71342LA45J8

Overview

The Renesas Electronics Corporation 71342LA45J8 is a high-speed dual-port static random-access memory (SRAM) device. It features a storage capacity of 32 kbit, organized as 4K words by 8 bits. The component supports asynchronous parallel interface operation with a maximum access time of 45 ns. It operates on a single 5V power supply within a voltage range of 4.5 V to 5.5 V. The device is housed in a 52-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount technology applications.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access from either port
• Integrated hardware semaphore logic block for automatic arbitration between ports
• Asynchronous operation allowing flexible timing control without clock synchronization

Applications

• High-speed data buffering in telecommunications systems
• Cache memory implementation in embedded processing architectures
• Real-time data acquisition and storage in industrial control equipment

Procurement Notes

Verify the specific suffix J8 confirms the 52-pin PLCC package configuration. Confirm RoHS compliance status as older variants may not meet current environmental standards. Check manufacturer discontinuation notices for availability constraints. Validate humidity sensitivity level requirements for your assembly process. Ensure pinout compatibility with existing PCB footprints before procurement.

Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration logic. The integrated semaphore feature simplifies design complexity compared to standard SRAMs. Verify that the 45 ns access speed meets system timing requirements. Ensure the 52-pin PLCC package fits the available board space and manufacturing capabilities.

Part Context

This part belongs to the Renesas 71342 series of dual-port SRAMs. The series provides true dual-ported memory solutions with built-in semaphore support. These devices are designed for applications requiring high-speed concurrent access from two independent masters. The LA suffix typically indicates extended temperature range or specific battery backup capabilities in related family members.

Replacement Considerations

IDT71342LA45J8 is a confirmed equivalent part number from the same product lineage.