72255LA15TFI

Overview

The Renesas 72255LA15TFI is a synchronous FIFO memory device with an organization of 8K x 18 bits. It operates at a maximum data rate of 66.7MHz and features a 10ns access time. The component supports unidirectional bus architecture and includes programmable flags such as Full/Empty indicators. It functions within a voltage range of 4V to 5.5V and is housed in a 64-TQFP package.

Feature Summary

• SuperSync synchronous FIFO architecture with clocked read and write controls
• Programmable status flags for full, empty, and near-full conditions
• Uni-directional data bus interface supporting 18-bit word width

Applications

• High-speed data buffering in telecommunications systems
• Interface bridging between asynchronous logic blocks
• Data acquisition system temporary storage

Procurement Notes

Verify RoHS compliance status carefully, as legacy variants may differ from current production runs. Confirm package marking accuracy against the datasheet revision history. Check for End-of-Life notices or obsolescence warnings prior to final design approval. Ensure supply chain sources provide valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a fixed 8K depth and 18-bit width are required. Compare against the 72V265 series if higher density (16K) or lower voltage operation is needed. Verify that the 10ns speed grade meets system timing constraints. Consider pin compatibility with other devices in the 72255LA family for board layout flexibility.

Part Context

This part belongs to the IDT/Renesas SuperSync FIFO family, designed for high-performance buffering applications. It replaces older asynchronous FIFOs by providing synchronized data transfer capabilities. The 72255LA variant specifically targets 5V logic systems requiring reliable data integrity in noisy environments.

Replacement Considerations

The 72255LA15TFGI is a verified lead-free replacement for the standard 72255LA15TFI. Both parts share identical electrical specifications and pinouts. Verify RoHS3 compliance requirements before substituting.