MC14585BCPG

Comparators Overview

The MC14585BCPG is a 4-bit magnitude comparator from the onsemi MC14500B CMOS logic family. It operates within a supply voltage range of 3V to 18V and features active-high outputs for A<B, A=B, and A>B comparisons. The device utilizes a 14-pin PDIP package with dimensions of approximately 17.78mm x 6.35mm. It supports an operating temperature range from -55°C to +125°C. Static current consumption is typically 20µA at 15V. Propagation delay is specified at 260ns maximum at 15V with 50pF load.

Comparators Feature Summary

• Performs parallel comparison of two 4-bit binary words
• Provides distinct active-high status signals for less than, equal, and greater than conditions
• Supports cascading via dedicated input pins for multi-bit expansion

Comparators Applications

• Digital arithmetic logic units requiring magnitude determination
• Address decoding systems in embedded controllers
• Data validation circuits checking equality or order of digital inputs

Comparators Procurement Notes

Verify component authenticity through authorized distribution channels due to obsolete status. Confirm package integrity upon receipt as the PDIP form factor may exhibit lead oxidation during long-term storage. Validate datasheet revisions against specific manufacturing lots to ensure parameter consistency. Request material declarations for compliance with regional environmental regulations prior to integration into final assemblies.

Comparators Selection Notes

Select this component when legacy CMOS compatibility is required for 4-bit comparison tasks. Ensure design accommodates the slower propagation speeds inherent to standard MC14500B series compared to high-speed alternatives. Verify that the 14-pin DIP footprint aligns with existing PCB layouts or adapter requirements. Consider power dissipation limits if operating near the upper voltage threshold in enclosed environments.

Comparators Part Context

This part belongs to the MC14500B series, representing standard CMOS logic technology developed by Motorola and continued by onsemi. It serves as a foundational digital building block for magnitude comparison operations. The series is characterized by wide supply voltage tolerance and robust noise immunity typical of early CMOS designs. It complements other logic families like TTL for mixed-voltage system interfaces.

Comparators Replacement Considerations

Direct substitutes include CD4585BE from Texas Instruments. Verify pinout compatibility and electrical specifications before substitution. Note that the MC14585BDG variant offers surface mount packaging but shares identical logical functionality.