MC74F85M

Comparators Overview

The MC74F85M is a 4-bit magnitude comparator from onsemi's 74F logic series. It compares two 4-bit binary words to determine their relative magnitude, providing outputs for Greater Than (A>B), Less Than (A<B), and Equal (A=B). The device operates with a supply voltage range of 4.5 V to 5.5 V and features low propagation delay characteristics typical of the F series. It is housed in an SOIC-16 surface-mount package and supports industrial temperature ranges.

Comparators Feature Summary

• Performs high-speed comparison of two 4-bit binary numbers
• Provides distinct digital outputs for greater than, less than, and equal conditions
• Supports cascading configurations for comparing wider bit widths

Comparators Applications

• Digital arithmetic logic units
• Address decoding systems
• Comparator circuits in control logic

Comparators Procurement Notes

Verify the specific suffix 'M' corresponds to the SOIC-16 package and standard operating temperature range as defined in the official datasheet. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as these details are subject to change and are not included in this technical summary.

Comparators Selection Notes

Select the MC74F85M when a fast 4-bit magnitude comparison is required within a 5V logic system. Ensure the application environment stays within the specified voltage limits of 4.5V to 5.5V. Consider the SOIC-16 package constraints for PCB layout and thermal management during selection.

Comparators Part Context

This component belongs to the 74F logic family, known for its speed-performance trade-off compared to standard TTL. It serves as a fundamental building block for digital decision-making processes where rapid evaluation of numerical relationships is critical for system operation.

Comparators Replacement Considerations

Compatible substitutes include other 74F-series 4-bit comparators such as the SN74F85. Verify pin compatibility and electrical specifications before substitution.

Comparators FAQ

What is the function of the cascade inputs?

The cascade inputs allow multiple MC74F85M units to be connected together to compare binary numbers larger than 4 bits.

Does the MC74F85M support 3-state outputs?

No, the MC74F85M provides standard active-high outputs for the comparison results and does not feature tri-state capability.