7133LA35J8

Overview

The 7133LA35J8 is a dual-port static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It provides a storage capacity of 32 kilobits, organized as 2K words by 16 bits. The device features asynchronous parallel interface with a maximum access time and write cycle time of 35 nanoseconds. It operates on a single 5V power supply within the range of 4.5V to 5.5V. The component is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package with J-leads, measuring 24.21mm by 24.21mm. It supports surface mount installation and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two separate processors or systems without bus contention.
• Asynchronous operation allowing flexible timing integration into various digital logic designs without requiring a system clock.
• CMOS technology construction providing high-speed performance with low power consumption characteristics typical of modern SRAM devices.

Applications

• High-performance data buffering in telecommunications equipment requiring rapid bidirectional data transfer.
• Cache memory implementation in embedded systems and industrial control units for fast instruction execution.
• Network switch and router internal memory for packet processing and traffic management.

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS compliance requirements as older batches may not meet current environmental standards. Check moisture sensitivity level handling procedures during assembly. Validate pin compatibility with existing PCB footprints before procurement. Review datasheet revisions for any parameter changes affecting system design.

Selection Notes

Select this component when dual-port functionality is required for concurrent read/write operations between two masters. Ensure voltage levels match the 4.5V to 5.5V operating range of the target system. Consider the 68-PLCC package constraints for board space and thermal management. Verify that the 35ns speed meets the timing requirements of the application. Evaluate alternative packages if higher density or different form factors are needed.

Part Context

This part belongs to the Renesas 7133 series of dual-port SRAMs, designed for applications needing independent port access. It shares architectural similarities with other members like the 7133SA35JI8 but differs in packaging and temperature rating. The LA suffix typically denotes specific commercial/industrial grade variations compared to SA counterparts. This series was widely used in legacy networking and industrial automation hardware before newer generations replaced it.

Replacement Considerations

No verified public substitute part numbers are available for direct replacement. Designers should consult official Renesas documentation for recommended obsolescence alternatives. Cross-reference with similar dual-port SRAM families from other manufacturers if necessary. Ensure mechanical and electrical compatibility when selecting third-party equivalents.