72245LB15JGI

Overview

The Renesas Electronics Corporation 72245LB15JGI is a synchronous FIFO memory device with a 4K x 18 organization, providing 72 Kbits of storage capacity. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 66.7 MHz. The component features a 10 ns access time and utilizes a bidirectional data bus architecture. It is housed in a 64-pin TQFP package suitable for surface mount applications.

Feature Summary

• Supports dual-clock operation with asynchronous read and write clocks or single-clock mode
• Includes programmable empty, full, almost-empty, and almost-full status flags
• Features output enable control to place the data bus in a high-impedance state

Applications

• Data buffering in optical disk controllers
• Local Area Network (LAN) interface buffering
• Interprocessor communication systems

Procurement Notes

Verify current availability as this component may be discontinued or subject to limited supply. Confirm RoHS compliance status and moisture sensitivity level requirements before integration. Check for valid datasheets and ensure the specific suffix matches the required package type. Validate end-of-life status through official manufacturer channels prior to final design approval.

Selection Notes

Select this part when a 4K x 18 synchronous FIFO with bidirectional data transfer is required. Ensure the system operates within the specified 4.5 V to 5.5 V voltage range. Verify that the 64-pin TQFP package fits the PCB layout constraints. Consider the 10 ns access time against the system clock speed to meet timing requirements.

Part Context

This device belongs to the 72245 series of synchronous FIFO memories manufactured by Renesas Electronics. The series provides reliable data buffering solutions for high-speed digital interfaces. The LB variant typically denotes specific performance characteristics within the family. This component serves as a standard solution for temporary data storage in complex electronic systems.

Replacement Considerations

The 72V245L15TFGI is a verified alternative offering similar functionality but operating at 3.3 V. Designers must account for voltage level differences and potential I/O compatibility issues when substituting components. Verify pinout compatibility and electrical specifications before implementation.