74F373DC

Latches Overview

The National Semiconductor 74F373DC is an octal transparent latch featuring three-state outputs, designed for bus-organized system applications. It belongs to the F/FAST logic series and operates within a supply voltage range of 4.5 V to 5.5 V. The device provides eight D-type latches with independent enable and output enable controls. It utilizes a 20-pin plastic dual in-line package (PDIP) suitable for through-hole mounting. Key electrical characteristics include a propagation delay of 7 ns at 5 V, a low-level output current capability of 32 mA, and a high-level output current of -3 mA. The component supports commercial operating temperatures from 0°C to +70°C.

Latches Feature Summary

• Octal transparent latch architecture with independent control gates for data transfer and storage
• Three-state outputs engineered to drive heavily loaded buses, MOS memories, or microprocessors
• Glitch-free three-state buffers that maintain high impedance during power-up and power-down cycles
• Compatible with standard TTL logic families for broad interface versatility

Latches Applications

• Bus-organized system data buffering
• Driving MOS memory interfaces
• Interfacing with MOS microprocessors
• General-purpose digital data storage in parallel architectures

Latches Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor's logic division was acquired by Texas Instruments. Confirm whether the specific part number refers to legacy National Semiconductor stock or current TI equivalents. Ensure the package type matches the required PCB footprint and check RoHS compliance status against current environmental regulations before procurement.

Latches Selection Notes

Select this component when an octal latch with high-drive three-state outputs is required for bus interfacing. Consider the 7 ns propagation delay and 32 mA sink current for speed and load requirements. Verify that the PDIP-20 package fits the assembly constraints. Evaluate alternative manufacturers like NXP or onsemi if pin-compatible replacements are needed for supply chain resilience.

Latches Part Context

The 74F373 is a standard octal transparent latch within the 74F (Fast) logic family. It serves as a fundamental building block for digital systems requiring temporary data storage and bus isolation. The device distinguishes itself with robust three-state output drivers capable of handling significant capacitive loads without signal degradation.

Latches Replacement Considerations

Direct substitutes include SN74F373 from Texas Instruments and 74F373 from NXP Semiconductors. These alternatives share identical logical functions and pinouts. Verify package compatibility and ensure voltage specifications align with the target application environment.