74F299SJX

Overview

The Fairchild Semiconductor 74F299SJX is an octal bidirectional shift register belonging to the F/FAST series. It features parallel-in, parallel-out functionality with true outputs and operates on TTL logic levels. The device utilizes a 20-pin Small Outline Package (SOP) with a plastic body. Key electrical parameters include a maximum supply voltage of 5.5 V, a minimum supply voltage of 4.5 V, and a nominal supply voltage of 5 V. The propagation delay is specified at 12 ns. The component supports a bidirectional counting direction and includes hold mode capabilities.

Feature Summary

• Supports bidirectional shifting operations with parallel data loading capabilities
• Features gated output control for managing signal transmission states
• Provides common input/output pins to reduce circuit complexity

Applications

• Bidirectional data transfer in digital communication systems
• Parallel-to-serial and serial-to-parallel conversion circuits
• Digital signal processing applications requiring data storage and manipulation

Procurement Notes

Verify the specific suffix designation against manufacturer documentation to confirm package type and material composition. Ensure compatibility with existing board layouts regarding pin pitch and footprint dimensions. Confirm that the operating temperature range meets system requirements. Validate that the TTL logic level inputs align with the driving source voltages. Check for any lead-free or environmental compliance markings if required by local regulations.

Selection Notes

Select this component when high-speed bidirectional shifting is required within standard TTL voltage ranges. The F/FAST series offers faster performance compared to standard logic families while maintaining CMOS power characteristics. Consider the SOP-20 package constraints for surface mount assembly processes. Evaluate the 12 ns propagation delay against system timing budgets to ensure signal integrity. Verify that the 3-state output capability matches the bus architecture requirements.

Part Context

This part belongs to the 74F series of high-speed Schottky logic devices manufactured by Fairchild Semiconductor. The 74F299 specifically implements an octal bidirectional shift register function. It is designed for applications demanding rapid data movement and storage. The device integrates multiple flip-flops into a single package to optimize space and interconnect density.

Replacement Considerations

Check for equivalent parts from ON Semiconductor following the Fairchild integration. Verify pinout compatibility before substitution. Ensure logical function matches the original design requirements.