MAX232ECN

Overview

The MAX232ECN is a dual EIA-232 driver and receiver transceiver manufactured by Texas Instruments. It operates on a single 5V supply with a voltage range of 4.5V to 5.5V. The device supports full-duplex communication at data rates up to 120 kb/s. It features two drivers and two receivers, consuming 10 mA of operating current. The component is housed in a 16-pin PDIP package and is designed for through-hole mounting. It functions within an industrial temperature range from -40°C to +85°C and includes built-in ESD protection.

Feature Summary

• Integrates dual drivers and receivers for complete RS-232 signal conversion between TTL/CMOS levels and EIA-232 voltages.
• Utilizes internal charge pump circuitry to generate positive and negative supply voltages from a single 5V source, eliminating the need for external bipolar power supplies.
• Provides robust ESD protection capabilities to safeguard against electrostatic discharge events during operation.

Applications

• Serial port interfacing in industrial control systems
• Modem communication interfaces
• Point-of-sale (POS) terminals

Procurement Notes

Verify the specific suffix 'CN' indicates the PDIP-16 package variant when sourcing. Confirm RoHS compliance status as it varies by manufacturing batch. Ensure the supplier provides official datasheets matching the MAX232E family specifications. Check for lead time variations due to the component's long-standing production history. Validate that the received units match the Texas Instruments branding and marking codes.

Selection Notes

Select this part for designs requiring through-hole assembly and industrial temperature stability. Compare against the MAX232IDR if surface-mount technology is preferred for the same electrical performance. Consider the MAX3232 series if operation with lower voltage supplies or higher data rates is required. Verify pin compatibility with existing PCB footprints before switching packages.

Part Context

The MAX232ECN belongs to the legacy MAX232 family of RS-232 transceivers. It serves as a bridge between microcontroller UARTs and standard serial ports. The 'E' suffix typically denotes the extended temperature grade (-40°C to +85°C). This component remains widely used in legacy equipment maintenance and educational electronics projects.

Replacement Considerations

MAX232CN: Same electrical specs but commercial temperature range. MAX232IDR: Surface-mount SOIC package equivalent. MAX3232EIDR: Lower voltage compatible alternative.