74AS881ANT

Overview

The 74AS881ANT is a high-speed Schottky logic component manufactured by Rochester Electronics, LLC. It functions as an address bus holder designed to maintain stable logic levels on address lines during system transitions. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum clock frequency of 125 MHz. It utilizes a 20-pin Small Outline Integrated Circuit (SOIC) package with a width of 0.209 inches. The component is rated for operation in ambient temperatures ranging from 0°C to 70°C and complies with RoHS3 specifications.

Feature Summary

• Maintains stable address bus states during system initialization or reset conditions
• Provides high-speed data holding capabilities compatible with AS-series logic families
• Ensures reliable signal integrity for address lines in complex digital systems

Applications

• Address bus stabilization in microprocessor-based systems
• Data holding circuits in high-speed digital interfaces
• System initialization logic in computer hardware architectures

Procurement Notes

Verify the specific lot date code and manufacturing origin when sourcing this component, as Rochester Electronics acts as an authorized continuing source for end-of-life products. Confirm that the package marking matches the original Texas Instruments specifications to ensure authenticity. Request documentation confirming compliance with the original OEM performance standards prior to finalizing procurement orders.

Selection Notes

Select this component when maintaining address bus stability is critical during power-up or reset sequences in AS-series logic environments. Ensure the design requires a 20-pin SOIC footprint and operates within the specified 4.5V to 5.5V voltage range. Consider the thermal characteristics and propagation delay requirements relative to the system clock speed before integrating this address bus holder into the circuit design.

Part Context

This component belongs to the 74AS series of high-speed Schottky logic devices originally developed by Texas Instruments. Rochester Electronics provides these parts as an authorized continuing source after the original manufacturer discontinued production. The 74AS881 specifically addresses the need for address line retention in complex digital systems requiring fast switching speeds and reliable state maintenance.

Replacement Considerations

Direct replacements may include the SN74AS881N or SN74AS881NS from Texas Instruments if available. Verify pin compatibility and electrical specifications against the original design requirements before substituting with other address bus holders from different manufacturers.