72205LB15PF

Overview

The Renesas Electronics Corporation 72205LB15PF is a synchronous First-In, First-Out (FIFO) memory device. It features an organization of 256 x 18 bits, providing a total capacity of 4.5K bits. The component operates with a maximum data rate of 66.7MHz and has a typical access time of 10ns. It supports unidirectional bus transfer and functions within a supply voltage range of 4.5V to 5.5V. The device is housed in a 64-TQFP package with dimensions of 10x10mm.

Feature Summary

• Synchronous FIFO architecture with clocked read and write controls for reliable data buffering
• High-speed operation supporting data rates up to 66.7MHz
• Unidirectional data bus interface simplifying system integration
• Programmable full/empty flag support for status monitoring

Applications

• Data buffering in high-speed digital signal processing systems
• Interface bridging between components operating at different clock speeds
• Temporary storage in communication protocol converters

Procurement Notes

This component is officially discontinued and no longer manufactured by Renesas Electronics. Verification of availability should focus on surplus or secondary market sources rather than direct procurement from the manufacturer. Buyers must confirm the authenticity and condition of existing stock carefully, as standard warranty and support channels are closed for this part number.

Selection Notes

Engineers requiring replacement solutions should evaluate current synchronous FIFO alternatives with compatible pinouts or logical equivalents. Considerations must include matching the 256 x 18 bit organization and 10ns access speed. Verify that any substitute supports the required 4.5V to 5.5V supply range and 64-TQFP packaging constraints to ensure seamless integration into existing designs.

Part Context

The 72205LB15PF belongs to the Renesas 72205 series of synchronous FIFOs. This family is designed for applications requiring efficient data flow management between asynchronous or differently clocked domains. The specific LB15 suffix indicates the 10ns speed grade and 5V logic compatibility, while the PF suffix denotes the 64-lead TQFP surface-mount package type.

Replacement Considerations

Official substitutes are not available due to discontinuation. Designers should consult Renesas application notes for recommended modern replacements or identify third-party compatible parts with identical electrical characteristics and pin configurations.