7143LA90J8

Overview

The 7143LA90J8 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 operation with a maximum access time of 90 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 68-pin PLCC package.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two distinct processors or systems
• Asynchronous parallel interface for straightforward integration into existing digital logic designs
• CMOS technology ensuring low power consumption relative to older bipolar SRAM alternatives

Applications

• High-speed data buffering between microprocessors and peripheral devices
• Cache memory implementation in industrial control systems
• Real-time data logging in telecommunications equipment

Procurement Notes

Verify component authenticity through authorized distributors due to potential availability of refurbished units. Confirm RoHS compliance status as legacy variants may not meet current environmental standards. Check for specific suffix variations that indicate packaging type or temperature grade differences before finalizing orders.

Selection Notes

Select this component when dual-port functionality is required for concurrent read/write operations without bus contention. Ensure the 90ns speed meets system timing requirements. Verify that the 68-PLCC package fits the available PCB footprint and that the 4.5V to 5.5V supply range aligns with the target application's power rails.

Part Context

This part belongs to the 7143SA/LA series of high-performance dual-port SRAMs. These devices are designed for applications requiring fast, independent access from multiple masters. The 'LA' designation typically indicates commercial temperature range specifications, distinguishing it from extended temperature variants.

Replacement Considerations

Direct replacements include the 7143SA90J and 7143SA90JI8. Verify pin compatibility and electrical characteristics match exactly. Note that some substitutes may differ in packaging style or moisture sensitivity level ratings.