ST232CTR

Drivers, Receivers, Transceivers Overview

The ST232CTR is a dual-driver, dual-receiver RS-232 interface integrated circuit manufactured by STMicroelectronics. It operates on a single 5V power supply with a voltage range of 4.5V to 5.5V. The device supports data rates up to 220 kb/s and draws a typical supply current of 5 mA under no-load conditions. Transmitter output swings are typically ±7.8V, while receiver inputs tolerate ±30V. It complies with EIA/TIA-232 and V.28 standards. The component is housed in a TSSOP-16 package and is available in cut tape or reel formats.

Drivers, Receivers, Transceivers Feature Summary

• Single 5V power supply operation eliminates the need for external negative voltage generators
• Requires only four small external capacitors (0.1μF) for charge pump functionality
• Compatible with MAX232 and MAX202 pinouts for direct replacement designs
• Controlled output slew rate ensures signal integrity at specified data rates

Drivers, Receivers, Transceivers Applications

• Portable computers and battery-powered systems
• Low power modems and interfaces translation
• Multi-drop RS-232 networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'CTR' corresponds to the required packaging format, such as cut tape or reel, against the manufacturer's official documentation. Confirm RoHS compliance status directly from the datasheet. Ensure the TSSOP-16 package variant matches the PCB footprint requirements. Cross-reference the operating temperature range with the specific sub-grade intended for the application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems limited to a single 5V supply without access to ±12V rails. It serves as a drop-in replacement for MAX232/MAX202 equivalents. Consider the 220 kb/s data rate limit for high-speed serial communication needs. Evaluate the 5 mA quiescent current against strict battery life constraints for portable devices requiring RS-232 connectivity.

Drivers, Receivers, Transceivers Part Context

The ST232C belongs to STMicroelectronics' family of low-power RS-232 transceivers designed for 5V applications. Unlike higher-voltage variants, it utilizes internal charge pumps to generate necessary rail voltages from a single supply. This series targets cost-sensitive and space-constrained embedded designs where traditional multi-supply interfaces are impractical.

Drivers, Receivers, Transceivers Replacement Considerations

The ST232CTR is functionally compatible with the MAX232 and MAX202. Verify pinout alignment and capacitor values when substituting these parts. Ensure the replacement part meets the same EIA/TIA-232 electrical specifications.