SN74LS682NSR

Overview

The SN74LS682NSR is an octal binary or BCD magnitude comparator manufactured by Texas Instruments. It operates within a supply voltage range of 4.85 V to 5.25 V and features a propagation delay of 25 ns to 30 ns. The device draws a maximum power supply current of 70 mA and functions reliably between 0°C and +70°C. Packaged in a 20-pin SOIC (NS) surface-mount format, it provides totem-pole outputs for logic functions indicating A=B, A>B, and A<B conditions.

Feature Summary

• Performs eight-bit magnitude comparison for binary or BCD inputs
• Provides dedicated status outputs for equality and inequality states
• Utilizes standard LS TTL logic family characteristics

Applications

• Digital data processing systems requiring magnitude evaluation
• Address decoding circuits in computer architectures
• Control logic for arithmetic units

Procurement Notes

Verify the specific suffix NSR indicates the reel packaging configuration when ordering. Confirm that the operating environment remains within the specified commercial temperature limits. Ensure the design accommodates the stated power supply current requirements for proper thermal management and circuit stability during operation.

Selection Notes

Select this component when an octal comparator with LS speed characteristics is required. Consider the 20-pin SOIC package constraints for board layout. Evaluate the 70 mA current draw against available power resources. Verify compatibility with existing TTL logic levels in the target system architecture.

Part Context

This part belongs to the SN74LS series of logic comparators from Texas Instruments. It serves as a surface-mount variant of the SN74LS682, designed for automated assembly processes. The device integrates eight independent comparison channels into a single integrated circuit package for compact system designs.

Replacement Considerations

Direct substitutes include other SN74LS682 variants with different package options such as the SN74LS682N for through-hole applications. Cross-reference with equivalent octal comparators from other manufacturers if pin compatibility and electrical specifications match exactly.