DS1481S+T&R

Specialized Overview

The DS1481S+T&R is a dedicated 1-Wire timing generator and bus master designed for parallel port or microcontroller interfaces. It operates on a single 5V supply with a maximum active current of 500 µA. The device supports standard and overdrive communication speeds, utilizing two busy output signals (O1/BSY1, O2/BSY2) to allow host processors to perform other tasks during I/O operations. Packaged in a 14-pin SOIC format, it features cascading capabilities for multiple devices and includes transparent mode support for EPP/ECP printer coexistence.

Specialized Feature Summary

• Provides a synchronous interface to Dallas Semiconductor 1-Wire devices while allowing print spoolers and other processes to run concurrently.
• Supports high-speed communication with overdrive-capable devices through specific toggle commands.
• Enables cascading of multiple units by connecting outputs to subsequent inputs for expanded network control.
• Includes transparent mode functionality to maintain bidirectional communication with EPP or ECP parallel port peripherals.

Specialized Applications

• Interface between PC parallel ports and 1-Wire networks
• Microcontroller-based 1-Wire system integration
• Short-range 1-Wire network masters

Specialized Procurement Notes

Verify component authenticity upon receipt as the datasheet indicates this part is not recommended for new designs. Confirm package integrity and pin alignment against the 14-pin SOIC specification. Ensure storage conditions remain within the specified range prior to installation.

Specialized Selection Notes

Select this component only for legacy systems requiring parallel port compatibility or existing designs utilizing the DS1481 architecture. Evaluate if newer controllers like the DS2480B are suitable for longer network lengths or modern interface requirements.

Specialized Part Context

This component belongs to the DS1481 series of 1-Wire bus masters manufactured by Analog Devices / Maxim Integrated. It serves as a specialized interface solution for managing 1-Wire protocols via standard computer ports or simple digital logic controllers.

Specialized Replacement Considerations

Public confirmed substitute part numbers: DS1481S