72420L15TP

FIFOs Memory Overview

The Renesas Electronics Corporation 72420L15TP is a synchronous FIFO memory device belonging to the 72420 series. It features a storage organization of 64 words by 8 bits and operates with a read/write cycle time of 10 ns. The component supports dual-clock operation where read and write clocks can be asynchronous or coincidental, utilizing a dual-ported zero fall-through time architecture. It provides status signaling through empty, full, almost-empty, and almost-full flags. The output enable function places the data bus in a high-impedance state. This part is available in a 28-pin plastic DIP package and supports an industrial temperature range from -40°C to +85°C.

FIFOs Memory Feature Summary

• Dual-ported zero fall-through time architecture for efficient data buffering
• Supports asynchronous or coincidental read and write clock operations
• Programmable Almost-Empty and Almost-Full flags set relative to Empty and Full states

FIFOs Memory Applications

• Graphics data buffering
• Local Area Networks (LANs)
• Interprocessor communication

FIFOs Memory Procurement Notes

Verify component authenticity and physical condition upon receipt. Confirm that the package type matches the required 28-pin DIP specification. Check for any manufacturing defects or pin alignment issues. Ensure the operating temperature range meets the specific environmental requirements of the target application. Review official documentation for handling precautions related to static-sensitive components.

FIFOs Memory Selection Notes

Select this component when a synchronous FIFO with zero fall-through timing is required for 8-bit data paths. It is suitable for applications needing independent read and write clock domains or shared clock operation. Consider the 28-pin DIP package constraints and industrial temperature rating during design. Evaluate if the 64-word depth and 10 ns speed meet system latency and throughput requirements.

FIFOs Memory Part Context

The 72420L15TP is part of the IDT/Renesas 72420 series of synchronous FIFOs. This family is designed for high-speed data buffering between systems operating at different frequencies. The 72420 variant specifically offers 64x8 organization, distinguishing it from other members like the 72421 which may offer different depths or widths. It represents a standard solution for legacy and industrial interface buffering needs.

FIFOs Memory Replacement Considerations

Check for direct cross-references within the 72420 series. Verify pin compatibility and electrical specifications against alternative synchronous FIFOs. Ensure substitute parts support the same 10 ns cycle time and dual-clock functionality.