SN74HC684DW

Comparators Overview

The SN74HC684DW is an 8-bit magnitude comparator manufactured by Texas Instruments in a 20-pin SOIC package. It compares two 8-bit binary words to determine their relative magnitude, providing outputs for A>B, A<B, and A=B conditions. The device operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -40°C to 85°C. Key electrical characteristics include high-level and low-level output currents of 5.2 mA each, with a maximum propagation delay of 47 ns at 6V supply with 50 pF load.

Comparators Feature Summary

• Performs 8-bit binary magnitude comparison between two input words
• Provides distinct logic outputs for greater than, less than, and equal conditions
• Compatible with standard CMOS logic families for system integration

Comparators Applications

• Digital data processing systems requiring magnitude evaluation
• Address decoding circuits in microprocessor-based designs
• Control logic for sorting or ranking operations

Comparators Procurement Notes

Verify the exact part marking HC684 on the component body to confirm authenticity. Ensure the package type matches the 20-SOIC (DW) specification. Check datasheet revisions for any updates to electrical characteristics or recommended operating conditions before finalizing procurement specifications.

Comparators Selection Notes

Select this component when an 8-bit resolution is required for magnitude comparison. Consider the 5.2 mA output drive capability for direct interfacing with standard loads. Verify that the 47 ns propagation delay meets the timing requirements of the target application circuit.

Comparators Part Context

This device belongs to the Texas Instruments SN74HC series of high-speed CMOS logic devices. It serves as a digital comparator function within the broader family of logic ICs designed for general-purpose digital applications. The DW suffix indicates the specific 20-lead small-outline integrated circuit package format.

Comparators Replacement Considerations

Check for compatible equivalents such as the SN54HC684 for military temperature ranges. Verify pinout compatibility and electrical parameter alignment before substituting with other manufacturer's parts.