72255LA20TFI

Overview

The Renesas Electronics Corporation 72255LA20TFI is an obsolete 8K x 18 SuperSync FIFO memory device. It features a synchronous architecture with clocked read and write controls, eliminating the Frequency Select pin found in previous generations. The component operates within a supply voltage range of 4 V to 5.5 V and supports a maximum data rate of 50 MHz. It provides an access time of 12 ns and draws a maximum supply current of 80 mA. The device is housed in a 64-TQFP package measuring 10x10 mm.

Feature Summary

• Synchronous FIFO architecture with dedicated clocked read and write control signals
• Uni-directional data bus configuration for reliable data transfer
• Integrated design removes the Frequency Select pin for simplified interface

Applications

• High-speed data buffering in telecommunications equipment
• Data acquisition systems requiring precise timing synchronization
• Digital signal processing interfaces

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted to existing stock or secondary market sources. Verify authenticity and condition carefully when sourcing from third-party distributors. Ensure compatibility with system voltage requirements before procurement.

Selection Notes

Select this part for applications requiring synchronous FIFO buffering with 18-bit data width. Confirm that the 12 ns access time meets system timing constraints. Note that the absence of the Frequency Select pin distinguishes it from earlier variants in the series. Evaluate alternative components if new production volume is required due to obsolescence status.

Part Context

The 72255LA20TFI belongs to the SuperSync family of FIFO memories designed for high-performance digital systems. It represents an evolution of asynchronous designs by introducing synchronous control logic. The device maintains compatibility with standard 5V logic levels while offering improved timing predictability through clocked operations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements may require redesigning the interface logic to accommodate differences in control signals or data widths.