74FCT373ASCX

Latches Overview

The National Semiconductor 74FCT373ASCX is an octal transparent latch featuring three-state outputs, belonging to the FCT logic series. It integrates eight D-type latches within a single package, designed for bus-organized system applications. The device utilizes CMOS technology and operates with true output polarity. Key electrical characteristics include a load capacitance of 50 pF and a maximum low-level output current of 0.048 A. It supports power-off disable functionality for outputs and is housed in a 20-pin SSOP package.

Latches Feature Summary

• Integrates eight independent transparent latches for parallel data storage
• Provides three-state outputs compatible with bus-oriented architectures
• Ensures glitch-free operation during power-up and power-down sequences

Latches Applications

• Bus-organized system data storage
• Driving heavily loaded three-state buses
• Interfacing with MOS memories or microprocessors

Latches Procurement Notes

Verify the manufacturer origin carefully, as National Semiconductor assets were acquired by Texas Instruments. Confirm that the specific suffix 'ASCX' corresponds to the intended SSOP-20 packaging and commercial temperature range. Ensure compatibility with existing board layouts regarding pin definitions and thermal requirements before procurement.

Latches Selection Notes

Select this component when an octal latch with high-drive three-state outputs is required for FCT-series buses. It serves as a direct functional replacement for other 74FCT373 variants from different manufacturers, provided voltage levels and package dimensions match the design constraints. Consider the specific speed grade and operating temperature range relative to system timing requirements.

Latches Part Context

This component belongs to the widely used 74FCT (Fast CMOS) family, bridging the performance gap between standard TTL and advanced CMOS technologies. The 74FCT373 variant specifically provides octal latching capabilities, essential for managing data flow in complex digital systems requiring synchronized storage and high-speed bus interfacing.

Latches Replacement Considerations

Direct substitutes include CY74FCT373ATQCT from Texas Instruments and IDT74FCT373CTPYG from Renesas. Verify pinout compatibility and ensure the alternative part number matches the SSOP-20 package configuration.