72255LA20PFI8

Overview

The Renesas Electronics Corporation 72255LA20PFI8 is a synchronous FIFO memory device with an organization of 8K x 18 bits, providing a total capacity of 144K bits. It features a fast access time of 12 ns and supports a data rate of 50 MHz. The component operates within a supply voltage range of 4.5 V to 5.5 V and draws a maximum supply current of 80 mA. It is housed in a 64-TQFP package measuring 14x14 mm. The device supports First Word Fall Through (FWFT) and retransmit capabilities, functioning as a unidirectional buffer for high-speed data applications.

Feature Summary

• Supports First Word Fall Through (FWFT) functionality for reduced latency
• Includes retransmit capability for reliable data handling
• Operates as a unidirectional synchronous FIFO buffer

Applications

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

Procurement Notes

Verify the obsolete status of this part number before procurement planning. Confirm that the 64-TQFP package dimensions align with existing PCB footprints. Ensure compatibility with the required 4.5V to 5.5V power supply rails. Check for moisture sensitivity level constraints during storage and handling. Validate that FWFT and retransmit features meet specific design requirements.

Selection Notes

Select this component when a unidirectional synchronous FIFO with 18-bit width is required. The 12 ns access time suits applications needing 50 MHz operation speeds. Consider the 8K depth for moderate buffering needs. Verify that the TQFP-64 package is suitable for the assembly process. Ensure the design utilizes the FWFT feature if low-latency access is critical.

Part Context

This device belongs to the Renesas 72255 series of SuperSync FIFOs. It is designed for high-performance memory buffering tasks. The 18-bit data width distinguishes it from standard 8-bit or 16-bit variants. The synchronous architecture ensures precise timing control relative to the clock signal. It serves as a specialized solution for digital signal processing interfaces.

Replacement Considerations

No public confirmed substitute part numbers are available for this obsolete component.