72235LB25TF8

Overview

The Renesas 72235LB25TF8 is a synchronous FIFO memory device with a storage capacity of 36K bits, organized as 2K words by 18 bits. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum data rate of 40 MHz with an access time of 15 ns. The component features unidirectional bus directionality and programmable status flags. It is housed in a 64-TQFP (10x10) surface-mount package and is designed for industrial temperature ranges.

Feature Summary

• Synchronous first-in-first-out memory architecture supporting simultaneous read and write operations under a common clock.
• Programmable status flags enable precise monitoring of buffer levels to prevent overflow or underflow conditions.
• Unidirectional data flow design simplifies interface integration for specific buffering applications.

Applications

• Data buffering between asynchronous system domains
• Rate matching in high-speed digital interfaces
• Temporary data storage in signal processing chains

Procurement Notes

Verify the exact suffix configuration against current Renesas documentation, as packaging and lead-free status may vary. Confirm availability through authorized distributors, noting that specific variants may have limited stock or end-of-life implications. Ensure compatibility with existing board designs regarding pinout and thermal requirements before procurement.

Selection Notes

Select this component when a 2K x 18 synchronous FIFO is required with 15 ns access speed. Consider the 64-TQFP package for surface-mount assembly constraints. Evaluate power consumption limits against the 60 mA maximum specification. Verify that the 4.5 V to 5.5 V operating voltage aligns with the system's power rail infrastructure.

Part Context

This part belongs to the Renesas 72235 series of synchronous FIFO memories. The series offers various speed grades and organizational configurations to suit different bandwidth requirements. The 72235LB25 variant specifically targets applications needing moderate speed with wide data paths, providing a balance between performance and interface simplicity.

Replacement Considerations

Check for direct pin-compatible replacements within the same family, such as other speed grades like 72235LB15. Verify functional equivalence regarding flag logic and timing characteristics. Consult official substitution guides for any changes in package dimensions or electrical specifications.