N74F299D,623

Shift Registers Overview

The N74F299D,623 is an 8-bit universal shift/storage register with 3-State outputs manufactured by NXP USA Inc. It operates within a supply voltage range of 4.5V to 5.5V and supports a commercial temperature range of 0°C to +70°C. The device features four operating modes: shift left, shift right, parallel load, and hold. It utilizes a 20-pin plastic Small Outline Package (SOT163-1). Key electrical characteristics include a maximum clock frequency of 115 MHz for Qn outputs and propagation delays ranging from 3.5ns to 10.5ns depending on the signal path.

Shift Registers Feature Summary

• Multiplexed parallel I/O design reduces total package pin count
• Supports synchronous shift left, shift right, parallel load, and hold operations
• Includes additional serial outputs for easy cascading of longer words
• Features active-LOW Master Reset and independent Output Enable controls

Shift Registers Applications

• Bus-oriented data storage applications requiring 3-State isolation
• Serial-to-parallel and parallel-to-serial data conversion systems
• Digital counters and sequence generators
• Data buffering in microprocessor-based systems

Shift Registers Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status as specified in official documentation. Check for obsolescence notices or lifecycle changes prior to finalizing procurement plans. Ensure packaging specifications match system assembly requirements.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with multiplexed I/O is required. Consider the 3-State output capability for bus sharing applications. Evaluate the 115 MHz maximum clock frequency against system timing requirements. Verify that the 20-pin SO package fits the available PCB footprint constraints.

Shift Registers Part Context

This part belongs to the 74F logic family, known for high-speed performance compared to standard TTL. The N74F299D variant specifically provides universal shift and storage functionality. It serves as a digital logic building block for data manipulation tasks in industrial and consumer electronic designs.

Shift Registers Replacement Considerations

Check for direct pin-compatible alternatives within the same logic family. Verify that substitute components maintain identical 3-State output characteristics and operating voltage ranges. Ensure functional equivalence for all four operating modes before implementation.