7140SA25JI8

Overview

The Renesas Electronics Corporation 7140SA25JI8 is an asynchronous dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 8 kilobits, organized as 1K words by 8 bits. The device features a parallel interface with a maximum access time of 25 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts and supports surface-mount installation in a 52-pin Plastic Leadless Chip Carrier (PLCC) package measuring 19.13mm by 19.13mm. The component is rated for commercial operating temperatures between 0°C and 70°C.

Feature Summary

• Supports simultaneous independent read and write operations at two distinct ports without bus contention.
• Provides fast asynchronous data transfer capabilities suitable for high-speed processing applications.
• Utilizes CMOS technology to ensure reliable performance within standard logic voltage levels.

Applications

• Data buffering in telecommunications equipment
• Cache memory implementation in industrial control systems
• FIFO buffer configurations in embedded processing architectures

Procurement Notes

Verify the exact suffix designation against official manufacturer documentation, as variations such as J8 or JI8 may indicate specific packaging or environmental compliance differences. Confirm current production status, as this series is frequently subject to discontinuation notices. Ensure compatibility with existing board layouts regarding the 52-PLCC footprint and verify that the 4.5V to 5.5V power supply requirements align with the target system design before procurement.

Selection Notes

Select this component when a system requires independent dual-port memory access for concurrent data handling. The 25ns speed class is appropriate for moderate-frequency microprocessors. Consider the PLCC package constraints if space is limited. Evaluate alternative parts from the same family if different access speeds or voltage ranges are required for the specific application environment.

Part Context

This part belongs to the IDT/Renesas 7140SA series of dual-port SRAMs. These devices are designed for applications requiring high-speed data exchange between two processors or systems. The series typically offers various speed grades and package options to accommodate different design needs while maintaining consistent functional architecture across the product line.

Replacement Considerations

Check for direct substitutes within the 7140SA family with matching pinouts and electrical characteristics. Verify if newer revisions have replaced the original manufacturing source. Ensure any replacement maintains the dual-port functionality and 52-PLCC form factor to avoid redesigning the host circuit board.