72235LB15JI

Overview

The Renesas 72235LB15JI is a synchronous First-In, First-Out (FIFO) memory device featuring a storage capacity of 36K bits, organized as 2K words by 18 bits. It operates with a maximum data rate of 66.7MHz and an access time of 10ns. The component supports unidirectional bus operation and programmable status flags. It functions within a supply voltage range of 4.5V to 5.5V, drawing a maximum supply current of 60mA. The device is housed in a 68-PLCC package and is rated for industrial operating temperatures from -40°C to 85°C.

Feature Summary

• Synchronous FIFO architecture with clocked read and write controls for reliable data buffering
• Programmable full/empty flags to indicate memory status without external logic
• High-speed performance supporting data rates up to 66.7MHz
• Unidirectional data flow configuration optimized for specific buffering applications

Applications

• Data buffering between asynchronous system domains
• Temporary storage in high-speed digital signal processing chains
• Interface bridging in communication equipment requiring precise timing control

Procurement Notes

Verify the exact package type and RoHS compliance status before procurement, as legacy components may have variant manufacturing histories. Confirm end-of-life status and availability through authorized channels. Ensure design-in compatibility with existing PCB footprints for 68-pin PLCC packages. Check for any specific handling requirements related to moisture sensitivity level classification during assembly processes.

Selection Notes

Select this component when a synchronous FIFO with 18-bit word width and 2K depth is required. The 10ns access time suits high-frequency applications. Consider the 68-PLCC package constraints for board space. Verify that the unidirectional nature meets the system's data flow requirements compared to bidirectional alternatives.

Part Context

This part belongs to the Renesas 72235 series of synchronous FIFOs. It shares architectural similarities with other members like the 72235LB15PFGI8 but differs in packaging and potentially regulatory compliance. The series is designed for general-purpose data buffering in embedded systems and telecommunications infrastructure.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Renesas resources for qualified replacements or evaluate pin-compatible alternatives from other manufacturers if necessary.