SN74HC682N

Comparators Overview

The SN74HC682N is an 8-bit magnitude comparator from Texas Instruments' HC logic family, housed in a 20-pin PDIP package. It compares two 8-bit binary or BCD words, providing active-low outputs for A=B, A>B, and A<B conditions. The device incorporates 100-kΩ pullup termination resistors on the Q inputs to manage floating states. It operates within a supply voltage range of 2 V to 6 V, with a typical propagation delay of 22 ns. Designed for through-hole mounting, it supports industrial temperature ranges and ensures reliable digital comparison in complex logic circuits.

Comparators Feature Summary

• Performs 8-bit magnitude comparisons between two binary or BCD words
• Features integrated 100-kΩ pullup termination resistors on Q inputs
• Provides active-low outputs indicating equality, greater than, or less than relationships

Comparators Applications

• Digital data comparison systems
• Address decoding logic
• BCD code validation circuits

Comparators Procurement Notes

Verify the specific suffix 'N' confirms the 20-pin PDIP through-hole package variant. Confirm the revision level matches your design requirements, as electrical characteristics may vary slightly between revisions. Ensure the operating environment stays within the specified voltage and temperature limits defined in the official datasheet to maintain signal integrity and performance standards.

Comparators Selection Notes

Select this component when 8-bit parallel comparison is required with active-low output signaling. The HC series offers CMOS compatibility and low power consumption suitable for general-purpose digital applications. Consider the PDIP-20 package if through-hole assembly is mandated by the PCB layout constraints or manufacturing process requirements.

Comparators Part Context

This part belongs to the SNx4HC682 family of 8-bit magnitude comparators. The 'HC' designation indicates High-speed CMOS technology, offering faster switching speeds compared to standard 4000B series devices while maintaining low static power dissipation. The family provides standardized pinouts and logical functions for consistent integration across various digital system designs.

Comparators Replacement Considerations

Compatible substitutes include other SN74HC682 variants with different package options, such as SOIC-20 or TSSOP-20, provided pin compatibility is verified. Cross-family replacements like SN54HC682 are available for military-grade temperature ranges but require interface verification.