7143SA25J

Overview

The Renesas 7143SA25J is a dual-port static random-access memory (SRAM) integrated circuit featuring an asynchronous parallel interface. It provides a storage capacity of 32 kilobits, organized as 2K words by 8 bits. The device supports a maximum access time of 25 nanoseconds and operates within a supply voltage range of 4.5V to 5.5V. It is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface mount installation. The component functions reliably across an ambient temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two separate processors or systems.
• Asynchronous operation allowing flexible timing control without reliance on a global clock signal.
• CMOS technology implementation ensuring low power consumption during active and standby states.

Applications

• High-speed data buffering in telecommunications equipment
• Real-time processing units in industrial automation controllers
• Cache memory subsystems in embedded network routers

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm pinout compatibility and electrical characteristics. Confirm RoHS compliance status as older variants may not meet current environmental directives. Validate moisture sensitivity level handling requirements prior to assembly to prevent package damage during soldering processes.

Selection Notes

Evaluate the 32Kb capacity against system memory requirements to ensure sufficient buffer space. Compare the 25ns access speed with processor cycle times to determine if performance meets latency constraints. Assess the PLCC package dimensions against available printed circuit board real estate and mounting infrastructure.

Part Context

This component belongs to the 7143SA series of high-performance dual-port SRAMs manufactured by Renesas Electronics. The series is engineered for applications requiring fast, independent read/write operations from multiple masters. It represents a legacy CMOS memory solution widely utilized in established industrial and communication hardware designs.

Replacement Considerations

Consult official datasheets for cross-reference part numbers such as IDT7143SA25J. Verify functional equivalence regarding pin configuration and voltage levels before substituting.