7134LA70JI

Overview

The Renesas Electronics Corporation 7134LA70JI is a 32Kbit (4K x 8) dual-port asynchronous SRAM IC. It features parallel interface operation with a 70 ns access time and write cycle time. The device operates on a single 5V power supply ranging from 4.5V to 5.5V. It is housed in a 52-PLCC package with J-leads, measuring 19.13x19.13 mm. The component supports an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• True dual-ported memory cells allow simultaneous independent access to the same memory location from either port without hardware arbitration.
• Fully asynchronous operation enables flexible timing integration into systems that cannot tolerate wait states or can externally manage contention.
• Automatic power-down feature controlled by chip enable signals allows on-chip circuitry to enter a very low standby power mode.

Applications

• Systems requiring simultaneous data access from two independent processors or controllers
• High-speed buffer memory applications where external arbitration logic is not utilized
• Industrial control systems operating within extended temperature environments

Procurement Notes

Verify component authenticity through authorized channels as this part is discontinued. Confirm package integrity for the 52-PLCC form factor. Check for RoHS compliance status as indicated in official documentation. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly.

Selection Notes

Select this component when true dual-port functionality is required without internal arbitration overhead. Consider the 70 ns speed grade for moderate performance needs. Verify compatibility with 5V logic levels and industrial temperature specifications. Evaluate alternative packages if surface mount constraints differ from PLCC availability.

Part Context

The 7134LA series represents high-speed CMOS dual-port static RAM technology. This specific model belongs to the 70 ns speed grade family. It is designed for applications needing concurrent read/write operations from separate ports. The LA suffix indicates battery backup capability for data retention.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material due to the product's discontinuation status. Consult manufacturer obsolescence notices for potential cross-references.