72245LB25JI8

Overview

The Renesas Electronics Corporation 72245LB25JI8 is a synchronous First-In, First-Out (FIFO) memory device belonging to the 72245LB25 series. It features an organization of 4K words by 18 bits, providing a total storage capacity suitable for high-speed data buffering applications. The component operates within a supply voltage range of 4.5 V to 5.5 V and is housed in a PLCC-68 package. This specific part number indicates a lead-free variant with industrial temperature rating capabilities.

Feature Summary

• Synchronous FIFO architecture with dedicated read and write clock inputs for independent domain operation
• 18-bit wide data bus supporting parallel data transfer between asynchronous system domains
• Programmable status flags including full, empty, and half-full indicators for flow control
• Compatible with standard TTL or CMOS logic levels for interface integration

Applications

• Data buffering in telecommunications equipment
• Interface bridging between processors operating at different clock speeds
• High-speed data acquisition systems requiring temporary storage
• Network interface cards and protocol converters

Procurement Notes

Verify RoHS compliance status as the source indicates 'N' for RoHS, which may conflict with environmental regulations in certain regions. Confirm moisture sensitivity level handling requirements during assembly. Check for end-of-life notices or obsolescence warnings from the manufacturer before finalizing design-in decisions. Ensure the PLCC-68 footprint matches the target PCB layout constraints.

Selection Notes

Select this component when an 18-bit data width is required for synchronous FIFO operations. Compare against other members of the 72245LB25 family if different access times or package types are needed. Consider the 4K depth requirement versus alternative capacities like 2K or 8K if space or cost is a constraint. Verify that the 5V logic compatibility aligns with the system's I/O standards.

Part Context

This device is part of the Renesas 7200 series of high-performance FIFO memories, originally developed under IDT branding. The 72245LB25 series specifically targets applications requiring moderate depth and wide data paths. The 'J' suffix typically denotes an industrial temperature range, while 'I8' often indicates lead-free packaging and specific tape/reel or tube options depending on the distributor listing.

Replacement Considerations

Check for direct pin-compatible replacements within the same 72245LB25 series, such as variants with different access times or package styles. Verify if newer generations from Renesas or other manufacturers offer equivalent functionality with improved environmental compliance. Cross-reference datasheets to ensure timing parameters and electrical characteristics match the original design requirements.