applications where faster alternatives may be necessary. Evaluate the shutdown feature if power efficiency is critical for the target application environment.

Part Context

This part belongs to the Maxim Integrated MAX231 family of dual RS-232 transceivers. It shares functional similarities with other members like the MAX232 but offers specific packaging and performance characteristics tailored for compact designs. The series is widely recognized for its reliability in standard serial communication protocols.

Replacement Considerations

Direct replacements include the MAX232EID and MAX232EJD. Verify pin compatibility and electrical specifications before substitution. Alternative families such as the MAX3232 offer improved ESD protection and wider voltage ranges.