MAX231EPD

Overview

The MAX231EPD+ is a +5V-powered, multichannel RS-232 driver and receiver manufactured by Analog Devices/Maxim Integrated. It operates within an extended temperature range of -40°C to +85°C and utilizes a 14-pin PDIP package. The device supports full-duplex communication with two drivers and two receivers, achieving data rates up to 120 kb/s. It functions on a single +5V supply, utilizing internal charge pumps to generate the necessary voltage levels for RS-232 signaling.

Feature Summary

• Integrates dual charge-pump circuitry to eliminate the need for external bipolar power supplies
• Enables direct interface between TTL/CMOS logic and RS-232 standards using a single +5V source
• Provides full-duplex signal transmission and reception capabilities

Applications

• Interface translation between microcontrollers and serial ports
• Multidrop RS-232 network connections
• Portable diagnostic equipment requiring low-power serial communication

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm that the ordering suffix corresponds to the specified PDIP package and industrial temperature grade. Ensure compliance with RoHS directives as indicated in the product specifications before procurement.

Selection Notes

Select this component when designing systems requiring RS-232 connectivity without access to negative voltage rails. It is suitable for applications prioritizing board space efficiency due to integrated charge pumps. Verify that the required data rate does not exceed 120 kb/s and that the operating environment falls within the specified temperature limits.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family offers various configurations regarding driver/receiver counts and control features, all sharing the core capability of single-supply operation.

Replacement Considerations

Direct functional replacements include other members of the MAX220-MAX249 series such as the MAX232 or MAX233, provided pin compatibility and specific feature requirements like shutdown modes are evaluated.