ST232BD

Drivers, Receivers, Transceivers Overview

The ST232BD is a dual driver and dual receiver RS-232 transceiver manufactured by STMicroelectronics, designed for EIA/TIA-232 and V.28 communication standards. It operates on a single 5V power supply (4.5V to 5.5V) without requiring external charge pumps or ±12V supplies. The device features a typical data rate of 220 kbps and includes controlled output slew rates to minimize electromagnetic interference. It utilizes four external capacitors, typically 0.1µF, for operation. The component supports full-duplex communication and is housed in a TSSOP-16 package, suitable for surface mount installation.

Drivers, Receivers, Transceivers Feature Summary

• Single 5V power supply operation eliminates the need for negative voltage generation circuits
• Integrated controlled slew rate reduces signal reflections and electromagnetic interference
• Robust receiver input protection handles high voltage signals up to ±30V
• Minimal external component requirement using standard 0.1µF capacitors

Drivers, Receivers, Transceivers Applications

• Portable computers and battery-powered systems
• Low power modems and serial communication interfaces
• Industrial multi-drop RS-232 networks
• Interface translation between microcontrollers and legacy serial devices

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'BD' against official STMicroelectronics documentation to confirm temperature range and package variant. Ensure compatibility with existing PCB footprint and capacitor values. Confirm RoHS compliance status through current datasheets. Validate that the 220 kbps data rate meets system requirements. Check for moisture sensitivity classification if reflow soldering is planned.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring reliable RS-232 communication under a strict 5V supply constraint. It is appropriate for applications where space is limited due to the minimal external capacitor count. Consider the 220 kbps speed limit for high-speed data transfer needs. Evaluate the TSSOP-16 package suitability for automated assembly processes. Compare against higher-speed variants like the ST232EB if data rates exceed 230 kbps are required.

Drivers, Receivers, Transceivers Part Context

The ST232BD belongs to the ST232 family of RS-232 transceivers from STMicroelectronics. This series is widely used in embedded systems for serial communication. The device is compatible with similar industry-standard parts like the MAX232, facilitating drop-in replacements in many designs. It represents a cost-effective solution for basic serial interface needs in consumer and industrial electronics.

Drivers, Receivers, Transceivers Replacement Considerations

The ST232B is a closely related variant within the same family. Verify pinout compatibility before substitution. Other compatible devices include the MAX232 and MAX202 series, though electrical characteristics such as slew rate and current consumption may differ. Always consult the specific datasheet for any functional differences.