SN74AS298ADRG4

Overview

The SN74AS298ADRG4 is a quadruple 2-input multiplexer with storage, integrating the functionality of two MSI functions in a single package. It selects between two 4-bit data sources and synchronously stores data using the system clock. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 62 MHz. It is characterized for operation from 0°C to 70°C.

Feature Summary

• Integrates quadruple 2-input multiplexing with synchronous storage capabilities
• Selects between two independent 4-bit data words based on word-select input
• Supports high-speed operation up to 62 MHz clock frequency
• Provides parallel load capability for simultaneous data entry

Applications

• Dual source for operands and constants in arithmetic processors
• Implementing separate registers capable of parallel exchange of contents
• Universal-type register for implementing various shift patterns including compound left-right capability

Procurement Notes

Verify that the specific ordering suffix matches the required package type and tube quantity. Confirm the operating temperature range meets application requirements as this variant is rated for 0°C to 70°C. Ensure supply voltage constraints are strictly adhered to within the recommended limits.

Selection Notes

Select this component when combining multiplexing and storage functions reduces logic count. Consider the AS series speed characteristics for high-frequency applications. Verify pin compatibility if replacing legacy designs requiring equivalent MSI functionality in a compact form factor.

Part Context

This part belongs to the Texas Instruments SN74AS298A family, which combines multiplexer and flip-flop functions. It serves as a consolidated alternative to using separate multiplexer and register ICs, simplifying board layout and reducing component count in digital logic designs requiring data selection and storage.

Replacement Considerations

SN74AS298AD