SN74LS682N

Overview

The SN74LS682N is an octal binary or BCD magnitude comparator from Texas Instruments, housed in a 20-pin PDIP package. It operates within a voltage range of 4.85 V to 5.25 V with a maximum supply current of 70 mA. The device features totem-pole outputs and provides logic functions for A=B and A>B comparisons. Propagation delays are specified at 25 ns and 30 ns. It supports surface mount and through-hole installation styles, functioning reliably between 0°C and +70°C.

Feature Summary

• Performs octal binary or BCD magnitude comparison operations
• Provides active low output signals for identity and greater-than conditions
• Utilizes Low Power Schottky (LS) logic technology for efficient performance

Applications

• Digital data processing systems requiring magnitude evaluation
• Control logic circuits for arithmetic units
• Industrial automation monitoring systems

Procurement Notes

Verify the specific suffix 'N' confirms the 20-pin PDIP package type when ordering. Ensure the application environment remains within the 0°C to +70°C operating temperature range. Confirm power supply stability between 4.85 V and 5.25 V to maintain signal integrity. Check datasheet revisions for any updates on pinout or electrical characteristics before final integration.

Selection Notes

Select this component when an 8-bit magnitude comparison function is required in a standard DIP format. It is suitable for designs utilizing Low Power Schottky logic families. Consider the 20-pin footprint constraints during PCB layout. Evaluate propagation delay requirements against system timing specifications to ensure compatibility with other logic gates in the circuit.

Part Context

This part belongs to the Texas Instruments 74LS series of complex function ICs. It is designed as an octal binary or BCD magnitude comparator. The device complements other logic components like adders and decoders within the same family. It serves as a fundamental building block for digital comparison tasks in legacy and modern mixed-signal systems.

Replacement Considerations

Check for direct equivalents such as the SN74LS682NSR for reel packaging options. Verify functional compatibility with other 8-bit LS comparators if pinouts differ. Ensure substitute parts meet the same voltage and temperature specifications.