7143LA55J

Overview

The Renesas Electronics Corporation 7143LA55J is a dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 32 kilobits, organized as 2K words by 8 bits. The device utilizes an asynchronous parallel interface with a maximum access time of 55 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package measuring 24.21mm x 24.21mm. The component supports surface mount installation and functions across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two distinct processors or systems.

Applications

• High-speed data buffering between asynchronous logic blocks
• Cache memory implementation in embedded processing systems
• Data storage for network communication interfaces

Procurement Notes

Verify the specific suffix designation against official documentation, as variations such as 'JI' may indicate extended industrial temperature ranges (-40°C to +85°C) compared to the standard commercial grade. Confirm RoHS compliance status, as older manufacturing runs often lack lead-free certification. Check for active discontinuation notices or last-time-buy orders before finalizing procurement plans.

Selection Notes

Select this component when a design requires independent read/write ports for concurrent data handling without bus contention. Ensure the system voltage aligns with the 4.5V to 5.5V operating window. Verify that the 68-PLCC footprint matches the PCB layout constraints and that the 55ns speed meets the timing requirements of the host processor.

Part Context

This part belongs to the IDT/Renesas 7143SA/LA series of high-speed CMOS dual-port SRAMs. These devices are designed for applications requiring fast, non-blocking data exchange. The LA variant typically denotes the plastic leadless chip carrier packaging option, distinguishing it from other form factors within the same electrical specification family.

Replacement Considerations

Official cross-references include the IDT7143LA55J. Verify pin compatibility and electrical specifications before substituting. Note that manufacturer transitions from Integrated Device Technology (IDT) to Renesas Electronics may affect marking and documentation availability.