SN74AS298DR

Overview

The SN74AS298DR is a quadruple 2-input multiplexer with storage, belonging to the Texas Instruments AS series. It features four independent 2-to-1 multiplexers, each equipped with a D-type flip-flop for data storage. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports high-speed signal switching. It is housed in a 16-pin SOIC package.

Feature Summary

• Integrates four independent 2-to-1 multiplexers with dedicated storage capabilities
• Features high-speed operation characteristic of the AS logic series
• Includes D-type flip-flops for data latching at multiplexer inputs

Applications

• Data communication systems requiring signal routing
• Digital logic circuits needing multiplexed data paths
• Storage-integrated switching applications

Procurement Notes

Verify the specific suffix 'DR' indicates the tape-and-reel packaging format and SOIC-16 package type. Confirm RoHS compliance status as per the latest manufacturer documentation, noting that older revisions may differ. Ensure the operating temperature range meets system requirements before procurement.

Selection Notes

Select this component when multiple independent 2-to-1 multiplexing functions with data storage are required in a single package. Compare propagation delay specifications against system timing constraints. Consider pin compatibility if replacing legacy LS or S series devices in existing designs.

Part Context

This part belongs to the Texas Instruments SN74AS family, known for advanced Schottky technology offering higher speed than standard TTL. The SN74AS298 specifically addresses applications requiring both multiplexing and temporary data storage without external memory components.

Replacement Considerations

The SN74LS298 offers similar functionality but with slower speeds. Verify electrical compatibility and timing margins when substituting. Check pinout consistency to ensure direct replacement feasibility.