SN74ALS679DW

Comparators Overview

The SN74ALS679DW is a 12-bit address comparator from Texas Instruments' ALS logic series. It features an SOIC-20 package and operates within a voltage range of 4.5 V to 5.5 V. The device provides inverted outputs for address matching detection. It supports TTL input levels and functions across a commercial temperature range of 0°C to +70°C.

Comparators Feature Summary

• Provides 12-bit parallel address comparison functionality
• Features inverted output signals for match indication
• Compatible with standard TTL input voltage levels

Comparators Applications

• Memory address decoding systems
• Peripheral identification circuits
• Digital system configuration verification

Comparators Procurement Notes

Verify the obsolete status of this component before integration into new designs. Confirm that the SOIC-20 package dimensions align with existing PCB footprints. Ensure supply chain availability through authorized distributors or secondary markets, as original production may have ceased.

Comparators Selection Notes

Select this component when a dedicated 12-bit hardware comparator is required for address matching. Consider the ALS series speed-power characteristics against alternative logic families. Verify that the inverted output polarity meets the downstream logic requirements without additional inversion stages.

Comparators Part Context

This part belongs to the SN74ALS679 family of high-speed CMOS logic devices. It serves as a specialized integrated circuit for digital logic applications requiring precise bit-wise comparison. The DW suffix indicates a plastic small-outline package variant manufactured by Texas Instruments.

Comparators Replacement Considerations

Check for direct pin-compatible substitutes within the same ALS family. Evaluate generic 12-bit comparators if functional equivalence allows. Verify that any replacement maintains the 4.5V to 5.5V operating voltage range.