71421LA55J

Overview

The 71421LA55J is a dual-port static random-access memory integrated circuit manufactured by Renesas Electronics. It provides a storage capacity of 16 kbit organized as 2K x 8 bits. The device features asynchronous parallel interfaces for both ports with a maximum access time of 55 ns. It operates within a supply voltage range of 4.5 V to 5.5 V and supports surface-mount installation in a 52-pin PLCC package.

Feature Summary

• Dual-port architecture enabling independent simultaneous access to shared memory data
• Asynchronous operation allowing flexible timing control without external clock signals
• CMOS technology providing high-speed performance with low power consumption

Applications

• Data buffering in telecommunications systems
• Cache memory implementation in embedded processors
• FIFO buffer applications in industrial automation controllers

Procurement Notes

Verify component authenticity through authorized distributors due to discontinuation status. Confirm RoHS compliance requirements as the part may not meet current environmental standards. Validate package integrity upon receipt to ensure pin alignment matches the 52-PLCC specification before integration into assembly processes.

Selection Notes

Select this component when dual independent access to small memory blocks is required. Ensure system voltage aligns with the 4.5V to 5.5V operating range. Consider the 55ns access speed against system timing constraints. Verify that the PLCC footprint fits the target PCB layout design constraints.

Part Context

This part belongs to the 71421 series of dual-port SRAMs from Renesas. It shares architectural similarities with other members like the 71421SA55J but differs in package type and specific commercial variants. The LA suffix typically denotes a specific package configuration within the broader product family lineage.

Replacement Considerations

IDT71421LA55J serves as a direct functional equivalent under the Integrated Device Technology branding prior to acquisition.