QS74FCT520ATQ

Shift Registers Overview

The QS74FCT520ATQ is an 8-bit universal shift register manufactured by Quality Semiconductor, belonging to the FCT logic series. It utilizes high-speed CMOS technology and operates within a supply voltage range of 4.75 V to 5.25 V. The device features a 20-pin SSOP package with a width of 3.90 mm. It supports serial-in/serial-out, serial-in/parallel-out, parallel-in/serial-out, and parallel-in/parallel-out data transfer modes. The component is designed for industrial temperature ranges, typically operating between -40 °C and +85 °C.

Shift Registers Feature Summary

• Supports multiple data transfer configurations including serial-to-serial, serial-to-parallel, parallel-to-serial, and parallel-to-parallel operations.
• Utilizes high-speed CMOS technology for efficient performance in bus interface applications.
• Provides flexible clocking options with dedicated inputs for serial data shifting and parallel loading.

Shift Registers Applications

• High-speed data buffering in digital communication systems
• Serial-to-parallel conversion for peripheral interfacing
• Parallel-to-serial conversion for transmission lines

Shift Registers Procurement Notes

Verify the specific suffix 'ATQ' to confirm the SSOP package type and industrial temperature rating. Ensure compatibility with 5V logic levels. Check RoHS compliance status as manufacturing specifications may vary by production batch. Confirm lead times and availability directly with authorized distributors or the manufacturer, as these details are subject to change.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with high-speed CMOS characteristics is required. It is suitable for designs needing versatile data movement capabilities between serial and parallel domains. Consider the 20-pin SSOP footprint for PCB layout constraints. Verify that the operating voltage and temperature range meet the system requirements before finalizing the design.

Shift Registers Part Context

This part belongs to the 74FCT family, which bridges the performance gap between standard TTL and advanced CMOS technologies. Quality Semiconductor produces this variant focusing on cost-effective solutions for general-purpose logic applications. The FCT series is known for its compatibility with existing 74-series designs while offering improved speed and lower power consumption.

Shift Registers Replacement Considerations

Cross-reference with CY74FCT520 variants from Texas Instruments for pin-compatible alternatives. Verify electrical parameters such as propagation delay and output drive current to ensure functional equivalence. Package dimensions must match the existing PCB footprint.