74F190SC

Overview

The Fairchild Semiconductor 74F190SC is a high-speed synchronous up/down decade counter belonging to the F/FAST logic series. It features a 4-bit binary-coded decimal architecture with separate clock inputs for counting up and counting down operations. The device operates synchronously, changing states on positive clock transitions, and includes asynchronous master reset functionality. Designed for standard TTL applications, it supports bidirectional counting within a modulo-10 sequence.

Feature Summary

• Synchronous up/down decade counting capability with dedicated clock inputs
• Asynchronous master reset for immediate initialization
• High-speed operation suitable for demanding digital timing applications

Applications

• Digital frequency division circuits
• Sequential control logic systems
• Time-base generation modules

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status and package integrity upon receipt. Ensure storage conditions meet specified humidity sensitivity levels to prevent moisture-induced damage prior to soldering.

Selection Notes

Select this component when a synchronous decade counter with independent up/down control is required. Verify voltage supply compatibility within the standard operating range. Consider pinout compatibility if replacing existing designs in SOIC packages.

Part Context

This part belongs to the 74F series of high-speed CMOS-compatible logic devices. It serves as a specialized sequential element distinct from general-purpose counters, offering precise decade counting functions essential for digital system timing and sequencing requirements.

Replacement Considerations

Check for equivalent parts such as 74F190PC or 74F193SJ based on package and specific clock configuration needs. Ensure functional parity regarding synchronous operation and reset behavior before substitution.