MAX232NSR

Overview

The MAX232NSR is a dual driver/receiver RS-232 transceiver manufactured by Texas Instruments, designed for single-supply operation. It operates within a voltage range of 4.5 V to 5.5 V and supports data rates up to 120 kb/s. The device features full-duplex communication with two drivers and two receivers. It is housed in a 16-pin SOIC-Narrow package suitable for surface-mount installation. The component functions across an extended industrial temperature range from -40°C to +85°C and includes integrated ESD protection capabilities.

Feature Summary

• Integrates charge pump circuitry to generate positive and negative voltages from a single 5-V supply, eliminating the need for external dual-voltage sources.
• Provides robust signal transmission through dual drivers and receivers optimized for standard RS-232 protocols.
• Incorporates internal electrostatic discharge (ESD) protection mechanisms to safeguard against transient voltage events.

Applications

• Serial communication interfaces between microcontrollers and personal computers.
• Modem control circuits requiring reliable RS-232 signal conversion.
• Industrial equipment utilizing serial data exchange in harsh environments.

Procurement Notes

Verify the specific suffix 'SR' indicates tape-and-reel packaging when sourcing components. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments. Ensure the procurement channel provides valid traceability documentation for quality assurance purposes prior to finalizing orders.

Selection Notes

Select this component for designs requiring surface-mount integration with extended temperature tolerance. Compare against MAX232IDR for identical electrical performance but different packaging formats. Consider MAX3232 variants if lower supply voltage operation or higher data rates are required for the specific application constraints.

Part Context

This part belongs to the widely adopted MAX232 family of interface ICs. It serves as a standard solution for converting TTL/CMOS logic levels to RS-232 standards. The NSR designation specifically identifies the surface-mount variant within the broader product line, maintaining compatibility with legacy designs while enabling modern PCB assembly techniques.

Replacement Considerations

MAX232IDR offers equivalent electrical specifications in a tube-packaged SOIC-16 format. TRS3232EIDR provides parameter-equivalent performance with potential pinout variations. Verify pin-to-pin compatibility and thermal characteristics before substituting these alternatives in existing hardware layouts.