DS481TN

Overview

The DS481TN is a low-power RS-485 and RS-422 multipoint transceiver manufactured by National Semiconductor. It features one driver and one receiver within an 8-pin PDIP package. The device supports half-duplex communication with a sleep mode for enhanced power efficiency. It operates with CMOS logic levels and is designed for robust data transmission in multipoint bus configurations.

Feature Summary

• Supports both RS-485 and RS-422 communication standards
• Integrates one driver and one receiver in a single package
• Includes a dedicated sleep mode to minimize power consumption

Applications

• Multipoint serial communication networks
• Industrial control systems requiring RS-485/RS-422 interfaces
• Low-power embedded data transmission applications

Procurement Notes

Verify the manufacturer marking matches National Semiconductor specifications. Confirm the package type is 8-MDIP or PDIP-8 as indicated in official documentation. Ensure the component meets the required electrical characteristics for RS-485/RS-422 compliance before integration into final designs.

Selection Notes

Select this component when a low-power, half-duplex transceiver is required for multipoint bus architectures. The integrated sleep mode makes it suitable for battery-operated or energy-sensitive applications. Ensure compatibility with existing CMOS logic voltage levels in the system design.

Part Context

This part belongs to the DS481 series of line transceivers. It is functionally equivalent to other low-power RS-485/RS-422 transceivers but is specific to National Semiconductor's manufacturing process and pinout configuration. The 'TN' suffix typically denotes the package and temperature range variant.

Replacement Considerations

Direct substitutes may include other low-power RS-485/RS-422 transceivers from different manufacturers, provided they match the 8-pin DIP package and electrical specifications. Verify pin compatibility and signal integrity requirements before substitution.