74F169SC

Overview

The Fairchild Semiconductor 74F169SC is a 4-bit synchronous, presettable Modulo 16 up/down counter. It features an internal carry look-ahead for high-speed counting applications. The device operates with positive edge triggering and supports bidirectional counting. It is housed in a 16-pin SOIC package (PDSO16). The component functions as a binary counter within the F/FAST series, utilizing TTL logic levels. It includes load/preset inputs and provides true outputs.

Feature Summary

• Synchronous operation with positive edge triggering
• Internal carry look-ahead for high-speed performance
• Bidirectional up/down counting capability
• Presettable Modulo 16 functionality

Applications

• High-speed counting designs
• Digital timing circuits
• Frequency division networks

Procurement Notes

Verify current production status as Fairchild Semiconductor products may be discontinued or obsolete. Confirm package compatibility and lead times with authorized distributors. Ensure the specific suffix matches required specifications. Check for RoHS compliance if applicable to your region. Validate supply chain authenticity through official channels.

Selection Notes

Select this component for applications requiring synchronous 4-bit counting with fast propagation delays. The internal carry look-ahead makes it suitable for cascading multiple counters without external logic. Consider the SOIC-16 package for surface mount assembly. Verify voltage range and temperature specifications against system requirements.

Part Context

The 74F169SC belongs to the 74F series of high-speed CMOS logic devices manufactured by Fairchild Semiconductor. This series is known for speed comparable to standard TTL but with lower power consumption. The part is a specialized counter designed for digital systems requiring precise timing and count control.

Replacement Considerations

Compatible substitutes include other 4-bit synchronous bidirectional counters from the 74F family. Verify pinout compatibility before substitution. Alternative manufacturers may offer equivalent parts with different suffixes. Ensure electrical characteristics match the original design requirements.