71421LA55JI8

Overview

The Renesas Electronics Corporation 71421LA55JI8 is a high-speed dual-port static random-access memory (SRAM) IC. It features a storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device supports asynchronous parallel interface operations with a maximum access time of 55 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts and is housed in a 52-lead Plastic Leadless Chip Carrier (PLCC) package. The component is rated for an industrial operating temperature range from -40°C to +85°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two masters
• Asynchronous operation for flexible system integration without clock synchronization
• High-speed data transfer capabilities suitable for real-time processing applications

Applications

• Buffering data in high-performance computing systems
• Cache memory implementation in embedded controllers
• Data storage in telecommunications equipment
• Industrial automation control units

Procurement Notes

Verify the specific suffix JI8 against official Renesas documentation to confirm lead-free status and moisture sensitivity level. Confirm end-of-life status and last-time-buy dates through authorized distributors. Ensure compatibility with existing PCB footprints and thermal management requirements for the PLCC-52 package.

Selection Notes

Select this component when dual-port functionality is required for concurrent master access. Compare against single-port alternatives if only one bus master is present. Consider the 55 ns access speed relative to system clock requirements. Verify that the 4.5V to 5.5V supply range matches the target platform's power rails.

Part Context

This part belongs to the 71421SA/LA series of dual-port SRAMs. It shares architectural similarities with other members of the family but differs in speed grade and commercial/industrial temperature ratings. The LA suffix typically denotes industrial temperature range variants compared to SA commercial grades.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Renesas technical support or authorized distributor databases for current cross-reference information.