7140SA20J8

Overview

The 7140SA20J8 is an asynchronous dual-port static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics. 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 20 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 52-PLCC package measuring 19.13x19.13 mm. The component functions reliably across a commercial temperature range of 0°C to 70°C.

Feature Summary

• Supports simultaneous independent access from two separate ports for concurrent read/write operations
• Utilizes CMOS technology for low power consumption and high-speed data handling
• Provides flexible parallel interface compatibility for standard digital logic systems

Applications

• High-speed data buffering in communication equipment
• Cache memory implementation in embedded processing systems
• Data storage in industrial control applications requiring fast access times

Procurement Notes

Verify the specific suffix J8 against official Renesas documentation to confirm package type and moisture sensitivity level. Confirm RoHS compliance status as older variants may differ. Check for End-of-Life notices or Product Discontinuance Notifications prior to procurement planning. Ensure the supplier provides valid traceability documents matching the manufacturer's part identification.

Selection Notes

Select this component when a system requires independent dual-port access without arbitration overhead. Compare the 20 ns access speed against system timing requirements. Evaluate the 52-pin PLCC footprint against available PCB real estate. Consider the 4.5V to 5.5V operating range relative to the target system's power supply rails.

Part Context

This part belongs to the 7140SA series of dual-port SRAMs. It shares architectural similarities with other members like the 7140SA20J but differs in packaging and specific manufacturing revisions. The series is designed for applications needing non-blocking memory access between two distinct bus masters.

Replacement Considerations

Official substitutes include IDT7140SA20J8. Verify pinout compatibility and electrical specifications before substitution.