QS74FCT373TQ

Latches Overview

The QS74FCT373TQ is an octal transparent latch from the FCT series, manufactured by Quality Semiconductor. It features eight D-type latches with three-state outputs and operates within a voltage range of 4.75V to 5.25V. The device provides true TTL input and output compatibility while maintaining low CMOS power consumption. It supports a maximum propagation delay of 13 ns and includes power-off disable functionality for outputs. The component is housed in a 20-pin Small Outline package.

Latches Feature Summary

• Provides eight-bit data storage with true TTL input and output compatibility
• Features three-state outputs with power-off disable capability
• Operates at standard 5V logic levels with low power consumption

Latches Applications

• High-performance bus-oriented memory mapping
• Clock drivers and buffered oscillators
• Register banks in multi-port systems

Latches Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. Confirm RoHS compliance status as it varies by manufacturing lot. Ensure the supplier provides traceability for the Quality Semiconductor brand. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Latches Selection Notes

Select this component when designing systems requiring octal latching with high-speed performance and low power dissipation. It is suitable for applications needing direct interface with TTL logic without level shifting. Consider the 13 ns propagation delay for timing constraints. Verify that the 20-pin package fits the available PCB footprint and thermal requirements.

Latches Part Context

This part belongs to the FCT (Fast CMOS) family, bridging the gap between standard CMOS and Schottky TTL technologies. It offers improved speed over standard F-series devices while maintaining lower power than LS counterparts. The QS74FCT373TQ specifically targets high-density digital systems requiring reliable data retention and fast switching characteristics.

Latches Replacement Considerations

Cross-reference with CY74FCT373TQ from Texas Instruments or IDT74FCT373TQ for pin-compatible alternatives. Verify electrical specifications match exactly, particularly leakage currents and drive strength. Ensure the replacement maintains the same 20-pin SSOP or TSSOP form factor.