72261LA15PF

Overview

The Renesas Electronics Corporation 72261LA15PF is a Super Sync FIFO with a storage capacity of 144K bits, organized as 16K words by 9 bits. It operates at a maximum clock frequency of 66.7MHz with an access time of 10ns. The device supports unidirectional data transfer and functions within a supply voltage range of 4.5V to 5.5V. It features programmable flags, relay capability, and First Word Fall Through (FWFT) support. The component is housed in a 64-TQFP package and operates within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Super Sync architecture enabling high-speed synchronous data buffering
• First Word Fall Through (FWFT) functionality for immediate data availability
• Programmable status flags indicating full, empty, and half-full conditions
• Relay capability allowing data preservation during clock stoppages

Applications

• High-speed data buffering in telecommunications systems
• Interface bridging between asynchronous logic domains
• Data acquisition systems requiring precise timing control
• Network equipment packet buffering applications

Procurement Notes

Verify the specific suffix against official Renesas documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status as historical variants may differ. Check current product lifecycle status, as this component may be subject to discontinuation or obsolescence notices. Ensure the selected variant matches the required operating temperature range and voltage specifications for the target application environment.

Selection Notes

Select this component when a 16K x 9 depth is required for synchronous FIFO operations. Consider the 66.7MHz speed limit and 10ns access time for system timing budgets. Evaluate the need for FWFT and relay capabilities versus simpler FIFO alternatives. Verify that the 4.5V to 5.5V supply voltage aligns with the system power rails and that the TQFP-64 package fits the PCB layout constraints.

Part Context

This part belongs to the IDT/Renesas Super Sync FIFO family, designed for high-performance data buffering. These devices are characterized by their ability to handle burst data transfers efficiently. The 72261 series specifically targets applications requiring moderate depth with fast access times. The transition from IDT to Renesas maintains the functional compatibility of these established memory interface solutions.

Replacement Considerations

Consult official Renesas cross-reference guides for verified substitutes. Potential replacements include other members of the 72261 series with differing depths or speeds. Verify pinout compatibility and electrical characteristics before substitution.