71421LA55PF

Overview

The Renesas Electronics Corporation 71421LA55PF is a high-speed dual-port static random-access memory (SRAM) integrated circuit. It features a storage capacity of 16 kilobits organized as 2K x 8 bits. The device utilizes a parallel interface with an access time of 55 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 52-pin Thin Quad Flat Package (TQFP). The component is designed for asynchronous operation and includes internal data masking capabilities.

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two masters
• Asynchronous parallel interface for flexible system integration
• Internal data masking functionality for selective byte writes

Applications

• High-speed data buffering in communication systems
• Cache memory implementation in embedded controllers
• Data storage in industrial automation equipment

Procurement Notes

Verify the exact package variant, as suffixes may indicate different pin counts or thermal ratings. Confirm RoHS compliance status through official documentation, as older batches may not meet current environmental standards. Check for obsolescence notices from Renesas, as this series may be subject to discontinuation. Ensure ESD handling protocols are followed during procurement and storage.

Selection Notes

Select this component when dual-master access is required without external arbitration logic. Compare power consumption against single-port alternatives if only one master is active. Verify that the 55ns access speed meets the system timing requirements. Ensure the TQFP-52 footprint matches the PCB layout constraints and soldering capabilities.

Part Context

This part belongs to the 71421LA series of dual-port SRAMs from Renesas. These devices are engineered for applications requiring high bandwidth and low latency. The LA suffix typically denotes specific performance grades or package types within the broader product family. They serve as critical memory elements in systems needing concurrent read/write operations.

Replacement Considerations

Direct replacements must match the 16Kb capacity, 2Kx8 organization, and 55ns access time. Verify pin compatibility for the 52-pin TQFP package. Consider newer generation parts from Renesas or IDT with similar specifications if available. Ensure functional equivalence regarding data masking and control signals.