74F169PC

Overview

The Fairchild Semiconductor 74F169PC is a high-speed binary counter belonging to the 74F series. It features a 4-bit synchronous design with bidirectional counting capabilities, triggered by the positive edge of the clock signal. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum count rate of 90 MHz. It is housed in a 16-PDIP package suitable for through-hole mounting.

Feature Summary

• Synchronous 4-bit binary counting architecture
• Bidirectional up and down counting functionality
• Positive edge-triggered operation

Applications

• Digital frequency division circuits
• Programmable timing sequences
• High-speed digital counters

Procurement Notes

Verify component authenticity as this part is marked as obsolete. Confirm that the 16-PDIP package matches the target PCB footprint. Ensure the manufacturer designation aligns with current inventory sources, noting potential transitions from Fairchild to onsemi. Validate RoHS compliance status against specific production batches.

Selection Notes

Select this component when a synchronous, bidirectional 4-bit counter is required at high speeds. The 74F series offers faster performance than standard 74LS counterparts but consumes more power. Verify that the 4.5V to 5.5V operating voltage range is compatible with the system logic levels and power supply constraints.

Part Context

This integrated circuit is part of the broader 74F family of high-speed TTL logic devices. The 74F169 specifically addresses applications requiring precise, fast-counting operations with direction control. It serves as a fundamental building block for complex digital systems needing reliable binary counting functions.

Replacement Considerations

Check for equivalents such as the 74F169N or other manufacturers' 74F169 variants. Ensure pin compatibility and electrical specifications match before substitution.